52cc 22 Gasoline Chainsaw Manual

The 52cc 22 Gasoline Chainsaw is a powerful and versatile tool designed for demanding cutting tasks. It features a 52cc 2-stroke engine, a 22-inch guide bar and chain, automatic chain oiling, anti-vibration system, safety features including chain brake and throttle lockout, and easy-start technology. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 52cc 2-stroke engine, 22-inch guide bar and chain, automatic oiler, anti-vibration handles, safety chain brake, throttle lockout, side-access chain tensioner, and decompression valve for easy starting.

Safety Information

Read and understand all instructions before use. Always wear appropriate PPE.

1. Personal Protective Equipment (PPE): Always wear safety glasses, hearing protection, gloves, chainsaw chaps/pants, and sturdy boots.
2. Work Area Safety: Keep bystanders and pets at least 15 feet away. Ensure secure footing. Do not operate in wet conditions.
3. Kickback Zone: Be aware of the upper quadrant of the guide bar tip. Avoid contact with this area during cutting.
4. Pre-Operation Check: Inspect chain sharpness, tension, and lubrication. Check for loose parts or damage.

WARNING! Kickback can cause severe injury or death. Always hold chainsaw firmly with both hands. Never operate above shoulder height or with one hand.

Assembly & Preparation

Unpack all parts. Assembly typically requires attaching the guide bar and chain, and filling fluids.

1. Attach Guide Bar & Chain: Place bar on mounting studs. Loop chain around sprocket and bar with cutting teeth facing forward on top. Adjust tension.
2. Fill Engine Oil: Use high-quality 2-stroke engine oil at a 50:1 fuel/oil ratio (check manual). Mix thoroughly in a separate fuel can.
3. Fill Bar & Chain Oil: Use specified bar and chain oil. Fill the oil reservoir.
4. Check Chain Tension: Chain should be snug against the bar but pull freely by hand. Re-tension after initial use.

CAUTION! Use only recommended fuels and lubricants. Improper mixture can cause engine damage.

Specifications

• Engine: 52cc, 2-stroke, air-cooled.
• Power Output: Approximately 3.0 HP.
• Guide Bar: 22 inches (55 cm).
• Chain Speed: Up to 20 m/s at max RPM.
• Fuel: Unleaded gasoline (min 89 octane) mixed with 2-stroke oil (50:1).
• Idle Speed: 2,800 - 3,200 RPM.
• Max Engine Speed: 12,500 - 13,500 RPM.
• Weight (Powerhead): Approximately 6.2 kg (13.7 lbs).
• Sound Pressure Level: ~110 dB(A). Wear hearing protection.

Controls and Components

Main Controls: Throttle trigger, throttle lockout, stop switch, choke lever, primer bulb, chain brake lever, decompression valve (if equipped).

Components: Front handguard/chain brake, rear handle with throttle, top handle, fuel cap, oil cap, spark plug, air filter cover, muffler, side-mounted chain tensioner.

Operation: Depress throttle lockout to allow throttle trigger movement. Engage chain brake by pushing handguard forward. Use choke for cold starts.

Starting & Stopping the Engine

Cold Start:

1. Place chainsaw on firm, flat ground. Engage chain brake.
2. Press decompression valve (if equipped).
3. Move choke lever to FULL CHOKE position. Press primer bulb 5-6 times.
4. Hold front handle firmly with left hand, place right foot in rear handle. Pull starter rope briskly until engine 'pops'.
5. Move choke lever to HALF CHOKE. Pull starter rope until engine starts.
6. Blip throttle to disengage choke. Allow 30-second warm-up.

Warm Start: Choke OFF. Follow steps 4-6.

Stopping: Release throttle. Press and hold the STOP switch until engine stops.

Operating Instructions

Proper cutting techniques ensure safety and efficiency.

1. Basic Stance: Stand with feet shoulder-width apart, left foot slightly forward. Hold handles firmly with both hands, thumbs wrapped underneath.
2. Making a Cut: Let the chain do the work. Apply light downward pressure. Do not force the saw.
3. Buckling (Cutting Fallen Logs): Support log off ground. Cut from top. For large logs, cut 1/3 from top, then finish from bottom to avoid pinching.
4. Limbing: Cut branches from bottom of tree working toward top. Keep trunk between you and the chain.
5. Felling Trees: For experienced users only. Plan escape path. Make notch cut and back cut. Retreat along planned path.

WARNING! Never operate a chainsaw while fatigued or under the influence of medication, alcohol, or drugs.

Maintenance Schedule

Chain Sharpening & Tensioning

A sharp, properly tensioned chain is critical for safety and performance.

1. Tensioning: Loosen bar nuts. Use adjustment screw to raise bar until chain is snug. Chain should pull freely from bar but not sag. Tighten bar nuts securely.
2. Sharpening: Use correct round file size (typically 5/32" or 3/16"). File each cutter at the manufacturer's specified angle (usually 30°). Maintain equal file strokes per cutter. File depth gauges (rakers) with a flat file and gauge.

Tip: Sharpen chain frequently. A dull chain requires more force, increases wear, and raises kickback risk.

Storage Guidelines

Prepare chainsaw for storage to prevent fuel system damage and corrosion.

1. Drain all fuel from the tank and run the engine until it stops to clear the carburetor.
2. Remove chain and bar. Clean thoroughly, soak bar in oil, and hang.
3. Clean entire saw. Wipe metal parts with an oiled cloth.
4. Store in a dry, cool place, out of reach of children.

CAUTION! Never store chainsaw with fuel in the tank for more than 30 days. Stale fuel can damage engine components.

Troubleshooting

Service: For complex repairs, contact an authorized service center. Use only genuine replacement parts.