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Kohler CH680

Kohler CH680
124 pages
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CH18-CH25, CH620-CH730, CH740, CH750
Service Manual
2 Safety
3 Maintenance
5 Speci cations
15 Tools and Aids
18 Troubleshooting
23 Air Cleaner/Intake
24 Fuel System
40 Governor System
58 Lubrication System
60 Electrical System
79 Starter System
88 Clutch
90 Disassembly/Inspection and Service
107 Reassembly
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.
124 690 06 Rev. P KohlerEngines.com

Questions and Answers:

Kohler CH680 Specifications

General IconGeneral
Displacement674 cc
Compression Ratio8.5:1
Fuel SystemCarburetor
Ignition SystemElectronic
Cooling SystemAir-cooled
StarterElectric
Engine Type4-cycle, overhead valve (OHV)
Oil Capacity1.9 L (2.0 U.S. qt)
LubricationFull Pressure
Power22 hp (16.4 kW) at 3600 rpm

Summary

Maintenance

MAINTENANCE SCHEDULE

Schedule of maintenance tasks based on operating hours or time intervals.

Specifications

TORQUE SPECIFICATIONS

Recommended torque values for various fasteners and components.

CLEARANCE SPECIFICATIONS

Specifications for various engine component clearances and tolerances.

Troubleshooting

TROUBLESHOOTING GUIDE

General guide to diagnosing common engine starting and running issues.

CRANKCASE VACUUM TEST

Method for testing crankcase vacuum levels to diagnose engine issues.

CYLINDER LEAKDOWN TEST

Procedure for performing a cylinder leakdown test to identify leaks.

Fuel System

FUEL SYSTEM TESTS

Procedures for testing the fuel system to diagnose starting problems.

eChoke System Standard Checks

Standard diagnostic checks for the eChoke™ system.

Governor System

GCUHarness Diagnostics and Troubleshooting

Procedures for diagnosing the GCU and harness for electronic governor issues.

Governor Adjustments

Procedures for adjusting the mechanical governor settings.

Lubrication System

CHECK OIL LEVEL

Instructions for checking and maintaining the engine oil level.

CHANGE OIL AND FILTER

Step-by-step guide for changing the engine oil and filter.

Starter System

Troubleshooting-Starting Diffi culties

Common issues and their possible causes for starting difficulties.

Reassembly

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