Service Manual — page 39 of 715

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PERIODIC MAINTENANCE 2-17
Periodic Maintenance Procedures
Idle Speed Inspection
• Start the engine and warm it up thoroughly.
• With
  [A].
        the engine idling, turn the handlebars to both sides

    If handlebars movement changes the idle speed, the
    throttle cables may be improperly adjusted or incorrectly
    routed, or damaged. Be sure to correct any of these
    conditions before riding (see Throttle Control System
    Inspection and Cable, Wire, and Hose Routing section in
    the Appendix chapter).
                             WARNING
    Operation with improperly adjusted, incorrectly
    routed or damaged cables could result in an unsafe
    riding condition. Follow the service manual to be
    make sure to correct any of these conditions.

• Check    the idle speed.
  If the idle speed is out of specified range, adjust it.
    Idle Speed
       Standard:   1 100 ±50 r/min (rpm)

Idle Speed Adjustment
• Start  the engine and warm it up thoroughly.
•○Turn  the adjusting screw [A] until the idle speed is correct.
  Open and close the throttle a few times to make sure that
    the idle speed is within the specified range. Readjust if
    necessary.

Throttle Control System Inspection
• Check that the throttle grip [A] moves smoothly from full
  open to close, and the throttle closes quickly and com-
    pletely by the return spring in all steering positions.
    If the throttle grip does not return properly, check the throt-
    tle cable routing, grip free play, and cable damage. Then
    lubricate the throttle cable.
•   Check the throttle grip free play [B].
    Throttle Grip Free Play
      Standard: 2 ∼ 3 mm (0.08 ∼ 0.12 in.)

    If the free play is incorrect, adjust the throttle cable as
    follows.
•   Loosen the locknuts [A] [B].
•   Screw both throttle cable adjusters [C] [D] to give the
    throttle grip plenty of play.
•   Turn the decelerator cable adjuster [D] until there is no
    play when the throttle grip play completely closed.
•   Tighten the locknut [B].
•   Turn the accelerator cable adjuster [C] until 2 ∼ 3 mm
    (0.08 ∼ 0.12 in.) of throttle grip play is obtained.
•   Tighten the locknut [A].
    If the free play can not be adjusted with the adjusters,
    replace the cable.