19569 Suzuki RM250 4

TROUBLESHOOTING 18-3

Complaint	Possible Cause	Remedy
Engine runs poorly in	Exhaust valve maladjustment	Adjust
Iow speed rangę	Wide spark pług gap	Adjust or replace
	Carburetor air screw maladjustment	Adjust
	Incorrect carburetor fuel level	Adjust
	Improper jet needle size	Replace
	Incorrect ignition timing	Adjust
	CDI unit malfunction	Replace
	Throttle position sensor malfunction	Replace
	Ignition coil damage	Replace
	Magneto malfunction	Replace
	Magneto short Circuit	Replace
	Exhaust valve breather hose clogged	Clean
Engine runs poorly in	Narrow spark pług gap	Adjust or replace
high speed rangę	Incorrect carburetor fuel level	Adjust
	Incorrect main jet setting	Adjust
	Power jet solenoid malfunction ^	Replace
	Retarded ignition timing \	Adjust
	CDI unit malfunction ; \ \ \ / >	Replace
	Ignition coil damage \ \ \	Replace
	Air cleaner element ęlogged\ } \ ^v	Clean or replace
	Magneto short Circuit. \ \\ < ^v	Replace
	Exhaust pipę crae^ed . \\ \ \ \	Replace
	Exhaust valve malfunction^ '	Clean, adjust or
	• V • \ \ \ \ -	replace
	Pistpn rińg stućk-	Replace
Engine speed does nok	Too tiigh engine idle speed	Adjust
return smoothly	/ V /
Exhaust valve does not	Carbon deposits on exhaust valve	Clean
work	Exhaust valve damage	Replace
	Governer damage	Replace
	Exhaust valve shaft damage	Replace
	Valve spring damage	Replace
	Exhaust valve breather hose clogged	Clean
Spark pług does not	Ignition coil malfunction	Replace
ignite	Spark pług malfunction	Replace
	Magneto malfunction	Replace
	CDI unit malfunction	Replace
	Wide spark pług gap	Adjust
	Engine kill switch malfunction	Repair or replace
Carbon deposits on	Too rich air/fuel mixture	Adjust
spark pług porcelain	Too rich oil/gasoline mixture	Adjust
	Improper spark pług heat rangę	Replace
Spark pług electrode	Improper spark pług heat rangę	Replace
damage	Overheating	CZ?^>2-4
	Incorrect ignition timing	Adjust
	Loose spark pług	Tighten
	Too lean air/fuel mixture	Adjust