John deere lt166 lawn garden tractor service repair manual

Page 32

TROUBLESHOOTING

ENGINE—KOHLER

Engine won’t shut off

Adjust idle speed to specs. Move throttle to idle before shutdown

Inspect piston, valves, cylinder head & exhaust for high carbon build-up

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Lifter is collapsed

Lifter is stuck in bore

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Water in fuel bowl of carburetor Engine RPM too low; automatic compression release still on Adjust low idle speed

3 - 10

Engine runs slow & clicks

Fuel shutoff valve closed Move governor shaft with engine running, check for resistance

White smoke on start-up

Inspect engine ground cable

Vapor lock. Check temperature of fuel system. Clear vent in top of fuel cap

Engine won’t run

Dirt in carburetor. Float sticking Clean carb, replace filter, check float

Engine clatters

Check or Solution

Engine stops when hot

Inspect ignition switch and ground

Problem or Symptom

Fuel overflows carburetor vent

Engine runs on after shutdown

Engine races or runs one speed

TROUBLESHOOTING (Continued)

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9/25/00


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