ELECTRICAL TABLE OF CONTENTS - About Us |...

Electrical Table of Contents - 203

ELECTRICAL TABLE OF CONTENTS Electrical

Table of Contents

General Information......................................205Reading Electrical Schematics...................205Theory Of Operation Information................206Diagnostic Information................................206Wire Color Abbreviation Chart....................206Common Circuit Tests................................207Conductors For 12 Volt Circuits .................207

Specifications ...............................................208Electrical.....................................................208

Component Location....................................209Component Location - L100/L110/L120 .....209Component Location - L130 .......................210

System Schematics ......................................211Schematic and Wiring Harness Legend - L100/L110/L120 .........................................211Main Wiring Schematic L100/L110/L120....212W1 and W2 Hiring Harnesses - L100/L110/L120 .........................................214W1 Front Main Wire Harness Color Codes - L100/L110/L120 .........................................216W2 Rear Main Wire Harness Color Codes - L100/L110/L120 .........................................216Schematic And Wiring Harness Legend - L130 ...........................................................217Main Wiring Schematic L130......................218W1 and W2 Wiring Harness 130 ................220W1 Front Main Wire Harness Color Codes - L130 ....................................222W2 Rear Main Wire Harness Color Codes - L130 ....................................222W3 and W4 Jumper Wiring Harnesses - All ...............................................................223W5 Headlight Wiring Harness - All .............223L110W6 Engine Wiring Harness - L100 .....224W6 Engine Wiring Harness, Stator and N1 Voltage Regulator/Rectifier - L110/L130 ....224W6 Engine Wiring Harness - L120/L130 ....225G2 Stator and N1 Voltage Regulator/Rectifier - L100 ..........................225G2 Stator and N1 Voltage Regulator/Rectifier - L120/L130 .................225Y1 PTO Clutch - L130 ................................226Y2 Fuel Shutoff Solenoid............................226N1 Voltage Regulator/Rectifier...................226

Diagnostics and Operation ......................... 227Power Circuit Operation - L100/L110/L120 ........................................ 227Power Circuit Electrical Schematic - L100/L110/L120......................................... 228Power Circuit Diagnosis - L100/L110/L120......................................... 229Power Circuit Operation - L130 ................ 232Power Circuit Electrical Schematic - L130 ....................... 233Power Circuit Diagnosis - L130 ................. 234Cranking Circuit Operation - L100/L110/L120/L130................................ 237Cranking Circuit Electrical Schematic - L100/L110/L120/L130................................ 238Cranking Circuit Diagnosis - L100/L110/L120/L130................................ 239Ignition and Shutoff Circuit Operation - L100/L110/L120/L130................................ 240Ignition and Shutoff Circuit Electrical Schematic - L100/L110/L120/L130............ 242Ignition and Shutoff Circuit Diagnosis - L100/L110/L120/L130................................ 243Charging Circuit Operation - L100/L110/L120/L130................................ 248Charging Circuit Electrical Schematic - L100/L110/L120/L130................................ 249Charging Circuit Diagnosis - L100/L110/L120/L130................................ 250PTO Clutch Circuit Operation - L130 ......... 251PTO Clutch Circuit Electrical Schematic - L130........................................................... 252PTO Clutch Circuit Diagnosis - L130 ......... 253PTO with RIO Circuit Operation - L100/L110/L120......................................... 254PTO with RIO Circuit Schematic - L100/L110/L120......................................... 255PTO with RIO Circuit Diagnosis - L100/L110/L120......................................... 256PTO with RIO Circuit Operation - L130 ..... 259PTO with RIO Circuit Schematic - L130 .... 260PTO with RIO Circuit Diagnosis - L130 ..... 261Headlight Circuit Operation - L100/L110/L120/L130................................ 263Headlight Circuit Electrical Schematic - L100/L110/L120/L130................................ 264Headlight Circuit Diagnosis - L100/L110/L120/L130................................ 265

Electrical Table of Contents - 204

ELECTRICAL TABLE OF CONTENTS

Hour Meter/Service Light Circuit Operation - L100/L110/L120/L130 ................................266Hour Meter/Service Light Circuit Schematic - L100/L110/L120/L130 ................................267Hour Meter/Service Light Circuit Diagnosis - L100/L110/L120/L130 ................................267

Tests and Adjustments ................................268Ground Circuit Tests ..................................268Battery Voltage and Specific Gravity Tests.................................268Battery - Charge .........................................269Battery - Load Test.....................................270Starting Solenoid Test ................................270Starting Motor Amperage Draw - Loaded ..........................271Starting Motor Amperage Draw - No-Load ........................271Flywheel Magnet Test ................................272Regulated Voltage Test..............................272Alternator Output Test ................................272Voltage Regulator/Rectifier Test - L110/L130 ..................................................273Regulated Amperage Test .........................273Relay Test ..................................................274Key Switch Test..........................................274PTO/Brake Switch Test - L100/L110/L120 .........................................275PTO Switch Test - L130 ............................275RIO Switch Test .........................................276RIS Switch Test .........................................276Seat Switch Test ........................................277Diode Test - Ignition Coil ............................277Spark Test ..................................................278Fuel Shutoff Solenoid Test .........................278Electric PTO Clutch Test ............................279Armature Air Gap Adjustment ....................279

Electrical General Information - 205

ELECTRICAL GENERAL INFORMATION

General Information

Reading Electrical Schematics

The schematic is made up of individual circuits laid out in a

sequence of related functions. It is formatted with all power

wires (A) across the top and all ground wires (B) across the

bottom. Current flow is generally from top to bottom

through each circuit and component. All components are

shown in the OFF position. The diagram does not list

connector (C) information unless needed to avoid

confusion. If the connector is shown, the number next to it

is the terminal pin location (D) in the connector.

Each component is shown by a symbol (E), its name (F),

and an identification code (G). The identification code

contains a device identifying letter (H) and number (I).

The identifying letter is always the same for a specific

component, but the identifying numbers are numbered

consecutively from upper left to lower right. The terminal

designation (J) is placed directly outside the symbol next to

the connecting wire path. Switch positions (K) are also

placed directly outside the symbol. The solid line (L) shows

the position the switch is currently in and dash lines (M)

represent other switch positions.

Each circuit is identified at the bottom of the drawing by a

section number (N) and section name (O).

The circuit number (P) and wire color (Q) of the wires are

shown directly next to the wire path.

The same component name and identification code are

used consistently on all diagrams in this section.

Components can be easily cross-referenced.

