Adjust the engine idle speed periodically on the engine at normal operating temperature.
To adjust the idle speed:

Engine oil and filter change
Throtile cable playBalancer shaft journal bearing removal and
installation
Refer to “engine bottom side disassembly” (page 1d-
49).
Refer to “engine bottom side assembly” .
Removal
Remove the balancer shaft journal bearings (1).
Note
do not remove the bearings (1) unless
absolutely necessary.
Make a note of where the bearings are
r ...
Oil pump inspection
Inspect the oil pump in the following procedures:
remove the oil pump. Refer to “oil pump removal and installation” .
Rotate the oil pump by hand and check that it moves
smoothly. If it does not move smoothly, replace the
oil pump assembly.
Caution
do not attempt t ...
Air cleaner box removal and installation
Removal
Lift and support the fuel tank. Refer to “fuel tank
removal and installation” in section 1g (page 1g-
9).
Remove the air cleaner box cover. Refer to “air cleaner element removal
and installation” .
Remove the air cleaner mounting bolt.
Remove the air clea ...