Complaint | Symptom and possible causes | Remedy |
Heavy steering | 1. Overtightened steering stem nut | Adjust. |
2. Broken bearing in steering stem | Replace. | |
3. Distorted steering stem | Replace. | |
4. Not enough pressure in tires | Adjust. | |
Wobbly handlebars | 1. Loss of balance between right and left front forks | Adjust. |
2. Distorted front fork | Repair or replace. | |
3. Distorted front axle or crooked tire | Replace. | |
4. Loose steering stem nut | Adjust. | |
5. Worn or incorrect tire or wrong tire pressure | Adjust or replace. | |
6. Worn bearing/race in steering stem | Replace. | |
Wobbly front wheel | 1. Distorted wheel rim | Replace. |
2. Worn front wheel bearings | Replace. | |
3. Defective or incorrect tire | Replace. | |
4. Loose axle or axle pinch bolt | Retighten. | |
5. Incorrect front fork oil level | Adjust. | |
6. Incorrect front wheel weight balance | Adjust. | |
Front suspension too soft | 1. Weakened springs | Replace. |
2. Not enough fork oil | Replenish. | |
3. Wrong weight fork oil | Replace. | |
Front suspension too stiff | 1. Too viscous fork oil | Replace. |
2. Too much fork oil | Drain excess oil. | |
3. Bent front axle | Replace. | |
Noisy front suspension | 1. Not enough fork oil | Replenish. |
2. Loose bolts on suspension | Retighten. | |
Wobbly rear wheel | 1. Distorted wheel rim | Replace. |
2. Worn rear wheel bearing or swingarm bearings | Replace. | |
3. Defective or incorrect tire | Replace. | |
4. Worn swingarm and rear suspension bearings | Replace. | |
5. Loose nuts or bolts on rear suspensions | Retighten. | |
Rear suspension too soft | 1. Weakened spring of shock absorber | Replace. |
2. Leakage of oil or gas shock absorber | Replace. | |
3. Improperly set rear spring pre-load adjuster | Adjust. | |
Rear suspension too stiff | 1. Bent shock absorber shaft | Replace. |
2. Bent swingarm pivot shaft | Replace. | |
3. Worn swingarm and rear suspension bearings | Replace. | |
4. Improperly set rear spring pre-load adjuster | Adjust. | |
Noisy rear suspension | 1. Loose nuts or bolts on rear suspension | Retighten. |
2. Worn swingarm and suspension bearings | Replace. |