Kohler Command PRO ECV630 Service Manual page 61

4. Verify that governor has been set correctly. With linkage still retained in FULL THROTTLE position (Step 2),
unsnap bushing clip, separate linkage from bushing, and remove bushing from lever. Follow Steps 3 and 4 in
Checking Initial Adjustment.
5. Reconnect dampening spring into its governor lever hole from bottom. Reinstall bushing and reattach throttle
linkage. Reattach governor spring in marked hole.
6. Start engine and allow it to fully warm up and establish closed loop operation (approximately 5-10 min.). Check
speed settings and adjust as necessary, first low idle speed, and then high speed setting.
TROUBLESHOOTING
Troubleshooting Guide
Condition
Fuel pump not running.
Faulty spark plugs.
Old/stale fuel.
Incorrect fuel pressure.
Speed sensor loose or faulty.
Engine Starts Hard
or Fails to Start TPS offset incorrect (initialization).
When Cold.
Engine temperature sensor faulty.
Engine temp sensor faulty.
Faulty coils.
Low system voltage.
Faulty injectors.
Faulty spark plugs.
Fuel pump not running.
Fuel pressure low.
Insufficient fuel delivery.
Engine starts hard
or fails to start TPS offset incorrect (Initialization).
when hot
Speed sensor loose or faulty.
TPS faulty.
Engine temperature sensor faulty.
Faulty injectors.
Faulty spark plugs.
Insufficient fuel delivery.
Engine stalls or
TPS offset incorrect.
idles roughly (cold
TPS faulty.
or warm)
Faulty engine temperature sensor.
Faulty injectors.
Fuel injector(s), fuel filter, fuel line, or fuel pick-up dirty/restricted.
Dirty air cleaner.
Insufficient fuel pressure or fuel delivery.
Engine misses,
Vacuum (intake air) leak.
hesitates, or stalls
Improper governor setting, adjustment or operation.
under load
Speed sensor malfunction.
TPS faulty, mounting problem or TPS Initialization Procedure incorrect.
Bad coil(s), spark plug(s), or wires.
24 690 02 Rev. D
Possible Cause
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EFI SYSTEM-BOSCH
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