GENERAL INFORMATION
1.17
THROTTLE OPERATION
Check for smooth throttle opening and closing in all han-
dlebar positions. Throttle lever operation should be
smooth and lever must return freely without binding.
1. Start the engine and let it idle.
2. Turn handlebars from full right to full left. If idle speed
increases at any point in the turning range, inspect
throttle cable routing and condition.
3. Replace the throttle cable if worn, kinked, or damaged.
AIR SCREW ADJUSTMENT
1. Turn carburetor air screw in (clockwise) until lightly
seated. Back screw out the specified number of turns.
2. Warm up the engine to operating temperature (about
10 minutes).
3. Set idle speed to 600 RPM.
NOTE: Adjusting the air screw may affect idle speed.
Always check throttle cable freeplay after adjusting idle
speed and adjust if necessary.
4. Turn the screw in (to richen) or out (to lean) the
mixture. Adjust air screw for best throttle response
and smooth idle.
5. Re-adjust idle speed if necessary.
Air Screw Adjustment:
1.5 Turns Out from Lightly Seated
Idle Speed
Screw
Air Screw
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