Husqvarna Chainsaw Maintenance Manual

The Husqvarna Chainsaw is a professional-grade power tool designed for demanding cutting tasks. This manual covers essential maintenance procedures to ensure optimal performance, safety, and longevity of your chainsaw. Below are key sections for safety, daily checks, routine maintenance, troubleshooting, and parts information.

Safety Precautions

Always prioritize safety before performing any maintenance. Key safety components: Chain Brake, Throttle Lockout, Right Hand Guard, Muffler, Front Hand Guard.

Daily Maintenance Checklist

Perform these checks before each use to ensure safe operation.

1. Check chain tension: Adjust if loose (should snap back when pulled).
2. Inspect chain sharpness: Sharpen if teeth are dull or damaged.
3. Check bar condition: Look for wear, cracks, or uneven rails.
4. Verify chain lubrication: Ensure oil reservoir is filled and oiler is working.
5. Inspect air filter: Clean or replace if clogged.
6. Check fuel mixture: Use correct gasoline/oil ratio (typically 50:1).
7. Test safety features: Ensure chain brake and throttle lockout function properly.

WARNING! Always wear protective gloves and eyewear during maintenance. Ensure chainsaw is completely cool and spark plug wire is disconnected.

Chain Maintenance & Sharpening

Proper chain maintenance ensures efficient cutting and reduces kickback risk.

1. Cleaning: Remove sap and debris with kerosene or specialized cleaner.
2. Tension adjustment: Loosen bar nuts, adjust tensioning screw until chain fits snugly against bar.
3. Sharpening: Use correct round file size (typically 5/32" or 3/16"). Maintain 30° cutting angle and 10° top plate angle.
4. Depth gauge adjustment: File depth gauges to proper height (0.025" below cutter edge).
5. Rotation: Rotate chain regularly to ensure even wear.

CAUTION! Always secure bar when adjusting tension. Replace chain when cutters are worn beyond repair or damaged.

Engine Maintenance

• Spark Plug: Clean and gap every 25 hours; replace every 100 hours (gap: 0.020").
• Cylinder & Piston: Inspect for scoring or carbon buildup during major service.
• Carburetor: Adjust idle and high-speed screws as needed; clean annually.
• Muffler: Clean spark arrestor screen monthly; check for cracks.
• Ignition System: Check flywheel key and coil gap during tune-ups.
• Compression: Test annually; should be 120-150 PSI for most models.
• Fuel Filter: Replace every season or when clogged.
• Oil Pump: Adjust flow rate to match cutting conditions.

Air Filter & Cooling System

Clean air intake system weekly during heavy use. Front Panel: Air Filter Cover, Cooling Fins, Starter Assembly.

Cleaning Procedure: Remove filter cover, tap filter to remove debris, wash in warm soapy water if heavily soiled, dry completely before reinstalling. Never run engine without air filter.

Cooling System: Clean cooling fins with compressed air or brush to prevent overheating. Ensure air intake slots are clear of obstructions. Check cylinder fins for damage or debris buildup.

Fuel System

Use fresh fuel mixture (max 30 days old). Recommended: 89+ octane gasoline with Husqvarna 2-stroke oil at 50:1 ratio.

1. Always mix fuel in separate container before adding to tank.
2. Clean fuel cap vent regularly to prevent vacuum lock.
3. Drain fuel system completely before storage exceeding 30 days.
4. Replace fuel filter annually or when flow is restricted.

Tip: Use fuel stabilizer if storing for 1-3 months. Never use automotive oil or ethanol blends above 10%.

Bar & Sprocket Care

Regular bar maintenance extends life and improves cutting performance.

1. Bar cleaning: Remove bar regularly, clean groove with appropriate tool.
2. Bar flipping: Flip bar every 2-3 sharpenings to ensure even wear.
3. Sprocket inspection: Check for wear (replace if teeth are hooked or worn).
4. Lubrication: Grease sprocket bearing through grease fitting (if equipped).
5. Rail dressing: File bar rails if they become rounded or uneven.
6. Bar straightness: Check for bending or twisting; replace if damaged.
7. Nose sprocket: Replace if worn or doesn't spin freely.

WARNING! Always replace bar and sprocket as a matched set when either is worn. Never use a new chain on a worn sprocket.

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

1. Long-term storage: Drain fuel completely from tank and carburetor.
2. Run engine dry after draining fuel to clear carburetor.
3. Remove chain, clean thoroughly, and soak in oil before storage.
4. Clean entire chainsaw, paying special attention to cooling fins.
5. Store in dry, cool place away from direct sunlight.
6. Hang bar vertically to prevent warping.
7. Cover with breathable cloth to prevent dust accumulation.

CAUTION! Never store with fuel in tank for more than 30 days. Fuel breakdown can damage carburetor and fuel lines.

Troubleshooting Common Issues

Reset: For electronic ignition models, disconnect spark plug wire for 30 seconds to reset system.

Service: 1-800-HUSKY-95; www.husqvarna.com

Parts & Specifications

• Engine Type: 2-stroke, single cylinder
• Displacement: Varies by model (typically 40cc-120cc)
• Power Output: 2.0-6.5 kW depending on model
• Fuel Capacity: 0.5-1.0 liters
• Oil Capacity: 0.2-0.5 liters
• Bar Lengths: 13"-36" available
• Chain Pitch: 3/8" or .325" standard
• Weight: 4.5-8.5 kg (powerhead only)
• Warranty: 1-2 years commercial use; 2-4 years consumer use
• Emissions: Meets EPA Phase 3 and EU Stage V standards

Genuine Parts: Always use Husqvarna replacement parts for optimal performance and warranty compliance.