Air Suction System
Air Suction System Damage Inspection
Pull the vacuum switch valve hose [A] out of the air
Start the engine and run it at idle speed.
Plug the vacuum switch valve hose end with your finger
and feel vacuum pulsing in the hose.
If there is no vacuum pulsation, check the hose line for
leak. If there is no leak, check the vacuum switch valve
or air suction valve (see Vacuum Switch Valve Test, Air
Suction Valve Inspection in the Engine Top End chapter).
Clutch Operation Inspection
Pull the clutch lever just enough to take up the free play
Measure the gap between the lever and the lever holder.
If the gap is too wide, the clutch may not release fully. If
the gap is too narrow, the clutch may not engage fully. In
either case, adjust it.
Clutch Lever Free Play
Standard: 2 ∼ 3 mm (0.08 ∼ 0.12 in.)
To avoid a serious burn, never touch the engine or
exhaust pipe during clutch adjustment.
Turn the adjuster [A] so that 4 ∼ 6 mm (0.16 ∼ 0.24 in.) [B]
of threads is visible.
Remove the right center fairing (see Center Fairing Re-
moval in the Frame chapter).
Slide the dust cover [A] at the clutch cable lower end out
Loosen both adjusting nuts [B] at the clutch cover as far
as they will go.
Pull the clutch outer cable [C] tight and tighten the adjust-
ing nuts against the bracket [D].
Slip the rubber dust cover back onto place.
Turn the adjuster at the clutch lever until the free play is
PERIODIC MAINTENANCE 2-29