Husqvarna 350 52cc Chainsaw Manual

The Husqvarna 350 is a professional-grade 52cc chainsaw featuring a 2-stroke engine, X-Torq technology for reduced emissions, Smart Start for easy starting, LowVib anti-vibration system, combined choke/stop control, inertia-activated chain brake, side-mounted chain tensioner, and an air injection centrifugal cleaning system. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 52cc 2-stroke engine, Guide bar, Saw chain, Chain brake, Throttle trigger, Stop switch, Choke control, Fuel tank, Oil tank.

Assembly & Preparation

Unpack and inspect all parts. Assemble on a clean, stable surface.

1. Attach guide bar and chain: Place bar on mounting studs, fit chain over sprocket and bar, adjust tension.
2. Fill fuel tank: Use Husqvarna 2-stroke engine oil mixed with unleaded gasoline (50:1 ratio).
3. Fill chain oil tank: Use Husqvarna chain oil or equivalent.
4. Check chain brake: Ensure brake band moves freely and engages properly.

WARNING! Always wear appropriate personal protective equipment (PPE) including safety glasses, gloves, hearing protection, and chainsaw chaps.

First-Time Operation

Perform pre-start checks before each use.

1. Check chain tension: Chain should be snug against bar but pull freely.
2. Check chain sharpness: Dull chains increase risk of kickback.
3. Start the saw: Place on ground, engage chain brake, set choke, pull starter cord until engine fires, then disengage choke and pull again.
4. Warm up: Allow engine to idle for 30 seconds before cutting.

CAUTION! Never start the saw unless the chain brake is engaged and you are in a clear, stable position.

Specifications

• Engine Displacement: 52cc (3.2 cu. in.)
• Engine Power: 3.1 hp (2.3 kW)
• Fuel Capacity: 14.9 fl oz (0.44 liter)
• Oil Capacity: 10.1 fl oz (0.3 liter)
• Recommended Bar Length: 13" to 20" (33cm to 50cm)
• Weight (powerhead): 11.2 lbs (5.1 kg)
• Sound Pressure Level: 106 dB(A)
• Vibration Level (front/rear handle): 3.5/4.5 m/s²
• Ignition System: Electronic, air-cooled

Controls and Functions

Main controls located on top and rear handle.

Right Side: Throttle trigger, Throttle trigger lockout, Stop switch. Left Side: Choke control, Decompression valve (if equipped), Chain brake lever. Front: Front hand guard. Top: Fuel cap, Oil cap, Air filter cover.

Chain Brake: Manual activation via left hand guard; inertia activation during kickback. Chain Tensioner: Side-mounted wheel for easy adjustment. Throttle Lockout: Must be depressed before throttle can be engaged.

Safe Operation Procedures

Always follow safe cutting practices to prevent injury.

1. Maintain secure footing and balance at all times.
2. Hold saw firmly with both hands, thumbs wrapped around handles.
3. Never cut above shoulder height.
4. Be aware of kickback zone (upper quadrant of bar tip).
5. Let the chain do the cutting; don't force the saw.
6. Shut off engine when carrying saw more than a few steps.

Tip: Plan your cut and escape path before starting. Never work alone.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

1. Daily: Check chain tension, sharpness, and lubrication; clean air filter; inspect bar for wear.
2. Weekly: Clean cooling fins; check spark plug; clean fuel filter.
3. Monthly: Check all nuts and bolts for tightness; inspect anti-vibration elements.
4. Seasonally: Replace spark plug; clean carburetor; inspect clutch and sprocket.

WARNING! Always disconnect spark plug wire before performing maintenance. Use only Husqvarna-approved parts.

Chain & Bar Care

Proper chain and bar maintenance extends life and improves cutting performance.

Chain Sharpening: Use correct round file size (typically 5/32" or 4.0mm). Maintain correct filing angle (typically 30°). Bar Maintenance: Clean bar groove regularly; flip bar weekly for even wear; file down burrs on bar rails. Lubrication: Always use chain oil; adjust oil flow for cutting conditions.

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

1. Empty fuel tank or add fuel stabilizer.
2. Run engine until carburetor is dry.
3. Clean entire saw thoroughly.
4. Remove chain, clean and soak in oil.
5. Store in dry, cool place away from ignition sources.

CAUTION! Never store saw with fuel in tank for more than 30 days without stabilizer.

Regulatory Information

EPA/CARB compliant: Meets emission standards for handheld engines. CE marked: Conforms to European safety standards. Noise emission: 106 dB(A) sound power level. For genuine parts and accessories, contact authorized Husqvarna dealers only. For support, visit www.husqvarna.com or contact 1-800-487-5952.

Troubleshooting

Service: For major repairs, contact authorized Husqvarna service center.

Support: 1-800-487-5952; www.husqvarna.com