Yamaha ttr230 User Manual

PROB
?
8-4
GEAR SHIFTING DIFFICULTY/CLUTCH PROBLEMS
GEAR SHIFTING DIFFICULTY
Shift shaft
Shifting fork/forks
Transmission
POSSIBLE CAUSE
• Locked shaft
• Obstructed channels
• Damaged fork
• Locked guide bar
• Damaged clutch
• Dirt
• Improperly mounted transmission
UNSTABLE GEAR
Shift shaft
Fork
Shifting fork
Transmission
POSSIBLE CAUSE
• Worn shaft stem
• Improper stop stem return
• Worn fork
• Improper thrust washer clearance
• Worn shifting fork channel
• Worn clutch claw
SLIPPING CLUTCH
Clutch
Engine oil
POSSIBLE CAUSE
• Loose clutch spring
• Fatigue in the clutch spring
• Worn clutch disc
• Worn separator
• Improperly mounted clutch
• Low oil level
• Low viscosity oil
• Deteriorated oil
CLUTCH PROBLEMS

Yamaha ttr230 Specifications

General

Engine Type	223cc air-cooled SOHC 4-stroke; 2 valves
Bore x Stroke	70.0mm x 58.0mm
Compression Ratio	9.5:1
Ignition	CDI
Transmission	Constant-mesh 6-speed; multiplate wet clutch
Final Drive	Chain
Rear Suspension	Single shock; 8.7-in travel
Front Tire	80/100-21
Rear Tire	100/100-18
Length	81.3 in
Width	31.5 in
Seat Height	34.3 in
Wheelbase	54.5 in
Ground Clearance	11.6 in
Front Suspension	Telescopic fork
Rear Brake	Drum