Suzuki VL800 - Page 271

SERVICING INFORMATION 9-5
Complaint Symptom and possible causes Remedy
Engine overheats. 1. Carbon buildup on piston crown.
2. Insufficient amount of engine oil.
3. Defective oil pump.
4. Clogged oil circuit.
5. Float chamber fuel level too low.
6. Air leakage from intake pipe.
7. Incorrect engine oil.
Clean.
Check level and add.
Replace.
Clean.
Adjust float height.
Tighten or replace.
Change.
CARBURETOR
Starting difficulty. 1. Clogged starter jet.
2. Clogged starter jet passage.
3. Air leaking from carburetor joint or vacuum hose joint.
4. Improperly working starter (enricher) plunger
Clean.
Clean.
Tighten or replace defective
part.
Adjust.
Idling or low-speed
trouble.
1. Clogged or loose pilot jet.
2. Clogged or loose pilot air jet.
3. Air leaking from carburetor joint, vacuum pipe joint, or
starter.
4. Clogged pilot outlet port.
5. Clogged bypass port.
6. Starter (enricher) plunger n t fully closed.
Clean or tighten.
Clean or tighten.
Tighten or replace defective
part.
Clean.
Clean.
Adjust.
Medium or high-
speed trouble.
1. Clogged main jet.
2. Clogged main air jet.
3. Clogged needle jet.
4. Improperly working throttle valve.
5. Clogged fuel filter.
Clean.
Clean.
Clean.
Adjust.
Clean or replace.
Overflow and fuel
level fluctuations.
1. Worn or damaged needle valve.
2. Broken needle valve spring.
3. Improperly working float.
4. Foreign matter on the needle valve.
5 Incorrect float chamber fuel level.
Replace.
Replace.
Adjust or replace.
Clean or replace with needle
valve seat.
Adjust float height.
Complaint Symptom and possible causes Remedy
Complaint Symptom and possible causes Remedy
Noisy shaft d ive
Noise seems to come from secondary bevel gear and
final bevel gear assemblies.
1. Oil level too low.
2. Drive and driven bevel gears damaged or worn.
3. Excessive backlash.
4. Improper tooth contact.
5. Damage to bearings.
Noise seems to come from propeller shaft area.
1. Propeller shaft universal joint damaged.
2. Propeller shaft splines damaged or worn.
3. Insufficient lubricant.
4. Cam dog contacting surface damaged or worn.
SHAFT DRIVE
Refill. (Check oil jet/replace
oil seal)
Replace.
Adjust.
Adjust.
Replace.
Replace.
Replace.
Refill. (Replace oil seal)
Replace.