2005 YAMAHA YFZ450 fuel reserve

4-23
EBU00930
Fuel cock
The fuel cock supplies fuel from the fuel tank to the
carburetor.
The fuel cock has three positions.
OFF: With the lever in this position, fuel will not
flow. Always turn the lever to this position
when the engine is not running.
ON: With the lever in this position, fuel flows to
the carburetor. Normal riding is done with
the lever in this position.
RES: This indicates reserve. If you run out of fuel
while riding, turn the lever to this position.
THEN FILL THE FUEL TANK AT THE
FIRST OPPORTUNITY. After refuelling, re-
turn the fuel cock lever to the “ON” position.
U5TG61.book Page 23 Friday, April 2, 2004 11:28 AM

5-9
EBU14571
Fuel
Make sure there is sufficient gasoline in the tank.NOTE:_ 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:
PREMIUM UNLEADED GASOLINE ONLY
For Europe:
PREMIUM UNLEADED GASOLINE
ONLY with a research octane number of
97 or higher
Fuel tank capacity:
Total:
10.0 L
Reserve:
1.9 L
U5TG61.book Page 9 Friday, April 2, 2004 11:28 AM

10-3
Radiator capacity (including all routes): 1.30 L
Air filter: Wet element
Fuel:
Type
Tank capacity
Reserve amountPREMIUM UNLEADED GASOLINE ONLY
For Europe:
PREMIUM UNLEADED GASOLINE ONLY with
a research octane number of 97 or higher
10.0 L
1.9 L
Carburetor:
Type
× quantity
ManufacturerFCR39H
× 1
KEIHIN
Spark plug:
Type/manufacturer
GapCR8E/NGK
0.7–0.8 mm
Clutch:
Type
OperationWet, multiple-disc
Left hand operation
Transmission:
Primary Reduction System
Primary Reduction Ratio
Secondary Reduction System
Secondary Reduction Ratio
Transmission type
OperationSpur gear
62/22 (2.818)
Chain drive
38/14 (2.714)
Constant mesh, 5-speed forward
Left foot operation MODEL YFZ450
U5TG61.book Page 3 Friday, April 2, 2004 11:28 AM