Kohler Command PRO EFI Series

ECV940 & ECV980
Service Manual
KohlerEngines.com
IMPORTANT: Read all safety precautions and instructions carefully before operating equipment. Refer to operating
instruction of equipment that this engine powers.
Ensure engine is stopped and level before performing any maintenance or service.
62 690 05 Rev. E
1
2 Safety
3 Maintenance
5 Specifi cations
17 Tools and Aids
20 Troubleshooting
24 Air Cleaner/Intake
25 Electronic Fuel Injection (EFI) System
54 Governor System
80 Lubrication System
82 Electrical System
87 Starter System
91 Disassembly/Inspection and Service
112 Reassembly

Kohler Command PRO EFI Series Specifications

General

Fuel System	Electronic Fuel Injection (EFI)
Starter	Electric
Governor Type	Mechanical
Lubrication	Full Pressure
Cooling System	Air Cooled
Ignition System	Electronic
Engine Type	4-cycle, single cylinder, overhead valve (OHV)

Summary

Safety

SAFETY PRECAUTIONS

General safety warnings and precautions for operating the engine.

Maintenance

MAINTENANCE INSTRUCTIONS

Instructions and warnings before performing maintenance on the engine.

Troubleshooting

TROUBLESHOOTING GUIDE

General guidance and common causes for engine starting and running issues.

Engine Starts Hard

Common causes for the engine starting with difficulty.

EFI SYSTEM

OPERATION

Explanation of how the Electronic Fuel Injection (EFI) system operates and its components.

ECU Reset Procedure

Steps to reset the ECU after component replacement or troubleshooting.

TPS Learn Procedure

Procedure for calibrating the Throttle Position Sensor after ECU reset or replacement.

Governor System

ELECTRONIC GOVERNOR

Overview of the electronic governor system and its operation.

ORIGINAL DESIGN GCUHarness Diagnostics and Troubleshooting

MECHANICAL GOVERNOR

Starter System

Troubleshooting-Starting Diffi culties

Table listing common starting difficulties and their possible causes.

Solenoid Tests