LinkFusibleF1

M1Starting Motor

B S

M

G1

X1

W1ShieldedGround

Battery

StartK1

Relay

S1 KeySwitch

Off

Run

Start

210

Red

721

Red

Blk

215Org

F3

Fuse15 Amp

F2

Fuse15 Amp

Red

414Yel/

800 Pink

E2SparkPlug

T2IgnitionCoil

T1IgnitionCoil

X4

IgnitionK2

SeatS2

Switch

F

Relay

6

X3710

D

X3

H

805 Pnk/Blk

X3

X2

Pur/

Red

1

X2

X3

E

Seat

Off

Seat

On

Yel/Wht

Yel/Wht

Blk/YelWht

X3

C

X5Yel/Wht

WhtB

Wht

105 Blk

Blk

SE1-Power and Starting Circuit SE2-Ignition and Interlock Circuit SE3-PTO and Interlock

Pur

W2Engine

E1SparkPlug

Yel/Wht

HarnessWiring

S1

Wht

M

87

85

30

86

L K

A

D

J

P

Q

NO C

I

H

B

FE

G



Theory Of Operation Information

The theory of operation stories divide the electrical system

into individual circuits by function. Each circuit is isolated

from the main wiring schematic and only shows the

components that are used in it. The story contains

information on function, operating conditions, and theory of

operation. The circuit schematics are drawn with the

components in the operating position, with the power, or

battery positive, into them across the top and the ground, or

battery negative, across the bottom.

Diagnostic Information

The diagnostic procedures is used to test the complete

circuit regardless of the problem or complaint. Select a

symptom or system from the quick check or

troubleshooting chart and follow the test procedures under

that heading.

The diagnostic procedure lists:

• Test conditions

• Test sequence

• Test location

• Normal reading

• Check or test to perform if reading is not normal

When performing the test or check, be sure to set your

machine up to the TEST POINT/PROCEDURES listed in

the first column and follow the sequence carefully. The

middle RESULTS column gives the reading or condition

that should be obtained in BOLD print. If the results of the

test or check are not normal, perform the test, check, or

adjustment listed below the BOLD print. The system

diagram that accompanies each test procedure is drawn to

resemble machine components. The leader line points to

the exact point the test is to be made.

Wire Color Abbreviation Chart

Blk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black

Blu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Blue

Brn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brown

Grn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Green

Gry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Gray

Org. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Orange

Pnk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pink

Pur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Purple

Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Red

Tan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tan

Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .White

Yel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yellow

Blk/Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black/White

Blu/Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Blue/White

Brn/Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brown/White

Brn/Yel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brown/Yellow

Dk Blu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dark Blue

Dk Brn/Lt Grn . . . . . . . . . . . . . . Dark Brown/Light Green

Dk Brn/Red . . . . . . . . . . . . . . . . . . . . . . Dark Brown/Red

Dk Brn/Yel . . . . . . . . . . . . . . . . . . . . . .Dark Brown/Yellow

Dk Grn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dark Green

Lt Blue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Light Blue

Lt Grn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Light Green

Org/Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . Orange/White

Pnk/Blk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pink/Black

Pur/Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Purple/White

Red/Blk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Red/Black

Red/Wht. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Red/White

Wht/Blk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . White/Black

Wht/Red. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . White/Red

Yel/Blk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yellow/Black

Yel/Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yellow/Red

Yel/Wht . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Yellow/White



Common Circuit Tests

Shorted Circuit:

MIF

A shorted circuit may result in the wrong component

operating (i.e. improper wire-to-wire contact). To test for a

shorted or improperly wired circuit:

1. Turn component switch ON.

2. Start at the controlling switch of the component that

should not be operating.

3. Follow the circuit and disconnect wires at connectors

until component stops operating.

4. Shorted or improper connections will be the last two

wires disconnected.

High Resistance or Open Circuit:

MIF

High resistance or open circuits usually result in slow, dim

or no component operation (i.e. poor, corroded, or

disconnected connections). Voltage at the component will

be low when the component is in operation. To test for high

resistance and open circuits:

1. Check all terminals and grounds of the circuit for

corrosion.

2. If terminals are not corroded or loose, the problem is in

the component or wiring.

Grounded Circuit:

MIF

Grounded circuits usually result in no component operation

or a blown fuse.

Conductors For 12 Volt Circuits

Stranded Conductors For 12 Volt Circuits

Sae Wire Size (Gauge) 20 18 16 14 12 10

Metric Wire Size (mm) 0.5 0.8 1.0 2.0 3.0 5.0

Typical Stranding 7 X 28 16 X 30 19 X 29 19 X 27 19 X 25 19 X 23

Minimum Conductor Area In

Circular Mils

1072 1537 2336 3702 5833 9343

Electrical Specifications - 208

ELECTRICAL SPECIFICATIONS

Specifications

Electrical

Battery:

Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 VDC

CCA Amps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 amps

Ignition (Briggs & Stratton):

Spark Plug (Briggs & Stratton) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion RC12YC

Spark Plug (Kohler) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion RN14YC

Spark Plug Gap (All). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.76 mm (0.030 in.)

Spark Plug Torque (All) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 N•m (240 lb-in.)

Air gap (Briggs & Stratton) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 - 0.3 mm (0.008 - 0.012 in.)

Air gap (Kohler) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4 - 0.6 mm (0.015 - 0.023 in.)

Starting Motor:

Type - L100/L110/L120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inertia Drive

Type - L130 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Solenoid Shift

Starting motor amp draw - L100/L120 (on machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 - 100 amps

Starting motor amp draw - L110/L130 (on machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 amp

Starting motor no-load amp draw L100/L120 (free running) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 amps (maximum)

Starting motor no-load amp draw L110/L130 (free running) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 amps (maximum)

Stator - L100:

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 amp

Regulated Amperage (Minimum) at Fast Idle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 9 amps

Unregulated Voltage (Minimum) at Fast idle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 volts AC

Stator - L110/L130:

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Amp

Regulated Amperage (Minimum) at Fast Idle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 15 amps


Stator - L120:

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 amp

Regulated Amperage (Minimum) at Fast Idle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 16 amps


Electric PTO Clutch - L130:

Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4 - 2.7 ohms

Current Draw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 amps

Lighting:

Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GE 1156 or equivalent

Electrical Component Location - 209

ELECTRICAL COMPONENT LOCATION

Component Location

Component Location - L100/L110/L120

MIF

A - S1 Key Switch

B - P1 Hourmeter/Service Light

C - S2 PTO Switch

D - X3 ACC Power Port

E - S4 RIS Switch

F - W1 Shielded Ground

G - N1 Voltage Regulator/Rectifier

H - T1 and T2 (L120 only) Magneto Ignition

I - G2 Stator

J - Y1 Fuel Shutoff Solenoid

K - X4 Headlight Connector

L - M1 Starting Motor

M - K1 Starting Motor Solenoid

N - K2 RIO Latch Relay

O - S3 Brake Switch

P - G1 Battery

Q - S6 RIO Switch

R - S5 Seat Switch

A

B

CD

F

G

I

J

KL

M

N

O

P

Q

R

E

H

Electrical Component Location - 210

ELECTRICAL COMPONENT LOCATION

Component Location - L130

A - S1 Key Switch

B - P1 Hourmeter/Service Light

C - S2 PTO Switch

D - X3 ACC Power Port

E - S4 RIS Switch

F - W1 Shielded Ground

G - N1 Voltage Regulator/Rectifier

H - T1 and T2 Magneto Ignition

I - G2 Stator

J - Y2 Fuel Shutoff Solenoid

K - X4 Headlight Connector

L - M1 Starting Motor

M - K1 Starting Motor Solenoid

N - Y1 PTO Clutch

O - K1 RIO Latch Relay

P - S3 Brake Switch

Q - G1 Battery

R - S6 RIO Switch

S - S5 Seat Switch

A B

CD

S

F

G

H

J

KL

N

P

Q

R

M

E

I

O

Electrical System Schematics - 211

ELECTRICAL SYSTEM SCHEMATICS

System Schematics

Schematic and Wiring Harness Legend - L100/L110/L120

E1 - RH Headlight (SE2, W1)

