Fuel System - Honda crf250r 2012 Owner's Manual

Fuel System

Refer to Safety Precautions on page 23.
Fuel
Type Unleaded
Pump Octane Number 91 (or higher)
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.
Your engine is designed to use any unleaded
gasoline that has a pump octane number of 91 or
higher. Gasoline pumps at service stations
normally display the pump octane number. For
information on the use of oxygenated fuels, see
page 153.
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.)
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.
Never use stale or contaminated gasoline. Avoid
getting dirt, dust or water in the fuel tank.
Dirty fuel will clog the fuel pump filter and can
damage the fuel pump. Commercially available
fuel straining devices may reduce the occurrence
of dirty fuel.
40
Servicing Your Honda
Refueling Procedure
1. To open the fuel fill cap (1), pull the breather
tube (2) out of the steering stem nut (3). Turn
the fuel fill cap counterclockwise and remove
it.
(2)
(3)
(1) fuel fill cap (3) steering stem nut
(2) breather tube
2. Add fuel until the level reaches the bottom of
the filler neck.
Fuel Tank Capacity: 1.5 US gal (5.7R)
Be careful not to damage the fuel pump while
filling the fuel tank.
Avoid overfilling the tank. There should be no
fuel in the filler neck.
WARNING
Gasoline is highly flammable and
explosive. You can be burned or
seriously injured when handling fuel.
• Stop the engine and keep heat, sparks
and flame away.
• Handle fuel only outdoors.
• Wipe up spills immediately.
3. Close the fuel fill cap and insert the breather
tube in the steering stem nut.
(1)
Fuel Line
1. Hang the fuel tank to the left side of the frame
(page 34).
2. Remove the fuel quick connect fitting cover
(1).
3. Check the fuel line (2) for cracks,
deterioration, damage or leakage. Replace the
fuel line, if necessary.
4. Install the fuel quick connect fitting cover.
5. Install the fuel tank (page 35).
(1)
(1) fuel quick connect fitting cover
(2) fuel line
(2)