Inspect the radiator cap in the following procedures:

If the radiator cap does not hold the pressure for at least 10 seconds, replace it with a new one.
Radiator cap release pressure 93 – 123 kpa (0.9 – 1.2 Kgf/cm2, 13.2 – 17.5 Psi)
Cooling circuit inspection
Radiator inspection and cleaningOil jet removal and installation
Piston cooling oil jet
Removal
Remove the engine assembly. Refer to “engine assembly removal” in
section 1d .
Remove the crankshaft assembly. Refer to “engine
bottom side disassembly” in section 1d (page 1d-
49).
Remove the piston cooling oil jets (1) from the upper
cra ...
Throttle body removal and installation
Removal
Remove the side cowlings. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” .
Remove the clamps (1).
Disconnect the iap sensor (2) from the vacuum
...
Diagnostic information and procedures
Drive chain and sprocket symptom diagnosis
Condition
Possible cause
Correction / reference item
Noisy drive chain
Worn sprocket
Replace
Worn drive chain
Replace
Stretched drive chain
Replace
Too large drive chain slack
Adju ...