E2 - LH Headlight (SE2, W1)

E3 - Spark Plug (SE4, W6)

E4 - Spark Plug (SE4, W6)(L120 only)

F1 - Fuse 20 Amp (SE1, W1)

G1 - Battery (SE1, W1)

G2 - Alternator (SE4, W6)

K1 - Starting Motor Solenoid (SE1, W1)

K2 - RIO Latch Relay (SE3, W1)

M1 - Starting Motor (SE1, W1)

N1 - Voltage Regulator/Rectifier (SE4, W6)

P1 - Hourmeter/Service Light (SE1, W1)

S1 - Key Switch (SE1, W1)

S2 - PTO Switch (SE3, W1)

S3 - Brake Switch (SE3, W1)

S4 - RIS Switch (SE3, W1)

S5 - Seat Switch (SE3, W1)

S6 - RIO Switch (SE3, W1)

T1 -Magneto Ignition (SE4, W6)

T2 - Magneto Ignition (SE4, W6)(L120 only)

V1 - Diode (SE4, W6)(B&S engines only)

V2 - Diode (SE4, W6)(L120 only)

W1 - Shielded Ground (SE1, W1)

Y1 - Fuel Shutoff Solenoid (SE4, W6)

Connectors:

X1 - W1 Front Main Wiring Harness to W3 Positive Jumper

Wiring Harness (SE1, W1)

X2 - W1 Front Main Wiring Harness to W4 Negative

Jumper Wiring Harness (SE1, W1)

X3 - W1 Front Main Wiring Harness to ACC Power port

(SE1, W1)

X4 - W1 Front Main Wiring Harness to W5 Headlight Wiring

Harness (SE2, W1)

X5 - W1 Front Main Wiring Harness to W2 Rear Main


X6 - W1 Front Main Wiring Harness to W6 Engine Wiring

Harness (SE3, W1)

X7 - W6 Engine Wiring Harness to Y1 Fuel Shutoff

Solenoid (SE4, W6)

X8 - W6 Engine Wiring Harness to T1 and T2 Magneto

Ignition (SE4, W6)

X9 - W6 Engine Wiring Harness to N1 Voltage Regulator/

Rectifier (SE4, W6)(B&S engines only)

WIRING HARNESSES:

W1 - Front Main Wiring Harness

W2 - Rear Main Wiring Harness

W3 - Positive Jumper Wiring Harness

W4 - Negative Jumper Wiring Harness

W5 - Headlight Wiring Harness

W6 - Engine Wiring Harness



Main Wiring Schematic L100/L110/L120

SE 1 - Starting SE 2 - Headlights

110Blk

105

S1 Key

G1 Battery

W1

GroundShielded

StartingK1

StartingM

Motor

M1

200Red

941Wht

700960

200Red

710

Pur100

140

Switch

125 Blk

105Blk

Blk

MotorSolenoid

Blk

Yel/

Blk

(0) Off(1) Run w/ Lights(2) Run w/o Lights(3) Start

0, 1 0

2 1 03GSA2 A1

L B M

Pur

Splice #2

220Red

Blk

115 Blk

F1

X1

Fuse

201Red

Red

/Blk

100

S3 BrakeSwitch

705 Pur/Wht

(Off)

(On)

943 Wht

945 Wht/Blk942 Wht

949 Wht/Blk

705 Pur/Wht

120

Blk

960Yel

X4

X4

E1 and E2Headlight

W5 Headlight

Wiring Harness

Wht

410 Yel20 A401

115 Blk

110 Blk

/Wht

451

940 Wht941 Wht

943Wht

942Wht

Yel/Wht

405 Yel

Yel

X3 ACCPower Port

P1Hour Meter

140Blk /Service Light

401

710 Pur

X2

Splice#1

Blk

W4 Negative JumperWiring Harness

W3 PositiveJumper WiringHarness

Yel

700 Pur

S2 PTOSwitch

(Off)

(On)

