Ch. 4 FUEL SYSTEM
4-9
Adjustment of Idle Speed
Caution
Air screw was set at factory so no adjustment
is needed. Note the number of turns it takes
to screw it all the way in for ease of
installation.
The parking brake is located on the right
hand lever and must be used to stop the ATV
to perform the adjustments.
Use the tachometer in speedometer when
adjusting engine RPM.
Screw in air adjustment screw gently then back up
to standard turns.
Standard turns: 2 turns
Warm up engine; adjust the throttle stopper wire
of throttle valve to standard RPM.
Idle speed rpm: 1500 ± 100 rpm
Connect the hose of exhaust analyzer to exhaust
front end. Press test key on the analyzer.
Adjust the pilot screw and read CO reading on the
analyzer.
CO standard value: 0.8~1.2 %
Accelerate in gradual increments; make sure rpm
and CO value are in standard value after engine
running in stable. If rpm and CO value fluctuated
repeat the procedures described above for
adjusting to standard value.
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