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 playFuel injector inspection and cleaning
Inspect the fuel injector in the following procedures:
remove the fuel injector. Refer to “throttle body disassembly and
assembly” in section 1d .
Check the fuel injector for evidence of dirt and
contamination. If present, clean and check for
presence of dirt in the fuel lin ...
Front brake master cylinder / brake lever disassembly and assembly
Refer to “front brake master cylinder assembly removal and installation” .
Disassembly
Remove the reservoir cap (1), plate (2), diaphragm
(3) and reservoir tank (4).
Remove the brake light switch (5) and brake lever
(6).
Remove the dust boot (7) and push rod (8).
  ...
Cushion rod inspection
Refer to “cushion rod removal and installation” .
Collar and spacer
Remove the collar and spacer from the cushion rod.
Inspect the collar and spacer for any flaws or other
damage. If any defects are found, replace it with a
new one.
Cushion rod bearing
Insert the collar a ...