451 Yel/Wht

220 Red/Blk



SE 3 - Magneto Kill & Start Interlock SE 4 - Engine Ignition/ Charging

111

S5 SeatSwitch

130

951 Blk/Wht

945 Wht/Blk

Blk

K2 RIOLatchRelay

957 Wht410Yel

951 Blk/Wht952 Wht/Blk

451 Yel/Wht

402 Yel

940 Wht

220 Red/Blk

Y1 Fuel

X6W6 Engine WiringHarness - L100

X7

Red

Wht

Grn

Red

Pur

SparkPlug

E3T1MagnetoIgnition

Wht

Diode

V1

X8

ShutoffSolenoid

953

X5

949Wht/Blk

X5

Blk/Wht

X5

957 Wht

S6 RIOSwitch

Forward/

Reverse

Neutral

W2 Rear Main Wiring Harness

954

S4 RISSwitch

402 Yel

Wht

954Wht

X5110 Blk

G2Stator

G

Yel

U

X9

Blk

Red

X9

Y1 Fuel

X6W6 Engine WiringHarness - L110

X7

Red

Wht

Grn

Red

SparkPlug

E3

T1MagnetoIgnition

Wht

X8

ShutoffSolenoid

U

Red

G2Stator

G

Wht Wht

Operator Off

Operator On

Blk

940 Wht

949 Wht/Blk

410 Yel

451 Yel/Wht

220 Red/Blk

V2

Diode

SparkPlug

E4

T2MagnetoIgnition

W6 Engine Wiring Harness - L120



W1 and W2 Hiring Harnesses - L100/L110/L120

201

20 AFuseF1

201

200220

952953

953

402410

954957

949951

Splice #1

941942

943

940

X4 to W5

120

960

Headlights

110

957

951945

402

940

220451

X5 to W2 RearMain Wiring Harness

X6 to W6Engine Wiring Harness

K2 RIOLatch Relay

X1 to W3 PositiveJumper Wiring Harness

957110130

S6RIO Switch

945

957

951 110

X5 to W1 FrontMain Wiring Harness

111

S5Seat Switch

130111 945

951W2 Rear Main Wiring Harness

Wiring Harness



SwitchS2 PTO

P1 Hour Meter

SwitchS3 Brake

705710

945

S1

Key

Switch

200700

941

960

401

451

100140

405

405

140

/Service Light

942

105

710

K1 Starting Motor

K1 Starting Motor

125

120

110

105

125

115

100

X3 to

115

401410

ACC Power Port

S4

952

RISSwitch

954

Splice #2

W1 Front Main Wiring Harness

X2 to W4 NegativeJumper Wiring Harness

Solenoid Positive

Solenoid Negative

705700

949943



W1 Front Main Wire Harness Color Codes - L100/L110/L120

W2 Rear Main Wire Harness Color Codes - L100/L110/L120

Size/No./Color Wire Connection Points

0.5 100 Blk S1, X3

0.5 105 Blk K1, Splice #2

0.8 110 Blk Splice #2, X5

0.8 115 Blk K1, X3



0.5 140 Blk S1, P1

1.0 200 Red F1, S1

1.0 201 Red X1, F1

1.0 220 Red/Blk F1, X6

0.8 401 Yel S1, X3

0.5 402 Yel K2, X6

0.5 405 Yel S1, P1

0.8 410 Yel X3, K2

0.5 451 Yel/Wht S1, X6

0.5 700 Pur S1, S2

0.5 705 Pur/Wht S2, S3

0.5 710 Pur S3, K1

0.5 940 Wht Splice #1, X6

0.5 941 Wht Splice #1, S1



0.5 945 Wht/Blk S3, X5

0.5 949 Wht/Blk K2, S2

0.5 951 Blk/Wht K2, X5

0.5 952 Wht/Blk K2, S4

0.5 953 Blk/Wht K2, K2

0.5 954 Wht S4, K2

0.5 957 Wht K2, X5

0.5 960 Yel S1, X4


0.5 110 Blk S6, X5

0.5 111 Blk S5, S5

0.5 130 Blk S5, S6

0.5 945 Wht/Blk X5, S5

0.5 951 Blk/Wht S5, X5

0.5 957 Wht S6, X5



Schematic And Wiring Harness Legend - L130

E1 - RH Headlight (SE2, W1)

E2 - LH Headlight (SE2, W1)



F1 - Fuse 20 Amp (SE1, W1)

G1 - Battery (SE1, W1)

G2 - Alternator (SE4, W6)

K1 - Starting Motor Solenoid (SE1, W1)

K2 - RIO Latch Relay (SE3, W1)

M1 - Starting Motor (SE1, W1)

N1 - Voltage Regulator/Rectifier (SE4, W6)

P1 - Hourmeter/Service Light (SE1, W1)

S1 - Key Switch (SE1, W1)

S2 - PTO Switch (SE3, W1)

S3 - Brake Switch (SE3, W1)

S4 - RIS Switch (SE3, W1)

S5 - Seat Switch (SE3, W1)

S6 - RIO Switch (SE3, W1)

T1 - Magneto Ignition (SE4, W6)

T2 - Magneto Ignition (SE4, W6)

V1 - Diode (SE4, W6)

V2 - Diode (SE4, W6)

W1 - Shielded Ground (SE1, W1)

Y1 - PTO Clutch (SE3, W2)

Y2 - Fuel Shutoff Solenoid (SE4, W6)

Connectors:

X1 - W1 Front Main Wiring Harness to W3 Positive Jumper


X2 - W1 Front Main Wiring Harness to W4 Negative

Jumper Wiring Harness (SE1, W1)

X3 - W1 Front Main Wiring Harness to ACC Power port

(SE1, W1)

X4 - W1 Front Main Wiring Harness to W5 Headlight Wiring

Harness (SE2, W1)

X5 - W1 Front Main Wiring Harness to W2 Rear Main


X6 - W2 Rear Main Wiring Harness to Y1 PTO Clutch

(SE3, W2)

X7 - W1 Front Main Wiring Harness to W6 Engine Wiring

Harness (SE3, W1)

X8 - W6 Engine Wiring Harness to Y2 Fuel Shutoff

Solenoid (SE4, W6)

X9 - W6 Engine Wiring Harness to T1 and T2 Magneto

Ignition (SE4, W6)

X10 - W6 Engine Wiring Harness to N1 Voltage Regulator/

Rectifier (SE4, W6)

WIRING HARNESSES:

W1 - Front Main Wiring Harness

W2 - Rear Main Wiring Harness

W3 - Positive Jumper Wiring Harness

W4 - Negative Jumper Wiring Harness

W5 - Headlight Wiring Harness

W6 - Engine Wiring Harness



Main Wiring Schematic L130

401 Yel

SE 1 - Starting SE 2 - Headlights

S1 Key

G1 Battery

W1

GroundShielded

StartingK1

StartingMotor

M1

200Red

941Wht

700960

200Red

710

Pur100

140

Switch

125 BlkBlk

MotorSolenoid

Blk

Yel/

Blk


0, 1 0

2 1 03GSA2 A1

L B M

Pur

Splice #2

220Red

115 Blk

F1

X1

Fuse

201Red

Red

/Blk

100

S3 BrakeSwitch

705 Pur/Wht

(Off)

(On)

