14. Troubleshooting
14-5
Complaint
Symptom and Possible Causes
Remedy
Difficulty or locked
gearshift
1. Broken drive or driven bevel gear teeth
2. Distorted shift fork
3. Worn shift cam
4. Improper gearshift rod
Replace
Replace
Replace
Adjust
2. Carburetor
Complaint
Symptom and Possible Causes
Remedy
Starting Difficulty
1. Clogged starter jet
2. Clogged starter jet passage
3. Air leakage from joint between starter body
and carburetor
4. Faulty starting plunger
Clean
Clean
Clean, adjust or replace
gasket
Adjust
Idling or
low-speed
trouble
1. Clogged slow jet
2. Clogged slow jet passage
3. Clogged air intake
4. Clogged bypass port
5. Starter plunger not fully closed
6. Improper set of idle screw
7. Improper float height
Clean
Clean
Clean
Clean
Adjust
Adjust
Adjust
Medium or high
speed trouble
1. Clogged main jet
2. Clogged main air jet
3. Clogged needle jet
4. Faulty throttle valve
5. Clogged fuel filter
6. Improper float height
7. Starter plunger not fully closed
Clean
Clean
Clean
Adjust
Clean
Adjust
Adjust
Overflow and fuel
level fluctuation
1. Worn or damaged needle valve
2. Damaged needle valve spring
3. Improper working float
4. Foreign matter in needle valve
Replace
Replace
Adjust or Replace
Clean
14
Summary of Contents for 500ATV
Page 1: ...Service Manual 500ATV 500ATV 2 4 4 ...
Page 16: ...1 SERVICE INFORMATION 1 14 ...
Page 17: ...1 SERVICE INFORMATION 1 15 1 ...
Page 18: ...1 SERVICE INFORMATION 1 16 ...
Page 32: ...2 Vehicle body Muffler 2 14 Visible Parts ...
Page 53: ...4 COOLING SYSTEM 4 7 Cooling System Chart 4 ...
Page 63: ...6 Engine Removal Inspection Installation 6 1 Wu Yang 500 CC engine maintenance manual 6 ...
Page 71: ......
Page 72: ......
Page 73: ...6 Engine Removal Inspection Installation 6 11 Engine information 6 ...
Page 190: ...11 BATTERY CHARGING SYSTEM 11 9 Layout for All Electricity Equipment in Vehicle ...
Page 192: ...12 IGNITION SYSTEM 12 2 Ignition System Diagram ...
Page 200: ...12 IGNITION SYSTEM 12 10 Layout for Ignition System Equipment in Vehicle ...
Page 212: ...13 Lighting Instruments Switches 13 12 500ATV Circuit Diagram ...