Troubleshooting - Husqvarna 543RBX Workshop Manual

Start
The engine is not easy to start.
Idle speed (low speed)
The engine does not operate on idle speed.
The idle speed is too low.
The idle speed does not become stable.
1239 - 001 -

8 Troubleshooting

The stop screw for the throttle does not operate correctly.
Blocked fuel filter.
Blocked fuel hose.
Air in fuel pipes.
Incorrect/unsatisfactory fuel.
The needle valve is defective.
The lever arm of the needle valve is damaged.
The lever arm of the needle valve does not operate correctly.
Blocked needle valve.
The needle valve is worn.
Object in the needle valve groove.
The stop screw for the throttle does not operate correctly.
Blocked fuel filter.
Blocked fuel hose.
Air in fuel pipes.
The carburetor is not attached correctly .
The lever arm of the needle valve does not operate correctly.
Defective heat insulation seal.
The lever arm of the needle valve is damaged.
The lever arm of the needle valve is too high.
The lever arm of the needle valve does not operate correctly.
The needle valve is worn.
Object in the needle valve groove.
The stop screw for the throttle does not operate correctly.
Blocked fuel filter.
Blocked fuel hose.
Air in fuel pipes.
Incorrect/unsatisfactory fuel.
The needle valve is defective.
The carburetor is not attached correctly .
The lever arm of the needle valve does not operate correctly.
The needle valve spring is not attached correctly.
The needle valve is worn.
Object in the needle valve groove.
Troubleshooting- 67