Off

On

943 Wht

945 Wht/Blk942 Wht

949 Wht/Blk

501 Yel

SwitchS2 PTO

705 Pur/Wht

120

Blk

960Yel

X4

X4

E1 and E2Headlight

W5 Headlight

Wiring Harness

500 Yel

Wht

410 Yel20 A401

115 Blk

110 Blk

/Wht

451

940 Wht941 Wht

943Wht

942Wht

Yel/Wht

405 Yel

Yel

X3 12VDC ACCPower Port

P1Hour Meter


500

710 Pur

110Blk

X2

Splice#1

Blk

W4 Negative JumperWiring Harness

W3 PositiveJumper WiringHarness

Yel

700 Pur

X5

410 Yel

451 Yel/Wht

940 Wht

949Wht/Blk

220 Red/Blk

B S

M



SE 3 - Magneto Kill & Start Interlock SE 4 - Engine Ignition/ Charging

111

S5 SeatSwitch

130 Blk

951 Blk/Wht

945 Wht/Blk

Blk

K2 RIOLatchRelay

957 Wht410Yel

951 Blk/Wht952 Wht/Blk

451 Yel/Wht

402 Yel

940 Wht

220 Red/Blk

Y2 Fuel

X7

X8

Red

Wht

Grn

Red

G2Stator

G

Yel Yel

SparkPlug

E3

T1MagnetoIgnition

Wht

V2

Diode

Diode

SparkPlug

E4

V1

T2MagnetoIgnition

X9

ShutoffSolenoid

U

N1 Voltage

Regulator

/Rectifier953

X5

949Wht/Blk

X5

Blk/Wht

Y1 PTO

X5

X5

501

520 Blk

X6957 Wht

Clutch S6 RIOSwitch

Forward/

Reverse

Neutral W2 Rear Main

Wiring Harness

954

S4 RISSwitchReleased

Pushed

402 Yel

Wht

954Wht

Yel

X10

Blk Blk

Red

X6

Blk

Blk

X10

Operator Off

Operator On

Pur

110Blk

945 Wht/

501 Yell

410 Yel

451 Yel/Wht

940 Wht

949 Wht/Blk

Blk

W6 Engine WiringHarness



W1 and W2 Wiring Harness 130

201

20 AFuseF1

201

200220

952953

953

402410

954957

949951

Splice #1

941942

943

940

X4 to W5

120

960

Headlights

110

957

951945

402

940

220451

X5 to W2 RearMain Wiring Harness

X6 to W6Engine Wiring Harness

K2 RIOLatch Relay

X1 to W3 PositiveJumper Wiring Harness

957520130

S6RIO Switch

945

957

951110


111

S5Seat Switch

130111 945

951

W2 Rear Main Wiring Harness

Wiring Harness

501

501

501

520110

X6 to Y1PTO Clutch



P1 Hour Meter

SwitchS3 Brake

705710

945

S1

Key

Switch

200700

941

960

401

451

100140

405

405

140

/Service Indicator

942

105

710

K1 Starting Motor

K1 Starting Motor

125

115

100

X3 to

115

401410

ACC Power Port

S4

952

RISSwitch

954

W1 Front Main Wiring Harness

X2 to W4 NegativeJumper Wiring Harness

Solenoid Positive

Solenoid Negative

SwitchS2 PTO

401501

943

949

700 705

500

120

110

105

125

Splice #2



W1 Front Main Wire Harness Color Codes - L130

W2 Rear Main Wire Harness Color Codes - L130


0.5 100 Blk S1, X3

0.5 105 Blk K1, Splice #2


0.8 115 Blk K1, X3



0.5 140 Blk S1, P1

1.0 200 Red F1, S1

1.0 201 Red X1, F1

1.0 220 Red/Blk F1, X7

0.8 401 Yel S2, X3

0.5 402 Yel K2, X7

0.5 405 Yel S1, P1

0.8 410 Yel X3, K2

0.5 451 Yel/Wht S1, X7

0.8 500 Yel S1, S2

0.8 501 Yel S2, X5

0.5 700 Pur S1, S2

0.5 705 Pur/Wht S2, S3

0.5 710 Pur S3, K1

0.5 940 Wht Splice #1, X7




0.5 945 Wht/Blk S3, X5

0.5 949 Wht/Blk K2, S2

0.5 951 Blk/Wht K2, X5

0.5 952 Wht/Blk K2, S4

0.5 953 Blk/Wht K2, K2

0.5 954 Wht S4, K2

0.5 957 Wht K2, X5

0.5 960 Yel S1, X4


0.5 110 Blk X5, X6

0.5 111 Blk S5, S5

0.5 130 Blk S5, S6

0.8 501 Yel X5, X6

0.8 520 Blk S6, X6

0.5 945 Wht/Blk X5, S5

0.5 951 Blk/Wht S5, X5

0.5 957 Wht S6, X5




W3 and W4 Jumper Wiring Harnesses - All

W5 Headlight Wiring Harness - All

W3 Positive JumperWiring Harness Red

G1 BatteryPositive Terminal

K1 StartingMotor Solenoid


W4 Negative JumperWiring Harness Blk

G1 BatteryNegative Terminal

W1 ShieldedGround


Headlight

E2 LH

E1 RH

Headlight

X4 To W1 Front MainWiring Harness

YelBlk

Yel

Blk



L110W6 Engine Wiring Harness - L100

W6 Engine Wiring Harness, Stator and N1 Voltage Regulator/Rectifier - L110/L130

T1 Magneto

Ignition Coil

WhtV1 Diode

W6 EngineWiring Harness

451

940220402

X6 To W1 FrontMain Wiring Harness

Y1 Fuel

402

Shutoff Solenoid

X9 to N1 VoltageRegulator/Rectifier

(L100)

220451

to N1 Voltage


Wht

Regulator/Rectifier

Wht

Red

Wht

451220

940

402

T1 MagnetoIgnition Coil

Y1 FuelShutoff Solenoid

Grn

W6 EngineWiring Harness(L110)

N1 VoltageRegulator/Rectifier



W6 Engine Wiring Harness - L120/L130

G2 Stator and N1 Voltage Regulator/Rectifier - L100

G2 Stator and N1 Voltage Regulator/Rectifier - L120/L130

T1 Magneto

Ignition Coil

Wht

T2 MagnetoIgnition Coil

V1 Diode

V2 Diode

451

940220402


Y2 Fuel

402

Shutoff Solenoid

220


W6 EngineWiring Harness(L120/L130)

451

X9 To N1 VoltageRegulator/Rectifier

Blk

G2 Stator(L100)

Red

Yel

N1 VoltageRegulator/Rectifier(L100)

X9 to W6 EngineWring Harness

X9 to G2Stator


Blk

Blk

G2 Stator(L120/L130)

Red

Yel

Yel

N1 VoltageRegulator/Rectifier(L120/L130)

X10 to W6 EngineWring Harness

X10 to G2Stator



Y1 PTO Clutch - L130

Y2 Fuel Shutoff Solenoid

N1 Voltage Regulator/Rectifier

X6 To W2 RearMain Wiring Harness

Y1PTO Clutch

Yel

Blk

Red

X7 To W6 EngineWiring Harness

Y2 FuelShutoff Solenoid

RedX7 To W6 EngineWiring Harness

(L100/L120)

Y2 FuelShutoff Solenoid(L110/L130)

X8 To W6 EngineWiring Harness (L130)

(L100/L120)


Yel

Red


X10 to Engine

X10 toEngine Stator Red

Yel

YelX9 toEngine Stator

X9 to Engine


Wht toStator

Wht toStator

Red

(L100) (L120)(L110/L130)

Wiring Harness Wiring Harness

Electrical Diagnostics and Operation - 227

ELECTRICAL DIAGNOSTICS AND OPERATION

Diagnostics and Operation

Power Circuit Operation - L100/L110/L120

Function:

Provides unswitched power to primary components and

switched power to secondary components whenever the

battery is connected.

Operating Conditions, Unswitched Circuits:

Voltage must be present at the following components with

the key switch in the OFF position:

• Battery Positive Terminal

• Starting Motor Solenoid Positive Contact Stud

• Key Switch

• Red Wire at Voltage Regulator/Rectifier Connector

The positive battery cable connects the battery to the

starting motor solenoid bolt.

The ground cable connection is as important as the positive

cable. Proper starting operation depends on these cables

and connections to carry the high current for its operation.

The 201 Red wire, F1 fuse and 200 Red wire provide

unswitched voltage to the key switch.

The F1 fuse and 220 Red/Blk wire provide unswitched

voltage to the voltage regulator/rectifier.

Operating Conditions, Switched Circuits:

Placing the key switch in the RUN position provides voltage

from 200 Red wire through the key switch to the 401, 405,

410 and 402 Yel wires, the hour meter, X3 ACC power port,

K2 RIO latch relay and the Y1 fuel shutoff solenoid.

