Yamaha YZF-R25 User Manual

6
OPERATION AND IMPORTANT RIDING POINTS
6-3
NOTICE
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Even with the transmission in
the neutral position, do not
coast for long periods of time
with the engine off, and do not
tow the motorcycle for long
distances. The transmission is
properly lubricated only when
the engine is running.
Inadequate lubrication may
damage the transmission.
Always use the clutch while
changing gears to avoid dam-
aging the engine, transmission,
and drive train, which are not
designed to withstand the
shock of forced shifting.
Tips for reducing fuel con-
sumption
Fuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
Shift up swiftly, and avoid high
engine speeds during acce-
leration.
Do not rev the engine while
shifting down, and avoid high
engine speeds with no load on the
engine.
Turn the engine off instead of
letting it idle for an extended
length of time (e.g., in traffic jams,
at traffic lights or at railroad
crossings).
Engine break-in
There is never a more important
period in the life of your engine than
the period between 0 and 1600 km
(1000 mi). Fort his reason, you should
read the following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts
in the engine wear and polish
themselves to the correct operating
clearances. During this period,
prolonged full-throttle operation or any
condition that might result in engine
overheating must be avoided.
0–1000 km (0–600 mi)
Avoid prolonged operation above
7000r/min. NOTICE: After 1000 km
(600mi) of operation, the engine oil
must be changed and the oil filter
cartridge or element replaced.
1000–1600 km (600–1000 mi)
Avoid prolonged operation above
8400r/min.

Yamaha YZF-R25 Specifications

General

Engine Type	Liquid-cooled, 4-stroke, DOHC, 4-valve
Displacement	249 cc
Bore x Stroke	60.0 mm x 44.1 mm
Compression Ratio	11.6:1
Fuel System	Fuel Injection
Ignition System	TCI (Transistor Controlled Ignition)
Transmission	Constant mesh, 6-speed
Front Suspension	Telescopic fork
Rear Suspension	Swingarm
Overall Length	2, 090 mm
Overall Width	720 mm
Overall Height	1, 135 mm
Seat Height	780 mm
Wheelbase	1, 380 mm
Ground Clearance	160 mm
Wet Weight	166 kg
Frame Type	Diamond
Lubrication System	Wet sump
Starter System	Electric
Final Drive	Chain
Maximum Power	26.5 kW (36 PS) @ 12, 000 rpm
Front Brake	Single disc
Rear Brake	Single disc
Front Tire	110/70-17
Rear Tire	140/70-17
Clutch Type	Wet, multi-plate
Maximum Torque	22.6 Nm @ 10, 000 rpm
Fuel Tank Capacity	14.3 liters