LIFAN Power USA 173F-R Manual page 14

FUEL AND FUEL TANK
Fuel
The engine must apply unleaded gasoline with an octane number over 86. Using unleaded gasoline will decrease
the possibility of producing carbon deposit and will prolong the engine's service life. Never apply used or
polluted gasoline or a mixture of gasoline with engine oil. Make sure the fuel is free of dirt and water.
Gasoline Containing Alcohol
If you decide to use a gasoline containing alcohol (fuel blend), be sure its octane rating is at least as high as high
as that recommended by the company. There are two types of"gasohol". One contains ethanol, and the other
contains methanol. Neither gasoline containing more than 10% ethanol nor 5% methanol is allowed to be used. If
methanol content in the fuel blend exceeds 5%, it may bring bad effect on the engine performance, besides, it
may damage metals, rubber and plastic parts.
CAUTION:
If "spark knock" or "pinking"occurs
at a steady speed under normal load, change
brand of gasoline; if such phenomena still
happen, consult your dealer for help, otherwise
the engine may be damaged.
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