The 405 Yel wire provides power to the hour meter. The

401 Yel wire provides power to the X3 ACC power port. The

410 Yel wire provides power to the K2 RIO latch relay. The

K2 relay will not energize until a ground is provided to the

coil. The 402 Yel wire provides power to the Y1 fuel shutoff

solenoid coil.



Power Circuit Electrical Schematic - L100/L110/L120

SE 1 - STARTING SE 3 - MAGNETO KILL & START INTERLOCK SE 4 - ENGINE IGNITION/ CHARGING

105

S1 Key

G1 Battery

W1

GroundShielded

StartingK1

StartingM

Motor

M1

200Red

K2 RIOLatchRelay

200Red

100

140

Switch

125 Blk

105Blk

Blk

MotorSolenoid

Blk

410Yel

Blk


0, 1 0

2 1 03GSA2 A1

L B M

Splice #2

220Red

Blk

115 Blk

F1

X1

Fuse

201Red

Red

/Blk

100

402 Yel

220 Red/Blk

Y1 Fuel

X6

X7

Red

Grn

Red

ShutoffSolenoid

410 Yel

20 A

401115 Blk

405 Yel

Yel

X3 ACCPower Port

P1Hour Meter


401

X2

Blk

402 Yel

Yel

U

N1 Voltage

Regulator

/Rectifier

Red

X9



Power Circuit Diagnosis - L100/L110/L120

Test Procedure A

Test Conditions:

• Key switch in OFF position

• Park brake engaged

Between (G1) battery posts, test voltage. Voltage 12.4 VDCor more, go to next

step.

• Less than 12.4 volts, clean battery

terminals and retest. 12.4 volts or above.

• Less than 12.4 volts, charge battery and

retest. 12.4 volts or above.

• Replace battery.

MIF

(K1) Starting motor solenoid at battery

terminal, test voltage.

Battery voltage, go to next step.

• Less than battery voltage, clean, check

and tighten connections for battery cable

and retest. Less than battery voltage,

replace battery cable.

MIF

(S1) Key switch at 200 Red wire, test

voltage.


• No battery voltage, check F1 fuse,

replace if failed, and retest battery voltage.

• Less than battery voltage, check 200

Red wire and connections and retest battery

voltage.

MIF

(X6) Engine Connector at 220 Red/Blk wire,

test voltage.



Red/Blk wire and connections and retest

battery voltage.

• Less than battery voltage, replace wiring

harness.

MIF

G1

K1

200 Red

S1

X6

220 Red/Blk



Test Procedure B

(G1) battery negative post to ground cable

frame connection, test resistance.

Less than 0.1 ohm resistance.

Go to Test Procedure B.

• Check and clean negative battery

terminal and retest. Less than 0.1 ohm

resistance.

• More than 0.1 ohm resistance, check

and clean harness wires and connections to

frame and retest. Less than 0.1 ohm

resistance.MIF

G1

Test Conditions:

• Key switch in RUN position.

• Engine OFF

(S1) Key switch at 401, 405 Yel wires, test

voltage.


• Less than battery voltage, replace key

switch.

MIF

(P1) Hourmeter at 405 Yel wire, test voltage. Battery voltage, go to next step.

• Less than battery voltage, check 405 Yel

wire and connections and retest battery

voltage.

MIF

(X3) ACC power port at 401 and 410 Yel

wires, test voltage.




voltage.

MIF

401 Yel

S1

405 Yel

405 Yel

P1

401 Yel

X3

410 Yel



(K2) RIO latch relay at 410 and 402 Yel



• Less than battery voltage, check 410 and

401 Yel wires and connections and retest

battery voltage.

MIF

(Y2) Fuel shutoff solenoid at 402 Yel wire,

test voltage.

Battery voltage, fuel shutoff solenoid

clicks. Test Complete.

• Less than battery voltage, check 402,

410 and 401 Yel wires and connections and

retest. Battery voltage.

• Fuel shutoff solenoid does not click, See

Fuel Shutoff Solenoid Test. Replace as

needed. Test Complete.

MIF

402 Yel

K2

410 Yel

402 Yel

X7 X7

Red



Power Circuit Operation - L130

Function:

Provides unswitched power to primary components and

switched power to secondary components whenever the

battery is connected.

Operating Conditions, Unswitched Circuits:

Voltage must be present at the following components with

the key switch in the OFF position:

• Battery Positive Terminal

• Starting Motor Solenoid Positive Contact Stud

• Key Switch

• Red Wire at Voltage Regulator/Rectifier Connector

The positive battery cable connects the battery to the

starting motor solenoid bolt.

The ground cable connection is as important as the positive

cable. Proper starting operation depends on these cables

and connections to carry the high current for its operation.

The 201 Red wire, F1 fuse and 200 Red wire provide

unswitched voltage to the key switch.

The F1 fuse and 220 Red/Blk wire provide unswitched

voltage to the voltage regulator/rectifier.

Operating Conditions, Switched Circuits:

Placing the key switch in the RUN position provides voltage

from 200 Red wire through the key switch to the 500, 405,

401, 410 and 402 Yel wires, the hour meter, S2 PTO switch,

X3 ACC power port, K2 RIO latch relay and the Y1 fuel

shutoff solenoid.

The 405 Yel wire provides power to the hour meter. The

500 Yel wire provides power to the S2 PTO switch. The 401

Yel wire provides power to the X3 ACC power port. The 410

Yel wire provides power to the K2 RIO latch relay. The K2

relay will not energize until a ground is provided to the coil.

The 402 Yel wire provides power to the Y1 fuel shutoff

solenoid coil.



Power Circuit Electrical Schematic - L130

401 Yel

Off

On

SwitchS2 PTO

500 Yel


105

S1 Key

G1 Battery

W1

GroundShielded

StartingK1

StartingM

Motor

M1

200Red

K2 RIOLatchRelay

200Red

100

140

Switch

125 Blk

105Blk

Blk

MotorSolenoid

Blk

410Yel

Blk


0, 1 0

2 1 03GSA2 A1

L B M

Splice #2

220Red

Blk

115 Blk

F1

X1

Fuse

201Red

Red

/Blk

100

402 Yel

220 Red/Blk

Y1 Fuel

X6

X8

Red

Grn

Red

ShutoffSolenoid

410 Yel

20 A

401115 Blk

405 Yel

Yel

X3 ACCPower Port

P1Hour Meter


401

X2

Blk

402 Yel

Yel

U

N1 Voltage

Regulator

/Rectifier

Red

X10



Power Circuit Diagnosis - L130

Test Procedure A

Test Conditions:



• PTO in OFF position

Between (G1) battery posts, test voltage. Voltage 12.4 VDC or more, go to next

step.

• Less than 12.4 volts, clean battery

terminals and retest. 12.4 volts or above.

• Less than 12.4 volts, charge battery and

retest. 12.4 volts or above.

• Replace battery.

MIF

(K1) Starting motor solenoid at battery

terminal, test voltage.


• Less than battery voltage, clean, check

and tighten connections for battery cable

and retest. Less than battery voltage,

replace battery cable.

MIF

(S1) Key switch at 200 Red wire, test

voltage.


