Yamaha YZ450FF 1SL-28199-11 Owner's Service Manual page 274

HANDLING NOTE
EAS1SL5298
EWA1DX1007
WARNING
If coolant seems hot, do not remove the ra-
diator cap.
EAS1SL5299 CHECKING THE RADIATOR
1. Check:
• Radiator fins "1"
Obstructions  Clean.
Apply compressed air to the rear of the radi-
ator.
Damage  Repair or replace.
TIP
Correct any flattened fins with a thin, flat-head
screwdriver.
2. Check:
• Radiator hoses
• Radiator pipes
Crack/damage  Replace.
6-3
RADIATOR