Maintenance GPS 8500 / GPS 9700
34
3.8 Carburetor Adjustment
Note: Air cleaner must be in place and engine warm when making
adjustments to carburetor.
Only minor adjustments to carburetor are possible. Adjust mixture
screw (b) between limits to obtain best acceleration from idle to full
speed.
Adjust idle speed screw (a) with engine running and auto idle switch
on. Adjust auto idle speed to 2200 rpm.
Note: To avoid excessive vibration and to maintain adequate cooling
ability, do not set the engine auto idle speed lower than 2200 rpm.