CHASSIS
Complaint
Symptom and possible causes
Remedy
Handling feels too
heavy.
1. Steering stem nut overtightened.
2. Broken bearing/race in steering stem.
3. Distorted steering stem.
4. Not enough pressure in tires.
Adjust.
Replace.
Replace.
Adjust.
Wobbly handle.
1. Loss of balance between right and left
suspension.
2. Distorted front fork.
3. Distorted front axle or crooked tire.
Adjust or replace.
Repair or replace.
Replace.
Wobbly front wheel.
1. Distorted wheel rim.
2. Worn front wheel bearings.
3. Defective or incorrect tire.
4. Loose nut on axle.
5. Loose nuts on the rear shock.
6. Worn engine mounting bushing.
7. Loose nuts or bolts for enginge mounting.
Replace.
Replace.
Replace.
Retighten.
Retighten.
Replace.
Tighten.
Front suspension
too soft.
1. Weakened springs.
2. Not enough fork oil.
Replace.
Refill.
Front suspension
too stiff
1. Fork oil too viscous.
2. Too much fork oil.
Replace.
Drain excess oil.
Noisy front
suspension
1. Not enough fork oil.
2. Loose nuts on suspension.
Refill.
Retighten.
Wobbly rear wheel.
1. Distorted wheel rim.
2. Worn-down rear wheel bearings.
3. Defective or incorrect tire.
4. Loose nuts on the rear shock.
5. Worn engine mounting bushing.
6. Loose nuts or bolts for engine mounting.
Replace.
Replace.
Replace.
Replace.
Replace.
Retighten.
Rear suspension too
soft.
1. Weakened spring.
2. Oil leakage of rear shock.
Replace.
Replace.
Noisy rear
suspension
1. Loose nuts on suspension unit.
2. Worn engine mounting bushing.
Retighten.
Replace.
Poor
braking(FRONT)
1. Not enough brake fluid in the reservoir.
2. Air trapped in brake fluid circuit.
3. Pads or linings worn down.
Refill to level
mark.(Disc brake )
Bleed air out.( Disc
brake)
Replace.
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