Brand: Husqvarna
Category: Chainsaw
Document Type:
Language: EN
Manual for 51 - Troubleshooting and error codes + PDF Download
Uploaded: April 8, 2025, 1:57 p.m.
Warranty Summary
Husqvarna warrants the engine to be free from defects in materials and workmanship for a period of two years.
Before Using:
- Read instructions carefully.
- Check and adjust cutting equipment.
- Refuel and start, checking carburetor settings.
- Ensure chain oil reaches the chain.
Starting:
- Engage chain brake.
- Set ignition to start.
- Use choke for cold engine.
- Pull starter cord sharply.
Stopping:
- Move ignition switch to stop position.
Cutting:
- Always use full throttle.
- Cut from above (pull stroke) or below (push stroke).
- Be aware of kickback risks.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine difficult to start or runs poorly at idling speed | Dirty spark plug or incorrect gap | Clean spark plug, check and adjust gap to 0.5 mm (0.020") or replace spark plug |
| Engine overheating | Blocked muffler spark arrestor mesh | Clean or replace spark arrestor mesh |
| Engine malfunction, starting difficulties, power reduction, abnormal fuel consumption | Dirty air filter | Clean or replace air filter |