Replacement Part List

V. Running Hot - Troubleshooting

TROUBLE

CAUSE

REMEDY

Engine is

excessively hot

lncorrect ignition timing

Readjust ignition advance angle

Engine oil is low.

Add engine oil to the upper level

mark.

Exhaust pipe is clogged

Clean the exhaust pipe.

Exhaust leak at muffler or cylinder head.

Repair exhaust leak.

Flywheel fan is dirty or clogged with

debris.

Clean the flywheel fan.

Flywheel fan is loose.

Tighten the flywheel fan bolts.

Piston, cylinder, or piston rings are worn.

Replace worn parts.

Connecting rod is worn.

Replace connecting rod.

Engine speed is set too fast.

Adjust engine speed to proper value.

Crankshaft bearing is worn.

Replace crankshaft bearing.

NOTE: The engine should measure: 176°F (80°C) - 212° F (100°C) at the exhaust outlet

and < 140° on the lower side of the crankcase. If temperatures exceed these specifications

the engine is running excessively hot.