315 Chainsaw Manual

The 315 Chainsaw is a professional-grade gasoline-powered chainsaw designed for heavy-duty cutting tasks. Featuring a 45cc engine, 18-inch bar length, automatic oiling system, anti-vibration handle, chain brake safety feature, easy-start technology, and ergonomic design. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 45cc 2-stroke engine, 18-inch guide bar, automatic chain oiler, anti-vibration system, inertia-activated chain brake, decompression valve for easy starting.

Feature	Description
Engine Displacement	45cc 2-stroke air-cooled engine
Guide Bar Length	18 inches (45cm)
Chain Pitch	3/8 inch
Fuel Tank Capacity	14.9 oz (440ml)
Oil Tank Capacity	8.5 oz (250ml)
Weight (without bar/chain)	10.8 lbs (4.9kg)
Chain Brake	Inertia-activated safety feature
Anti-Vibration System	Reduced vibration handles
Starting System	Decompression valve for easy pull
Chain Oiling	Automatic with manual override

Assembly Instructions

Unpack and inspect all components. Assemble on clean, flat surface.

1. Attach guide bar: Loosen bar nuts, position bar on studs, align chain sprocket.
2. Install chain: Place chain over bar with cutting teeth facing forward, engage drive links.
3. Adjust chain tension: Tighten bar nuts finger-tight, adjust tension screw, final tighten nuts.
4. Install handle: Attach rear handle assembly, secure with provided bolts.
5. Add bar and chain oil: Fill oil reservoir with recommended chain oil.

WARNING! Always wear protective gloves when handling chain. Ensure all fasteners are properly tightened.

First-Time Setup

Prepare chainsaw for initial use following these steps.

1. Fuel mixture: Mix high-quality 2-stroke oil with unleaded gasoline at 50:1 ratio.
2. Fill fuel tank: Use funnel to avoid spills, leave air space for expansion.
3. Prime carburetor: Press primer bulb 5-7 times until fuel is visible.
4. Set choke: Move choke lever to closed position for cold start.
5. Check chain lubrication: Verify oil flow by running saw briefly over cardboard.

CAUTION! Fuel is highly flammable. Mix and handle outdoors away from ignition sources.

Specifications

• Engine Type: 2-stroke, single cylinder, air-cooled.
• Displacement: 45cc.
• Power Output: 2.5 kW (3.4 HP) at 9,000 RPM.
• Maximum Chain Speed: 20.5 m/s.
• Sound Power Level: 112 dB(A).
• Vibration Levels: Front handle 4.2 m/s², rear handle 5.8 m/s².
• Fuel Consumption: 650 g/kWh.
• Spark Plug: NGK BPMR7A gap 0.5mm.
• Warranty: 2 years commercial use, 5 years private use.

Controls and Components

Main controls located on top and sides of unit. Front Handle: Throttle trigger, throttle lockout, hand guard. Rear Handle: Start/stop switch, choke control, primer bulb.

Safety Features: Chain brake, throttle lockout, right-hand guard, chain catcher, spark arrestor.

Operation: Pull starter handle slowly until resistance felt, then pull briskly. Adjust chain tension via side-mounted screw. Control throttle with trigger; engage lockout for safety. Monitor chain oil level through sight window.

Fuel and Lubrication

Use fresh unleaded gasoline (minimum 89 octane) mixed with 2-stroke oil at 50:1 ratio.

1. Fuel mixture: Pour oil into clean container first, then add gasoline.
2. Chain oil: Use bar and chain oil specifically designed for chainsaws.
3. Storage: Use fuel stabilizer if storing over 30 days.
4. Cleaning: Clean fuel cap screen every 10 hours of operation.

Tip: Never use automotive motor oil or recycled oil. Always mix fuel in approved container.

Operating Procedures

Follow proper starting and cutting techniques for safe operation.

1. Starting: Engage chain brake, set choke, pull starter cord until engine fires.
2. Warm-up: Allow 30-60 seconds at idle before applying load.
3. Cutting: Use full throttle when cutting; let chain do the work.
4. Kickback prevention: Keep saw body close to your body, avoid tip contact.
5. Shutdown: Allow to idle 30 seconds, move stop switch to OFF position.
6. Transport: Always engage chain brake when carrying or moving.
7. Refueling: Stop engine completely and allow to cool before refueling.

WARNING! Always wear PPE: helmet, eye protection, hearing protection, gloves, chainsaw chaps, and steel-toe boots.

Maintenance Schedule

Daily: Check chain tension, sharpness, and lubrication. Clean air filter, check fuel lines. Weekly: Clean spark arrestor, check bar wear, inspect anti-vibration mounts. Monthly: Clean carburetor, check ignition system, replace spark plug. Annually: Replace fuel filter, check piston and cylinder, professional servicing.

Storage Guidelines

For storage over 30 days: Drain fuel completely or add stabilizer. Run engine until carburetor is dry. Remove chain, clean and oil thoroughly. Store in dry, cool location away from children.

CAUTION! Never store with fuel in tank for extended periods. Fuel deterioration can damage carburetor.

Safety Information

Always maintain secure footing. Never operate above shoulder height. Keep bystanders at least 15 feet away. Be aware of kickback zone (upper quadrant of bar tip). Never cut with tip of bar. Always plan escape path from falling tree. Inspect work area for hazards like nails, wire, or rocks in wood.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel issues, spark plug	Check fuel mixture, clean spark plug, verify ignition switch is ON.
Engine starts then dies	Carburetor, air filter	Clean carburetor, replace air filter, check fuel lines.
Poor cutting performance	Dull chain, improper tension	Sharpen or replace chain, adjust tension, check bar wear.
Excessive vibration	Loose components, worn mounts	Tighten all fasteners, replace anti-vibration mounts.
Chain won't oil	Clogged oil ports, empty reservoir	Clean oil passages, refill with proper oil, check pump operation.
Overheating	Dull chain, lean mixture	Sharpen chain, adjust carburetor, clean cooling fins.

Service: Authorized service centers only. Contact manufacturer for dealer locations.

Emergency: For accidents, seek medical attention immediately. Keep first aid kit accessible.