Suzuki RM250 Owner's Service Manual page 43

3-4 TROUBLESHOOTING
Complaint
Overheating
Excessive coolant level
decrease
Clutch does not disen-
gage
Clutch slipping
Transmission does not
shift
Transmission gears
jump out
Gearshift lever does
not return
Possible Cause
Low engine coolant level
Engine coolant leak
Too lean air/fuel mixture
Incorrect ignition timing
Water pump malfunction
Cylinder head carbon deposits
Exhaust pipe carbon deposits
Improper spark plug heat range
Fuel deterioration
Clutch slipping
Radiator cap loose
Radiator fins damaged
Radiator hose cracked or damaged
Loose radiator hose connection
Radiator cracked or damaged
Water pump cover mating surface damage
Water pump cover crack
Water pump cover gasket damage
Water seal wear or damage
Radiator cap seal damage
Incorrect radiator cap valve pressure
Cylinder or cylinder head cracked
Cylinder or cylinder head O-rings damage
Clutch lever play maladjustment
Clutch spring damage
Clutch plates distortion
Tip of clutch release camshaft worn
Clutch cable play maladjustment
Weakened clutch spring
Clutch pressure plate wear
Clutch plate distortion
Clutch plates worn
Tip of clutch release camshaft worn
Gearshift cam damage
Gearshift fork distortion
Gearshift pawl wear
Gearshift fork groove wear or damage
Gearshift fork distortion or wear
Gearshift cam stopper damage
Transmission gear claw damage
Weakened gearshift return spring
Gearshift lever sticking
Remedy
Replenish
Repair
Adjust
Adjust
Adjust or replace
Clean
Clean or replace
Replace
Replace
Adjust or replace
Tighten
Repair or replace
Replace
Repair
Repair or replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Adjust
Replace
Replace
Replace
Adjust
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Repair or replace