TROUBLESHOOTING
9-8
EAM30512
TROUBLESHOOTING OF COOLING SYSTEM
Symptom
Possible cause
Actions
Overheating
Carbon buildup in piston head and
combustion chamber
Clean the piston head and com-
bustion chamber.
Clogged engine cooling water
passages
Check and clean the engine cool-
ing water passages.
Damaged or leaking radiator
Replace the radiator.
Faulty radiator cap
Replace the radiator cap.
Clogged radiator fin
Clean the radiator fin.
Bent or damaged radiator fin
Repair the radiator fin or replace
the radiator.
Damaged or faulty water pump
Replace the water pump.
Damaged hoses or pipes
Replace the hose or pipe.
Improperly connected hoses or
pipes
Connect the hoses and pipes
properly.
Clogged air filter element
Clean or replace the air filter ele-
ment.
Brake drags
Check the brake system and
repair or replace faulty parts as
necessary.
Incorrect spark plug gap
Adjust to the specified spark plug
gap.
Incorrect spark plug heat range
Replace the spark plug with the
one of the specified type.
Noise from water pump
Contact between the water pump
housing cover and impeller
Disassemble the water pump and
replace faulty parts.
Worn water pump housing bearing Replace the water pump housing
bearing.
Содержание YZ250 2022
Страница 5: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Страница 8: ......
Страница 10: ......
Страница 38: ...MOTORCYCLE CARE AND STORAGE 1 26...
Страница 54: ...CABLE ROUTING DIAGRAM 2 15 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view...
Страница 56: ...CABLE ROUTING DIAGRAM 2 17 Frame and engine left side view...
Страница 58: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view...
Страница 60: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view 0 mm 0 in 0 mm 0 in...
Страница 62: ...CABLE ROUTING DIAGRAM 2 23 Rear brake right side view...
Страница 64: ...CABLE ROUTING DIAGRAM 2 25...
Страница 92: ...ELECTRICAL SYSTEM 3 26...
Страница 160: ...CHAIN DRIVE 4 66...
Страница 193: ...CLUTCH 5 31 2 1...
Страница 233: ...ELECTRICAL COMPONENTS 8 6 EAM30289 CHECKING THE SWITCHES 1 1 Engine stop switch...
Страница 254: ...TROUBLESHOOTING 9 13...
Страница 261: ...ENGINE 10 6...
Страница 274: ......