• No battery voltage, check F1 fuse,

replace if failed, and retest. Battery voltage.


Red wire and connections and retest.

Battery voltage.

MIF

(X6) Engine Connector at 220 Red/Blk wire,

test voltage.



Red/Blk wire and connections and retest.

Battery voltage.

• Less than battery voltage, replace wiring

harness.

MIF

G1

K1

200 Red

S1

X6

220 Red/Blk



Test Procedure B

(G1) battery negative post to ground cable

frame connection, test resistance.

Less than 0.1 ohm resistance. Go to Test

Procedure B.

• Check and clean negative battery

terminal and retest. Less than 0.1 ohm

resistance.

• More than 0.1 ohm resistance, check

and clean harness wires and connections to

frame and retest. Less than 0.1 ohm

resistance.. MIF

G1

Test Conditions:

• Key switch in RUN position.

• Engine OFF

• PTO in OFF position.

• Park brake engaged.

(S1) Key switch at 401, 405 Yel wires, test

voltage.



switch.

MIF

(P1) Hourmeter at 405 Yel wire, test voltage. Battery voltage, go to next step.



voltage.

MIF

(S2) PTO switch at 500 and 401 Yel wires,

test voltage.




voltage.

MIF

401 Yel

S1

405 Yel

405 Yel

P1

500 Yel

S2

401 Yel



(X3) ACC power port at 401 and 410 Yel





voltage.

MIF

(K2) RIO latch relay at 410 and 402 Yel



• Less than battery voltage, check 410 and

401 Yel wires and connections and retest

battery voltage.

MIF

(Y2) Fuel shutoff solenoid at 402 Yel wire,

test voltage.

Battery voltage. Test Complete.

• Less than battery voltage, check 402,

410 and 401 Yel wires and connections and

retest battery voltage.

• Fuel shutoff solenoid does not click, See

Fuel Shutoff Solenoid Test. Replace as

needed. Test Complete. MIF

401 Yel

X3

410 Yel

402 Yel

K2

410 Yel

402 Yel

X8 X8

Red



Cranking Circuit Operation - L100/L110/L120/L130

Function:

To energize the starting motor solenoid and engage the

starting motor which cranks the engine.

Operating Conditions:

To crank the engine the key switch must be in the START

position, the brake must be ON and the PTO must be in the

OFF (disengaged) position. The operator does not have to

be on the seat to crank the engine with the brake on.

Theory of Operation:

Current flows from the battery through F1 fuse to the key

switch. With key switch in the START position, current flows

through the key switch, through 700 Pur wire, PTO switch

contacts (switch in the OFF position), 705 Pur/Wht wire,

brake switch contacts (brake ON), and 710 Pur wire to the

starting motor solenoid coil.

The ground circuit for the solenoid coil is provided through

the 105 and 125 Blk wires X2 connector and Blk wire to W1

shielded ground

With the solenoid coil energized, the solenoid contacts

close and high battery current flows across the solenoid

contacts to the starting motor, causing it to crank the

engine.



Cranking Circuit Electrical Schematic - L100/L110/L120/L130

SE 1 - STARTING SE 3 - MAGNETO KILL & START INTERLOCK

105

S1 Key

G1 Battery

W1

GroundShielded

StartingK1

StartingM

Motor

M1

200Red

700

200Red

710

Pur

Switch

125 Blk

105Blk

Blk

MotorSolenoid


0, 1 0

2 1 03GSA2 A1

L B M

Pur

Splice #2

Blk

F1

X1

Fuse

201Red

Red

S3 BrakeSwitch

705 Pur/Wht

(Off)

(On)

705 Pur/Wht

20 A

710 Pur

X2

700 Pur

S2 PTOSwitch

(Off)

(On)

Off

On

SwitchS2 PTO

705 Pur/Wht700 Pur

Used on L130 w/electric PTO

Used on L100/L110/L120 w/manual PTO



Cranking Circuit Diagnosis - L100/L110/L120/L130

Test Procedure A

Test Procedure B

Test Conditions:




(K1) Negative battery terminal at 105 Blk

wire, test resistance.

0.2 ohm resistance or less, go to Test

Procedure B.

• More than 0.2 ohms, check 105 and 125

Blk wires and connections. Check X2

connector and W4 negative jumper wiring

harness and connections. Retest. 0.2 ohms

or less.

MIF

105 Blk

K1

c CAUTION: Avoid injury! To help prevent starting

of engine during this test procedure:

Disconnect fuel shutoff solenoid connector (X7

or X8 on L130) located near voltage regulator/

rectifier. Stay clear of parts that may rotate on

the starting motor and engine.

Test Conditions:

• Fuel shutoff solenoid DISCONNECTED.

• Key switch in START position during each test.


• Park brake engaged.

(S1) Key switch at 700 Pur wire, test voltage Battery voltage, go to next step.


switch.

MIF

(S2) PTO switch at 705 Pur/Wht wire, test

voltage.


• Less than battery voltage, check 700 Pur

wire and connections. If OK, replace PTO

switch.

MIF

700 PurS1

705

S2 manual PTO

Pur/Wht

705Pur/Wht

S2 electric PTO



Ignition and Shutoff Circuit Operation - L100/L110/L120/L130

Function:

To create a spark at the correct time that ignites the fuel/air

mixture in the cylinder. To keep the engine running by

eliminating ground paths to both sides of the ignition

module primary coil.

Operating Conditions:

To produce a spark, the key switch must be in the START or

RUN position. The operator can be ON or OFF the seat;

however, the PTO must be disengaged and the brake

switch must be ENGAGED (brake pedal depressed or park

brake on) to start the engine.

Once the engine is running, the operator must be ON the

seat to disengage the brake or engage the PTO.

The engine will shutoff when the key switch is turned to the

OFF position, the operator leaves the seat without locking

the parking brake, and disengaging the PTO, or the

operator places the machine in reverse with the PTO

engaged and not pressing the RIS switch to its momentary

ON position to energize the RIO latch relay.

(S3) Brake switch at 710 Pur wire, test

voltage.



Pur/Wht wire and connections. If OK,

replace brake switch.

MIF

(K1) Starting motor solenoid at 710 Pur

wire, test voltage.


• Less than battery voltage, check 710 Pur


voltage.

MIF

(K1) Starting motor solenoid at Red cable to

starting motor, test voltage


• Less than battery voltage, test solenoid

and replace as necessary. Retest battery

voltage.

MIF

(M1) Starting motor at Red cable from

starting motor solenoid

Battery voltage, starting motor cranking.

Test complete.

• Less than battery voltage, clean cable

ends, ensure connections are tight to

starting motor, solenoid and battery. Battery

voltage and starting motor cranks, test

complete.

• Starting motor NOT cranking, repair or

replace starting motor as necessary. Battery

voltage and starting motor cranks, test

complete.MIF

710 Pur S3

710 Pur

K1

Red

K112 VDC

M1

Red



System Operation:

The ignition system is a transistor-controlled magneto

design. Ignition timing is controlled by the transistor and is

not adjustable. The engine is shut off by grounding both

sides of the ignition primary coil. With the ignition primary

coil grounded, a spark cannot be produced.

