HYOSUNG Aquil GV650 Service Manual page 196

8-7 SERVICING INFORMATION
◉ CHASSIS
Complaint
Steering feels too
heavy or stiff.
Steering
oscillation.
Wobbling
front wheel.
Front suspension
too soft.
Front suspension
too stiff.
Noisy front
suspension.
Wobbling
rear wheel.
Rear suspension
too soft.
Rear suspension
too stiff.
Noisy rear
suspension.
Symptom and possible causes
1. Steering stem nut overtightened.
2. Worn bearing or race in steering stem.
3. Distorted steering stem.
4. Not enough pressure in tires.
1. Loss of balance between right and left front suspensions.
2. Distorted front fork.
3. Distorted front axle or crooked tire.
4. Loose steering stem nut.
5. Worn or incorrect tire or wrong tire pressure.
6. Worn bearing/race in steering stem.
1. Distorted wheel rim.
2. Worn-down wheel bearings.
3. Defective or incorrect tire.
4. Loosen nut on axle.
5. Incorrect front fork oil level.
6. Incorrect front wheel weight balance.
1. Weakened springs.
2. Not enough fork oil.
3. Wrong viscous fork oil.
4. Improperly set front fork damping force adjuster.
1. Fork oil too viscous.
2. Too much fork oil.
3. Bent front axle.
4. Improperly set front fork damping force adjuster.
1. Not enough fork oil.
2. Loosen nuts on suspension.
1. Distorted wheel rim.
2. Worn-down rear wheel bearing.
3. Defective or incorrect tire.
4. Loose nut on axle.
5. Worn swingarm bushing or bearing.
6. Loosen nut on the rear shock.
1. Weakened springs.
2. Rear suspension adjuster improperly set.
1. Rear suspension adjuster improperly set.
2. Worn swingarm bushing or bearing.
1. Loosen nuts on suspension.
2. Worn swingarm bushing or bearing.
Remedy
Adjust.
Replace.
Replace.
Adjust.
Replace.
Repair or replace.
Replace.
Adjust.
Adjust or replace.
Replace.
Replace.
Replace.
Replace.
Retighten.
Adjust.
Adjust.
Replace.
Refill.
Replace.
Adjust.
Replace.
Drain excess oil.
Replace.
Adjust.
Refill.
Retighten.
Replace.
Replace.
Replace.
Retighten.
Replace.
Retighten.
Replace.
Adjust.
Adjust.
Replace.
Retighten.
Replace.