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Kohler Command CV640 - User Manual

Kohler Command CV640
92 pages
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124 690 07 Rev. H KohlerEngines.com
CV17-CV25, CV620-CV730, CV740, CV750
Service Manual
2 Safety
3 Maintenance
5 Specications
16 Tools and Aids
19 Troubleshooting
23 Air Cleaner/Intake
24 Fuel System
30 Governor System
31 Lubrication System
33 Electrical System
49 Starter System
58 Disassembly/Inspection and Service
75 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.

Questions and Answers

  • J
    Jennifer CopelandNov 16, 2025
    How to fix a Kohler Engine that cranks but won't start?
    • N
      nixonconnieNov 16, 2025
      If your Kohler Engine cranks but won't start, possible causes include a backwards battery connection (correct it), a blown fuse (replace it), or a malfunctioning carburetor solenoid (repair or replace it). Other potential issues are a choke not closing (ensure proper function), a clogged fuel line or filter (clear the clog), or a failed diode in the wiring harness (replace it). Also, check for an empty fuel tank (refill it), a faulty electronic control unit (replace it), faulty ignition coils or spark plugs (replace them), a malfunctioning fuel pump (repair or replace it and check hoses), or a closed fuel shut-off valve (open it). Furthermore, inspect the ignition module(s) (fix or replace), ensure adequate voltage to the electronic control unit, check the interlock switch (repair if neede...

Kohler Command CV640 Specifications

General IconGeneral
Engine TypeV-Twin
Compression Ratio8.5:1
Cooling SystemAir-cooled
Fuel SystemCarburetor
Ignition SystemElectronic
Starter TypeElectric
Displacement674 cc
Max Power20.0 hp
Oil Capacity1.9 L

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