Cleveland CycleWerks ACE 250CC, User Manual, Page: 21 / 57

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Note!
If the engine produces a pinging noise, it may be caused by using of improper
fuel, or too low a fuel grade. Stop riding and replace with correct fuel
immediately. Riding in this condition will irreparably damage the motor.
Do not use Ethanol / Do not use Methanol . This is not compatible fuel.
Note! Most gasoline does container some ethanol in it >10%, this is OK, but
not ideal to the longevity of the motor.
●
If ethanol gasoline is exposed to water and humidity, the ethanol may
separate, resulting in decrease of gasoline octane number.
●
Never store a motorcycle with ethanol in the tank or carburetor.
Lubricants:
(Please refer to Regular Maintenance Table)
Use high quality full synthetic motorcycle specific 4-­‐stroke engine oil to
prolong engine life. Engine oil shall be SF or SG product in API classification.
Engine oil of proper viscosity shall be used according to your local air
temperature. There are three viscosity levels suitable for the engine,
SAE10W-­‐40, SAE15W-­‐50, SAE20W-­‐50 :
Note
：
Oil volume is 850ml for replacement or 1300ml after overhaul.
The quality of engine oil is a major factor affecting the service life of engine.
Replace engine oil according to the maintenance period stated in
maintenance table (please refer to Page 19). When driving in dusty area,
engine oil shall be replaced more frequently than the stipulations in the
maintenance table.
Warning:
Inferior lubricant may cause irretrievable loss to the engine and seriously
shorten the service life of engine.