Technical Information; Trouble Shooting - Kohler KD 625/2 Workshop Manual

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TECHNICAL INFORMATION

TROUBLE SHOOTING

THE ENGINE MUST BE STOPPED IMMEDIATELY WHEN:
1) - The engine rpms suddenly increase and decrease;
2) - A sudden and unusual noise is heard;
3) - The colour of the exhaust fumes suddenly darkens;
4) - The oil pressure indicator light turns on while running.
TABLE OF LIKELY ANOMALIES AND THEIR SYMPTOMS
The following table contains the possible causes of some failures which may occur during operation.
Always perform these simple checks before removing or replacing any part.
POSSIBLE CAUSE
Obstructed fuel line
Fuel filter clogged
Air or water leaks in fuel system
The tank cap vent hole is clogged
No fuel
Faulty fuel feeding pump
Extra fuel control level sticking
Clogged air filter
Cooling circuit clogged
Incorrect governor linkage adjustment
Governor spring broken or unhooked
Low idle speed
Rings worn or sticking
Worn cylinder
Worn main con rod-rocker arm bearings
Badly sealed intake valve
Head tightening nuts loose
Damaged cylinder head gasket
Excessive valve-rocker arm clearance
No clearance between valves and
rocker arms
Valves sticking or damaged
Defective timing system
Bent rods
Crankshaft not turning freely
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PROBLEM
KD 625-2 Workshop Manual_cod. ED0053029380_1° ed_ rev. 00