HYOSUNG Aquila GT250 Ej Service Manual page 106

Complaint
Dirty or heavy 1. Too much engine oil in the engine.
exhaust smoke.
2. Worn piston rings or cylinders.
3. Worn valve guides.
4. Cylinder wall scored or scuffed.
5. Worn valves stems.
6. Defective stem seals.
7. Worn side rails.
Slipping clutch.
1. Weakened clutch springs.
2. Worn or distorted pressure plates.
3. Distorted clutch plates or pressure plates.
Dragging clutch. 1. Some clutch springs weakened while others are not.
2. Distorted pressure plates or clutch plates.
Transmission will 1. Broken gearshift cam.
2. Distorted gearshift forks.
not shift.
3. Worn gearshift pawl.
Transmission will
1. Broken return spring on shift shaft.
2. Rubbing or sticky shift shaft.
not shift back.
3. Distorted or worn gearshift forks.
Transmission
1. Worn shifting gears on driveshaft or countershaft.
2. Distorted or worn gearshift forks.
jumps out of
3. Weakened stopper spring on gearshift stopper.
gear.
Symptom and possible causes
105
SERVICING INFORMATION 7-3-2
Remedy
Check with inspection win-
dow, drain out excess oil.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.