Troubleshooting - KYMCO MXU 450i Service Manual

Troubleshooting

Problem: Suspension too soft
Condition
1. Spring(s) weak
2. Shock absorber damaged
3. Shock absorber preload too low
Problem: Suspension too stiff
Condition
1. A-arm-related bushings worn
2. Shock absorber preload too high
Problem: Suspension noisy
Condition
1. Cap screws (suspension system) loose
2. A-arm-related bushings worn
Problem: Rear wheel oscillation
Condition
1. Rear wheel hub bearings worn - loose
2. Tires defective - incorrect
3. Wheel rim distorted
4. Wheel hub cap screws loose
5. Auxiliary brake adjusted incorrectly
6. Rear suspension arm-related bushing worn
7. Rear shock absorber damaged
8. Rear suspension arm nut loose
7-6
Remedy
1. Replace spring(s)
2. Replace shock absorber
3. Adjust shock absorber preload
Remedy
1. Replace bushing
2. Adjust shock absorber preload
Remedy
1. Tighten cap screws
2. Replace bushings
Remedy
1. Replace bearings
2. Replace tires
3. Replace rim
4. Tighten cap screws
5. Adjust brake
6. Replace bushing
7. Replace shock absorber
8. Tighten nut