suzuki rm25003

18-2 TROUBLESHOOTING

TROUBLESHOOTING

ENGINE

Complaint	Possible Cause	Remedy
Engine does not start	Fuel deterioration	Replace
or hard to start	No fuel flow to the carburetor
	• Fuel valve clogged	Clean
	• Fuel hose clogged	Clean or replace
	• Fuel tank cap breather hose clogged	Clean
	• Carburetor float valve malfunction	Replace
	Carburetor overflow pipę clogging	Clean
	Carburetor air vent pipę clogging	Clean
	Too rich air/fuel mixture in combustion chamber	Scavange
	Incorrect ignition timing	Ad j ust
	No spark at spark pług	Replace
	Low compression
	• Piston ring worn or stuck	Replace
	• Cylinder worn ę''V'	Replace
	• Air leak from cylinder gasket \ V	Replace
	• Air leak from crankshaft oil seal_ \ \ \	Replace
Engine stalls	Fuel deterioration ■ \ \ \ /\,	Replace
	Fouled spark pług - \ \ V-'"'y N,/"	Clean or replace
	Fuel hose clogged , \ V \	Clean or replace
	Air cleaner clogged \ \ \	Clean or replace
	Carburetor jets clogged, \ ) "	Clean
	Low compression V^;
	• Piston ring worn or stuck	Replace
	• Cylinder worn	Replace
	• Air leak from cylinder gasket	Replace
	• Air leak from crankshaft oil seal	Replace
	Incorrect ignition timing	Ad j ust
	Carburetor fuel level maladjustment	Ad j ust
Insufficient power	Fuel deterioration	Replace
	Brake dragging	Ad j ust
	Exhaust pipę cracked or clogged with carbon	Replace or clean
	Exhaust valve maladjustment	Ad j ust
	Exhaust valve carbon deposits	Clean
	Air cleaner element clogged	Clean or replace
	Carburetor jets clogged	Clean or replace
	Incorrect fuel level in carburetor	Ad j ust
	Incorrect spark pług gap	Adjust or replace
	Cylinder or piston ring worn	Replace
	Reed valve malfunction	Replace
	Incorrect ignition timing	Adjust