Suzuki LT-R450K6 - Page 385

SERVICING INFORMATION 9-9
Complaint
Engine overheats
Dirty or heavy
exhaust smoke
Slipping clutch
Dragging clutch
Transmission
wlll
not shift.
Transmission will
not
shlfl back.
Transmission jumps
out of gear.
Symptom and possible causes
Defective engine internal
1. Heavy carbon deposit on piston crowns
2. Not enough oil in the engine
3. Defective oil pump or clogged oil circuit
4. Sucking air from intake pipe
5. Use incorrect engine oil
6. Defective cooling system
Lean
fuellair mixture
1. Short-circuited IAP sensorllead wire
2. Short-circuited IAT sensor/lead wire
3. Sucking air from intake pipe joint
4. Defective fuel injector
5. Defective ECT sensor
Other factors
1. Ignition timing is too advanced due to defective
timing advance system (ECT sensor,
GP sensor,
CKP sensor and
ECM).
2. Drive chain is too tight.
1. Too much engine oil in the engine
2. Worn piston rings or cylinder
3. Worn valve guides
4. Scored or scuffed cylinder wall
5. Worn valves stems
6. Defective stem seal
7. Worn oil ring side rails
1. Weakened clutch springs
2. Worn or distorted pressure plate
3. Distorted clutch plates or pressure plate
1. Some clutch spring weakened while others
are not.
2. Distorted pressure plates or clutch plates
1. Broken gearshift cam
2. Distorted gearshift forks
3. Worn gearshift pawl
1. Broken return spring on shift shaft
2. Rubbing or stickily shift shaft
3. Distorted or worn gearshift forks
1. Worn shifting gears on driveshaft or
countershaft
2. Distorted or worn gearshift forks
3. Weakened stopper spring on gearshift stopper
4. Worn gearshift cam plate
5. Gear dogldog hole worn
Remedy
Clean.
Add oil.
Replace or clean.
Retighten or replace.
Change.
See radiator section.
Repair or replace.
Repair or replace.
Repair
or replace.
Replace.
Replace.
Replace.
Adjust.
Check with inspection
window, 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.
Replace.
Replace.