4-12
Troubleshooting
Problem: Starting impaired
Condition
Remedy
1.
Starter jet
obstructed
2.
Starter jet passage
obstructed
3.
Starter body - carburetor
leaking air
4.
Starter valve
not operating properly
1. Clean jet
2. Clean passage
3. Tighten - adjust - replace gasket
4. Check - adjust valve
Problem: Idling or low speed impaired
Condition
Remedy
1.
Slow jet
obstructed - loose
2.
Slow jet outlet
obstructed
3.
Low speed fuel screw setting
incorrect
4.
Starter valve
not fully closed
5.
Float height
incorrect
1. Clean - tighten jet
2. Clean outlet
3. Adjust screw
4. Adjust valve
5. Adjust float height
Problem: Medium or high speed impaired
Condition
Remedy
1.
High RPM “cut out”
against RPM limiter
2.
Main jet
obstructed
3.
Needle jet
obstructed
4.
Throttle vacuum piston
not operating properly
5.
Filter
obstructed
6.
Float height
incorrect
7.
Starter valve
not fully closed
1. Shift into higher gear - decrease RPM speed
2. Clean main jet
3. Clean needle jet
4. Check piston operation
5. Clean filter
6. Adjust float height
7. Adjust valve
Problem: Overflow and fuel level fluctuations
Condition
Remedy
1.
Float valve
worn - damaged
2.
Float valve spring
broken
3.
Float
not working properly
4.
Float valve
dirty
5.
Float height
too high - too low
1. Replace valve
2. Replace spring
3. Adjust float height - replace float
4. Clean valve
5. Adjust float height
Back to TOC
Back to Section TOC
Back
Summary of Contents for ATV 250 Utility 2009
Page 1: ......
