The usage method of an Chainsaw

The usage method of an Chainsaw

I. Pre-Use Preparation  

1. Fuel Mixing (Critical)  

For two-stroke models, mix gasoline with dedicated two-stroke engine oil:  

Standard ratio: 25:1 (25 parts gasoline to 1 part oil); for new or break-in engines, use 20:1.  

Mix thoroughly before adding to the fuel tank. Never use pure gasoline or four-stroke engine oil.  

2. Equipment Inspection  

Chain and guide bar: Chain should be properly tensioned—when lifted at the bottom, it should clear the guide bar and fall back smoothly upon release; check for deformation or cracks in the guide bar.  

Lubrication: Fill the oil reservoir with chain-specific lubricant to ensure proper oil supply.  

Fasteners: Ensure all handles, guide bar screws, and sprocket are securely tightened.  

Air filter and spark plug: Check for blockage or carbon buildup; verify brake pad returns normally.  

Protective gear: Wear cut-resistant gloves, safety goggles, cut-resistant pants, slip-resistant footwear, and a hard hat. Keep clothing tight—avoid loose garments.  

3. Placement Requirements  

Place the chainsaw horizontally on a firm, flat surface. Keep the chain suspended off the ground and away from debris. Store away from flammable materials.

II. Starting Procedure (Start on Ground—Never Start by Hand)  

Release the chain brake (push the brake lever forward to lock the chain).  

Turn on the fuel valve and set the choke fully closed (for cold starts); open the choke completely for warm engines.  

Press the carburetor primer bulb until the fuel line is filled with fuel.  

Hold the choke/ignition switch down firmly, stabilize the machine, and quickly pull the starter rope until the engine fires.  

After starting, slowly open the choke and let the engine idle for 30 seconds to 1 minute for warming up. Normal operation means the chain does not rotate during idling.

III. Felling/Cutting Operations  

Unlock the chain brake (return the lever to neutral), grip both front and rear handles firmly, stand with feet planted and body low.  

Cutting Tips:  

Allow the tip of the chain to gently touch the wood first, then make smooth, controlled cuts. Never force the saw or pry with the guide bar head.  

Maintain straight, steady motion while cutting—do not jerk or twist the guide bar sideways to prevent chain binding or kickback.  

When felling large trees, leave a support notch first, anticipate the tree’s fall direction, and position yourself in a safe area behind and to the side.  

Operating Conditions: Listen carefully to engine sounds throughout operation. If power drops, stop cutting immediately to avoid stalling or engine failure.  

Short-distance movement: Always engage the chain brake to prevent accidental injury.

IV. Shutdown Procedure  

Remove the saw from the log and let it idle briefly unloaded.  

Close the throttle to shut off the engine. For long-term storage, turn off the fuel valve.  

Do not place a hot engine directly on dry grass, plastic, or other flammable materials.

V. Daily Cleaning and Maintenance  

After each use:  

Clean wood chips and sap from the guide bar and chain. Clean the engine cooling fins and air filter.  

Check chain tension and blade sharpness—sharpen dull teeth promptly.  

Wipe off surface oil and debris.  

Regular Maintenance:  

Clear chain lubrication channels to ensure automatic oiling during operation.  

Periodically clean carbon deposits from the spark plug and adjust electrode gap.  

Replace severely worn chains and guide bars as needed; regularly lubricate the sprocket with grease.  

Long-Term Storage: Drain remaining fuel from the tank, remove the chain for cleaning and oiling, and store in a dry place.

VI. Safety Prohibitions (Most Critical)  

❌ Never operate under the influence of alcohol, fatigue, or illness.  

❌ Never point the guide bar tip toward your body—prevent kickback injuries.  

❌ Never work in strong winds, rain, or on wet, slippery slopes.  

❌ Never operate with one hand or without proper protection at height.  

❌ Never touch the rotating chain during operation; never use hands to clear wood chips.  

❌ Always turn off and cool the engine before refueling, servicing, or sharpening the chain.  

❌ Keep children and unauthorized personnel away from the work area.

VII. Common Issues & Quick Fixes  

Chain not turning / jerking: Brake not released, chain too tight, or wood chips jammed.  

Hard starting: Incorrect fuel mix, improper choke setting, clogged air filter, or faulty spark plug.  

Weak cutting performance or smoking: Dull chain, blocked fuel line, or insufficient oil.  

Chain slipping: Insufficient tension or worn guide bar groove.