Troubleshooting; Troubleshooting - Toro Workman 3000 Series Service Manual

Troubleshooting

Giving Immediate attention to any indication of a prob-
lem can prevent major failures, and increase the life of
the engine.
Symptom
Engine overheats.
Rough idle or engine stalls.
Liquid Cooled Gas Engine
Never make more that one adjustment at a time, then lo­
cate the trouble by a process of elimination. Remember
the cause is usually SIMPLE, rather than mysterious
and complicated.
Possible Causes
Cooling system faulty.
– Radiator screen plugged.
– Fan belt slipping.
– Low coolant level.
Incorrect ignition timing.
Coolant leaks:
– Loose cylinder head bolts.
– Damaged cylinder head gasket.
– Cracked cylinder block.
– Cracked cylinder head.
Loose intake manifold bolts or leaking from gasket.
Cracked intake manifold.
Ignition system problems.
Compression too low.
Idle speed set too low.
Idle mixture too lean or too rich.
Carburetor problems.
Stale fuel in carburetor.
Vacuum leaks:
– Purge control valve hose.
– Vacuum hoses.
– Intake manifold.
– Carburetor.
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Workman 3000/4000 Series