Adjustment Of Idle Speed - DAELIM ET-250 Service Manual

5-8 Adjustment of Idle Speed

Caution
Ÿ 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.
Ÿ The parking brake must be used to stop the
ATV to perform the adjustments.
Use a tachometer when adjusting engine RPM.
Screw in air adjustment screw gently, then back up to
standard turns.
Standard turns: 1 1/2turns
Warm up engine; adjust the throttle stopper screw of
throttle valve to standard RPM.
Idle speed rpm: 1700 ± 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: 1.0~1.5 %
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.
Parking brake
Throttle valve stopper screw
Air adjustment screw