Engine; Co Measurement And Vacuum Running Adjustment - Derbi GPR 125 Racing Workshop Manual

CO CO
MEASUREMENT AND VACUUM RUNNING ADJUSTMENT MEASUREMENT AND VACUUM RUNNING ADJUSTMENT
1. Start the engine and leave to warm up for a few minutes.
2. Connect:
-An inductive tachometer to the spark plug lead.
N.B.
THE IDLING REGULATOR IS ACCESSED FROM THE LEFT
HAND SIDE OF THE MACHINE. SEE THE COVER DISMAN-
TLING METHOD IN THE PREVIOUS SECTION.
3. Check:
- Idle speed (standard).
Outside that specified => Adjust.
Turn the no load running screw (1) inwards or outwards un-
til the specified no load running is obtained.
No load running:
1.250 ~ 1.450 rpm
4. Fit:
- the CO meter into the exhaust silencer.
CO concentration:
3,0 ~ 5,0 %
Outside that specified => Adjust.
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