HONDA CRF50F - Manual (Page 66)

unleaded
86 (or higher) Type
Pump Octane Number
58
Fuel Recommendation
Fuel
Servicing Your Honda
Saf ety Precautions Refer to on page . If pinging or spark knock occurs at a steady
engine speed under normal load, change brands
of gasoline. If pinging or spark knock persists,
consult your dealer.
Your engine is designed to use any unleaded
gasoline that has a pump octane number of 86
or higher. Gasoline pumps at service stations
normally display the pump octane number. For
information on the use of oxygenated fuels, see
page
.
Use of lower octane gasoline can cause
persistent ‘‘pinging’’ or ‘‘spark knock’’ (a
louder rapping noise) which, if severe, can lead
to engine damage. (Light pinging experienced
while operating under a heavy load, such as
climbing a hill, is no cause for concern.)
Use only unleaded fuel in your Honda. If you
ride your Honda in a country where leaded fuel
might be available, take precautions to use only
unleaded fuel.
Never use stale or contaminated gasoline or an
oil/gasoline mixture. Avoid getting dirt, dust,
or water in the fuel tank.
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