5-9
EBU00998
Fuel
Make sure there is sufficient gasoline in the tank.NOTE:(for Europe only)
If knocking or pinging occurs, use a different brand
of gasoline or higher octane grade. CAUTION:
Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
rings, as well as to the exhaust system. Recommended fuel:
For Europe: Regular unleaded gasoline only
with a research octane number of 91 or high-
er.
For Australia: Unleaded gasoline only
Fuel tank capacity:
Total: 12 L
Reserve: 1.6 L
U4XE64.book Page 9 Thursday, May 30, 2002 1:49 PM
10-3
Air filter: Dry type element
Fuel:
Type For Europe: Regular unleaded gasoline only
For Australia: Unleaded gasoline only
Tank capacity 12 L
Reserve amount 1.6 L
Carburetor:
Type / manufacturer BST34/1/MIKUNI
Spark plug:
Type / manufacturer DR7EA / NGK
Gap 0.6–0.7 mm
Clutch type: Wet, centrifugal automatic
Transmission:
Primary reduction system Spur gear
Primary reduction ratio 73/22 (3.318)
Secondary reduction system Shaft drive
Secondary reduction ratio 19/18
× 46/11 (4.414)
Transmission type Constant mesh, 5-speed forward, 1-speed reverse
Operation Left foot operationModel YFM250X
U4XE64.book Page 3 Thursday, May 30, 2002 1:49 PM
