CHAPTER 3C ENGINE 100/125/150/200 SERVICE MANUAL09.0
CHAPTER 3C ENGINE PAGE.3C - 4 -
NOTE:
Since the crankshaft is equipped with a
decompression, the fan cannot be rotated
counterclockwise, or it is impossible to adjust the
valve.
3. Measure the valve clearance by using a feeler
gauge.
Valve clearance specification:
Intake valve 0.04—0.06mm;
Exhaust valve 0.04—0.06mm
4. To adjust valve clearance, loosen the locknut,
turn the adjuster in or out with valve adjusting
tool until specified clearance is obtained.
Measure the valve clearance once more after
the locknut is tightened.
3.3.4 Carburetor idle adjustment
1. Start the engine and let it warm up for several
minutes.
2. Turn the idling adjusting screw in or out until
specified idling speed is obtained.
3. Idling speed specification: 1700±170rpm
4. If the idling speed is unstable or it is not smooth
when accelerating the throttle slightly, adjust the
fuel quantity adjusting screw, which is better to
be done by professionals.
3.3.5 Transmission oil inspection (for MINI
ATV100/150)
1. Stand the engine on a level surface.
2. Remove the oil filler cap after the engine stops.
3. Check if the oil level reaches the lower edge of
the filing orifice.
4. Always use the same type of oil when refilling.
The type used for this engine: SAE15W/40SG
5. Tighten the oil filler cap.
6. If the oil needs replacing, warm up the engine
and then stop. Remove the drain bolt to drain
the oil. And fill the case with new oil.
7. The oil capacity of a new engine: 110ml The
top filling for replacement: 90ml
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