100862 - FRONT TiNE TiLLER
TROUbLESHOOTiNG
37
Gasoline Engine: No Power
Problem
Cause
Solution
When increasing throttle, speed increase
slow (or even decreases and stops
running)/poor compression
Air in fuel line or fuel line clogged.
Exhaust air or dredge fuel line.
Main oil flow hole is not adjusted
properly.
Readjust.
In carburetor, needle valve hole and
main oil flow hole clogged.
Clean and blow to clear.
Fuel cock is clogged up.
Clean/replace damaged part.
Too much carbon deposit in combustion
chamber.
Clear away.
Too much carbon fouling in muffler and
exhaust pipe.
Clear away.
Air cleaner is clogged up.
Clean air cleaner filter element.
Intake pipe is leaking.
Repair or replace.
Piston or cylinder or piston ring is worn.
Replace the worn part.
Air leakage from the surface where
the cylinder block contacts the cylinder
head.
Replace cylinder gasket.
Too big or too small valve clearance.
Readjust.
Valve tightness is poor.
Repair.
Gasoline Engine Running Roughly
Problem
Cause
Solution
Knocking sound
Piston, cylinder or piston ring is worn
excessively.
Replace the worn part.
Piston pin and piston pin hole are worn
excessively.
Replace piston or piston pin.
Piston pin and piston pin hole are worn
excessively.
Replace tie rod.
Roller bearing for crankshaft main shaft
is worn.
Replace roller bearing.
Abnormal combustion
Engine is too hot.
Shut down and allow engine to cool off before
troubleshooting.
Too much carbon deposit in combustion
chamber.
Clear away.
Improper gasoline brand or low gasoline
quality.
Replace with qualified gasoline.
Spark plug
There is water in float chamber.
Clean.
Improper spark plug electrodes
clearance.
Adjust.
Faulty spark plug.
Replace spark plug.
