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 playRear combination light removal and installation
Removal
Remove the frame cover assembly. Refer to “exterior parts removal and
installation” in section 9d .
Remove the clamps (1).
Disconnect the combination light coupler (2).
Remove the rear combination light assembly (3).
Remove the combination light brack ...
Short circuit check (wire harness to ground)
Disconnect the negative (–) cable from the battery.
Disconnect the connectors/couplers at both ends of
the circuit to be checked.
Note
if the circuit to be checked branches to other
parts as shown, disconnect all connectors/
couplers of those parts. Otherwise, diagnos ...
Rear brake master cylinder parts inspection
Refer to “rear brake master cylinder disassembly and assembly” .
Master cylinder
Inspect the master cylinder bore for any scratches or
other damage.
Piston / rubber parts
Inspect the piston surface for any scratches or other
damage.
Inspect the primary cup, secondary cup and dust boot
...