Yamaha R1 User Manual

Periodic maintenance and adjustment
8-30
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EAU23273
Checking the front fork
The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion. WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
NOTICE
ECA10591
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU23285
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Raise the front wheel off the
ground. (See page 8-35.)
WARNING! To avoid injury, se-
curely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
2CR-9-21.book 30 ページ ２０１５年９月２日 水曜日 午後２時２５分

Yamaha R1 Specifications

General

Bore x Stroke	79.0 mm x 50.9 mm
Compression Ratio	13.0:1
Front Tire	120/70ZR17
Wheelbase	55.3 in
Seat Height	33.7 in
Fuel Capacity	4.5 gal
Curb Weight	448 lb
Width	27.2 in
Height	45.3 in
Fuel Delivery	Fuel Injection
Transmission	6-speed
Front Suspension	43mm KYB inverted fork, fully adjustable
Rear Suspension	KYB single shock; fully adjustable
Front Brakes	Dual 320mm hydraulic disc; ABS
Rear Brakes	220mm disc; single-piston caliper; ABS
Torque	83 lb-ft
Engine Type	Liquid-cooled, 4-stroke, DOHC, 4-valve, inline 4-cylinder