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 playVehicle identification number
The frame serial number or V.I.N. (Vehicle identification
number) “a” is stamped on the right side of the steering
head tube. The engine serial number “b” is located on
the lower crankcase. These numbers are required
especially for registering the machine and ordering
spare parts.
...
Cushion rod bearing removal and installation
Removal
Remove the cushion rod. Refer to “cushion rod removal and installation”
.
Remove the cushion rod bearing with the special
tool.
Special tool
(a):
09921–20240 (bearing remover set)
Installation
Caution
the removed bearings must be replaced with
new on ...
Cooling fan inspection
Cooling fan operating temperature
standard
(on → off): approx. 100 ?‹C (212 ƒ‹f)
(off → on): approx. 105 ?‹C (221 ƒ‹f)
Inspect the cooling fan in the following procedures:
disconnect the cooling fan motor coupler (1).
Test the cooling fan motor for load ...