Service Manual
Table Of Contents
- Title Page
- Revision History
- Reader Comments
- Preface
- Table Of Contents
- 1 - Safety
- 2 - Product Records and Maintenance
- 3 - Engine
- Kohler Engine Service Manual
- 4 - Electrical System
- General Information
- Electrical Diagrams
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Component Testing
- Ignition Switch
- Hour Meter
- Fuse
- Fusible Link
- Relays
- Remote Transmitter (Machines with Single Channel Controller
- Remote Transmitter (Machines with Multi Channel Controller)
- Wireless Control Module (Machines with Single Channel Controller)
- Wireless Control Module (Machines with Multi Channel Controller)
- Diode Assembly (Serial Number Below 310000000)
- Service and Repairs
- 5 - Blower Assembly
- 6 - Chassis
- 7 - Electrical Diagrams
- Electrical Schematic Model 44538 (S/N Below 310000000)
- Electrical Schematic Models 44538 and 44539 (S/N From 310000000 to 311999999) and Model 44542
- Electrical Schematic Models 44538 and 44539 (S/N Above 312000000)
- Engine Electrical Diagram (S/N Below 310000000)
- Engine Electrical Diagram (S/N Above 310000000)
- Control Module Wake Up
- Crank Circuits
- Run Circuits
- Engine Speed Increase Circuits
- Nozzle Rotation Circuits
- Wire Harness Drawing Model 44538 (S/N Below 310000000)
- Wire Harness Diagram Model 44538 (S/N Below 310000000)
- Wire Harness Drawing Models 44538 and 44539 (S/N 310000000 to 311999999) and Model 44542
- Wire Harness Diagram Models 44538 and 44539 (S/N 310000000 to 311999999) and Model 44542
- Wire Harness Drawing Models 44538 and 44539 (S/N Above 312000000)
- Wire Harness Diagram Models 44538 and 44539 (S/N Above 312000000)
Rev. C
Page 7 -- 6
Engine Electrical Diagram
Serial Numbers Below 310000000
All ground wires are black.
DLA 2B (pin B DLA)
DLA2A(pinCDLA)
TX
Diag Lamp Driver
GCU Power +12V
RX
GROUND
Speed Input
Shutdown
GROUND
DLA1A(pinADLA)
DLA 1B (pin D DLA)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
A
B
C
D
WHITE
RED/YELLOW
RED
BLACK (GRD)
PINK
BROWN
GRAY
ORANGE
DIGITAL
RED/YELLOW
(30 A)
RED/WHITE
GREEN
GRAY
RED
MACHINE
WIRE
HARNESS
LINEAR
ACTUATOR
(DLA)
GOVERNOR
CONTROL
UNIT
(GCU)
NOTE: THE OIL PRESSURE
SWITCH IS NORMALLY OPEN
AND CLOSES WHEN ENGINE
OIL PRESSURE EXISTS
ProForce Debris Blower