Abnormal Drive Train Noise:
Clutch noise:
Weak or damaged damper
Clutch housing/friction plate clearance excessive
Clutch housing gear worn
Transmission noise:
Bearings worn
Transmission gears worn or chipped
Metal chips jammed in gear teeth
Engine oil insufficient
Drive chain noise:
Drive chain adjusted improperly
Chain worn
Rear and/or engine sprocket worn
Chain lubrication insufficient
Rear wheel misaligned
Abnormal Frame Noise:
Front fork noise:
Oil insufficient or too thin
Spring weak or broken
Rear shock absorber noise:
Shock absorber damaged
Disc brake noise:
Pad installed incorrectly
Pad surface glazed
Disc warped
Caliper trouble
Other noise:
Bracket, nut, bolt, etc. not properly mounted or
tightened
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