The Husqvarna Chainsaw Repair Manual is a comprehensive guide for servicing, troubleshooting, and maintaining Husqvarna chainsaw models. It covers safety procedures, engine repair, fuel system maintenance, chain and bar servicing, ignition system diagnostics, carburetor adjustment, and routine maintenance schedules. Below are key sections for safety, specifications, troubleshooting, repair procedures, and parts identification.
Essential safety precautions for chainsaw operation and repair.
| Hazard | Precaution |
|---|---|
| Fuel Handling | Use approved containers; no smoking; work in well-ventilated area |
| Sharp Components | Wear cut-resistant gloves when handling chain or bar |
| Hot Surfaces | Allow engine to cool before disassembly |
| Electrical | Disconnect spark plug wire before servicing |
| Chemical Exposure | Use safety glasses and gloves with oils, solvents |
| Flying Debris | Wear eye protection during operation and testing |
| Kickback | Maintain proper chain tension and sharpness |
| Lifting | Lift with legs, not back; use assistance for heavier models |
| Workspace | Keep area clean, dry, and free of ignition sources |
| Manual Reference | Read entire manual before attempting repairs |
Common Husqvarna chainsaw models covered in this manual.
WARNING! Always verify model number and specifications before ordering parts or performing repairs.
Required tools for chainsaw repair and maintenance.
CAUTION! Use proper tools to avoid damage to components and ensure safe repair.
Procedures for engine disassembly, inspection, and reassembly.
Cylinder & Piston: Inspect for scoring; measure ring end gap; replace if worn. Crankshaft & Bearings: Check for play; replace seals during bearing service. Recoil Starter: Replace spring if frayed; rewind properly. Muffler: Clean spark arrestor screen; check for cracks.
Torque Specifications: Cylinder bolts: 10-12 Nm; Clutch: 40-50 Nm; Flywheel nut: 35-40 Nm.
Carburetor adjustment and fuel line replacement.
Tip: Mark fuel line positions before removal to ensure correct reinstallation.
Testing and replacing ignition components.
WARNING! Always disconnect spark plug wire during testing to prevent accidental starting.
Chain installation, tensioning, and bar maintenance.
Chain Direction: Ensure cutting teeth face forward on top of bar. Tensioning: Adjust until chain snaps back when pulled from bar. Sharpening: File at 30° angle; maintain equal tooth length. Bar Maintenance: Flip bar weekly for even wear; clean groove and oil holes.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | No spark, fuel issue, flooded | Check spark, fuel flow, air filter; try starting with choke off |
| Engine starts then dies | Clogged fuel filter, carb adjustment | Replace fuel filter; adjust L screw; clean carburetor |
| Loss of power | Dirty air filter, clogged muffler, worn piston | Clean/replace filter; clean spark arrestor; check compression |
| Chain won't turn | Clutch worn, sprocket damaged, chain brake engaged | Inspect clutch shoes; replace drive sprocket; disengage brake |
| Excessive vibration | Loose components, unbalanced chain, AV mounts worn | Tighten bolts; balance chain; replace anti-vibration mounts |
| Oil not feeding | Clogged oil passages, faulty pump, wrong oil | Clean bar oil holes; test pump; use recommended bar oil |
Reset: After carb adjustment, allow engine to idle 1 minute before testing.
Exploded views for major assemblies: Engine, Carburetor, Ignition, Clutch, Oil Pump. Reference part numbers for ordering. Always use genuine Husqvarna parts for optimal performance and safety.
Husqvarna limited warranty covers defects in materials/workmanship (typically 1-2 years for consumer models, 90 days for commercial). Keep purchase receipt. Warranty void if non-genuine parts used or repairs attempted by unauthorized service. For support, visit www.husqvarna.com or contact 1-800-487-5962.