Yamaha R1 2003 User Manual

9 - 3
TRBL
SHTG
POOR MEDIUM-AND-HIGH-SPEED PERFORMANCE/
FAULTY GEAR SHIFTING/FAULTY CLUTCH
EAS00848
POOR MEDIUM-AND-HIGH-SPEED PERFORMANCE
Refer to “STARTING FAILURES”.
ENGINE
Air filter
• Clogged air filter element
FUEL SYSTEM
Fuel pump
• Faulty fuel pump
EAS00850
FAULTY GEAR SHIFTING
SHIFTING IS DIFFICULT
Refer to “CLUTCH DRAGS”.
SHIFT PEDAL DOES NOT MOVE
Shift shaft
• Improperly adjusted shift rod
• Bent shift shaft
Shift drum and shift forks
• Foreign object in a shift drum groove
• Seized shift fork
• Bent shift fork guide bar
Transmission
• Seized transmission gear
• Foreign object between transmission gears
• Improperly assembled transmission
JUMPS OUT OF GEAR
Shift shaft
• Incorrect shift pedal position
• Improperly returned stopper lever
Shift forks
• Worn shift fork
Shift drum
• Incorrect axial play
• Worn shift drum groove
Transmission
• Worn gear dog
EAS00851
FAULTY CLUTCH
CLUTCH SLIPS
Clutch
• Improperly assembled clutch
• Improperly adjusted clutch cable
• Loose or fatigued clutch spring
• Worn friction plate
• Worn clutch plate
Engine oil
• Incorrect oil level
• Incorrect oil viscosity (low)
• Deteriorated oil
CLUTCH DRAGS
Clutch
• Unevenly tensioned clutch springs
• Warped pressure plate
• Bent clutch plate
• Swollen friction plate
• Bent clutch push rod
• Broken clutch boss
• Burnt primary driven gear bushing
• Match marks not aligned
Engine oil
• Incorrect oil level
• Incorrect oil viscosity (high)
• Deteriorated oil

Yamaha R1 2003 Specifications

General

Compression Ratio	11.8:1
Fuel System	Fuel injection
Ignition	Digital TCI
Transmission	6-speed
Final Drive	Chain
Front Tire	120/70-ZR17
Rear Tire	190/50-ZR17
Wheelbase	1, 395 mm
Seat Height	835 mm
Width	720 mm
Ground Clearance	135 mm
Front Suspension	43mm telescopic fork
Rear Suspension	Single shock
Front Brakes	Dual 320 mm discs
Rear Brakes	220 mm disc, single-piston caliper
Fuel Capacity	18 L
Maximum Power	152 hp @ 10, 500 rpm
Maximum Torque	106 Nm (78 lb-ft) @ 10, 500 rpm
Engine Type	Liquid-cooled, 4-stroke, DOHC, 20-valve, inline-four
Length	2, 060 mm