When the engine is turning over, the flywheel magnet

induces current into the magneto ignition coil, which in turn

produces current high enough to jump the spark plug gap,

creating spark to ignite the engine fuel/air mixture.

Placing the key switch in the START or RUN position

eliminates the path to ground for the Wht wire from the

engine magneto, 940 and 941 Wht wires, key switch

contacts (normally closed), 100, 115, 105, and 125 Blk

wires.

The seat switch controls two paths to ground. When the

operator is ON the seat, the brake and PTO switches can

be either on OR off. These paths are eliminated when the

operator is ON the seat (seat switch open). This conditions

breaks the ground circuit 940, 942 Wht wires, brake switch,

945 Wht/Blk, seat switch, and 111, 130, 110, and 125 Blk

wires. This conditions also breaks the ground circuit 940,

943 Wht wires, PTO switch, 949 Wht/Blk, 951 Blk/Wht, seat

switch, and 130, 110, and 125 Blk wires.

If the operator is OFF the seat (seat switch closed), then

the brake switch must be ON (park brake engaged) and the

PTO must be OFF (disengaged).

If the operator is OFF the seat and the brake switch is also

OFF this creates the ground circuit path 940, 942 Wht

wires, brake switch, 945 Wht/Blk, seat switch, and 111,

130, 110, and 125 Blk wires.

If the operator is OFF the seat and the PTO is ON, this

creates the ground circuit 940, 943 Wht wires, PTO switch,

949 Wht/Blk, 951 Blk/Wht, seat switch, and 130, 110, and

125 Blk wires.

An additional path to ground will be created with the engine

running, if the operator places the machine in reverse while

the PTO is engaged and the RIS switch is not pressed to its

momentary ON position to energize the RIO latch relay.

This conditions also creates the ground circuit 940, 943

Wht wires, PTO switch, 949 Wht/Blk, RIO latch relay

(normally closed contacts) 957 Wht, RIO switch (normally

open contacts), and (520 Blk on L130), 110, and 125 Blk

wires.



Ignition and Shutoff Circuit Electrical Schematic - L100/L110/L120/L130


111

Operator Off

S5 SeatSwitch

Operator On

130

951 Blk/Wht

945 Wht/Blk

Blk

105

S1 Key

G1 Battery

W1

GroundShielded

StartingK1

200Red

941Wht

K2 RIOLatchRelay

200Red

100

Switch

957

125 Blk

105Blk

Blk

MotorSolenoid

Blk

410Yel


0, 1 0

2 1 03GSA2 A1

L B M

Splice #2

Blk

951

952 Wht/Blk

115 Blk

F1

X1

Fuse

201Red

Red

100

S3 BrakeSwitch

(Off)

(On)

943 Wht

945

949 Wht/Blk

940 Wht X6 W6 Engine WiringHarness

Wht

SparkPlug

E3T1MagnetoIgnition

Diode

V1

X8

410 Yel20 A

401

953

949Wht/Blk

X5

110 Blk

940Wht

Blk/Wht

Yel

957 WhtX2

S6 RIOSwitch

Forward/

Reverse

Neutral

Splice#1

Blk

954

S4 RISSwitch

Released

Pushed

Wht

954Wht

S2 PTOSwitch

(Off)

(On)

X5110 Blk

X6 W6 Engine WiringHarness - L110

Wht

SparkPlug

E3

T1MagnetoIgnition

X8

SparkPlug

E3

V2

Diode

Diode

SparkPlug

E4

V1

X8

X6W6 Engine WiringHarness

Wht

T1 MagnetoIgnition

T2 MagnetoIgnitionBlk

L100

942Wht

X5

Wht

Blk/Wht

X5

Wht/Blk

L120/L130



Ignition and Shutoff Circuit Diagnosis - L100/L110/L120/L130

Test Procedure A

Test Procedure B

Test Conditions:

• Engine running.

• Park brake ON.


• Ignition test tools installed.

Engine spark plugs. Install ignition tester

and check spark output. See “Spark Test” in

Tests and Adjustments Section

Good spark, Test Complete.

• If spark not good, go To Step (1) of Test

Procedure B.

D-05351ST

Test Conditions:


• Park brake ON


• Engine cool to avoid burns

Visually inspect spark plug. Check air gap. Spark plug not fouled or damaged.

• Check air gap and perform spark test.

• Spark plug fouled, replace spark plug.

MIF



Magneto to flywheel magnets air gap. Air gap within specification. Go to Step

(3).

• Specification: Air gap 0.2 - 0.3 mm

(0.008 - 0.012 in.). If not within specification

adjust as needed. Go to Step (3).

MIF

Disconnect S3 brake switch. Measure for

continuity between 945 Wht/Blk wire at S3

brake switch plug and ground.

Continuity to ground. Go To Step (4).

• Check 100, 115, 105, and 125 Blk wires

and connections. Check X2 connector.

Repeat test, continuity to ground, Go To

Step (4).

MIF

X6 Front main wiring harness connector.

Measure for continuity between 940 Wht

wire and ground.

Continuity to ground, Go To Step (1) of

Test Procedure C.

• No continuity to ground, replace key

switch. Go To Step (1) of Test Procedure

C.

• Check 941 and 940 Wht wires and

connections. Repeat test, continuity to

ground, Go To Step (1) of Test Procedure

C. MIF

FlywheelMagnet

Air Gap

Magneto

Plug to S1100 Blk

X6

940 Wht



Test Procedure C

Test Conditions:

• Key Switch in RUN position engine NOT running.

• Park brake OFF


• Operator OFF Seat

Disconnect S3 brake switch. Measure for


brake switch plug and ground.


• No continuity to ground, replace seat

switch. Go To Step (2).

• Check 945 Wht/Blk, 111, 130, 110, and

125 Blk wires and connections. Check X2

and X5 connectors. Repeat test, continuity

to ground, Go To Step (2).

MIF



wire and ground.


Test Procedure D.

• No continuity to ground, replace brake


D.




D. MIF

Plug to S3

945 Wht/Blk

X6

940 Wht



Test Procedure D

Test Conditions:

• Key Switch in RUN position engine NOT running.

• Park brake ON

• PTO in ON position

• Operator OFF Seat

Disconnect S2 PTO switch. Measure for


PTO switch plug and ground.


• No continuity to ground, replace seat

switch. Go To Step (2).

• Check 949 Wht/Blk, 951 Blk/Wht, 130,

110, and 125 Blk wires and connections.

Check X2 and X5 connectors. Repeat test,

continuity to ground, Go To Step (2).

MIF



wire and ground.


Test Procedure E.

• No continuity to ground, replace PTO


E.




E. MIF

Plug to S2manual PTO

Plug to S2electric PTO

949 Wht/Blk

949Wht/Blk

X6

940 Wht

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