Yamaha 2009 YZF-R1 (Y) User Manual

FRONT FORK
4-64
EAS23010
CHECKING THE FRONT FORK LEGS
The following procedure applies to both of the
front fork legs.
1. Check:
• Inner tube “1”
• Outer tube “2”
Bends/damage/scratches → Replace.
WARNING
EWA13650
Do not attempt to straighten a bent inner
tube as this may dangerously weaken it.
2. Measure:
• Spring free length “a”
Out of specification → Replace.
3. Check:
• Damper rod “1”
Damage/wear → Replace.
Obstruction → Blow out all of the oil pas-
sages with compressed air.
ECA14200
• The front fork leg has a built-in damper
adjusting rod and a very sophisticated
internal construction, which are particu-
larly sensitive to foreign material.
• When disassembling and assembling the
front fork leg, do not allow any foreign
material to enter the front fork.
4. Check:
• Cap bolt “1”
• Cap bolt collar projections “2”
Cracks/damage → Replace.
EAS14B1008
ASSEMBLING THE FRONT FORK LEGS
The following procedure applies to both of the
front fork legs.
WARNING
EWA14B1010
• Make sure the oil levels in both front fork
legs are equal.
• Uneven oil levels can result in poor han-
dling and a loss of stability.
TIP
• When assembling the front fork leg, be sure
to replace the following parts:
- Oil seal
- Dust seal
-O-ring
• Before assembling the front fork leg, make
sure all of the components are clean.
1. Install:
• Damper rod assembly “1”
• Inner tube “2”
ECA14B1006
Allow the damper rod assembly to slide
slowly down the inner tube “2”. Be careful
not to damage the inner tube.
Fork spring free length
271.5 mm (10.69 in)
Limit
266.1 mm (10.48 in)

Yamaha 2009 YZF-R1 (Y) Specifications

General

Bore x Stroke	78.0 mm x 52.2 mm
Compression Ratio	12.7:1
Fuel System	Fuel injection with YCC-T and YCC-I
Ignition	TCI: Transistor Controlled Ignition
Transmission	6-speed w/multiplate slipper clutch
Final Drive	Chain
Front Tire	120/70-ZR17
Rear Tire	190/55-ZR17
Seat Height	835 mm
Wet Weight	206 kg
Engine Type	Liquid-cooled, 4-stroke, DOHC, inline 4-cylinder
Front Suspension	43 mm inverted fork, fully adjustable
Rear Suspension	Single shock, fully adjustable
Front Brakes	Dual 310 mm discs, radial-mount 6-piston calipers
Rear Brakes	220 mm disc, single-piston caliper
Dimensions (L x W x H)	2, 070 mm x 715 mm x 1, 130 mm
Wheelbase	1415 mm
Fuel Capacity	18 L