Gardenline 45cc Petrol Chainsaw Manual

The Gardenline 45cc Petrol Chainsaw is a powerful and versatile tool designed for demanding cutting tasks. It features a 45cc 2-stroke engine, automatic chain oiling, anti-vibration system, safety chain brake, quick-stop inertia brake, and a 16-inch guide bar. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 45cc 2-stroke petrol engine, 16-inch guide bar and chain, automatic chain oiler, safety chain brake, anti-vibration handles, primer bulb, choke control, and stop switch.

Safety Instructions

Read all instructions before use. Always wear appropriate PPE.

1. Personal Protective Equipment (PPE): Always wear safety glasses, hearing protection, gloves, steel-toe boots, and chainsaw chaps or trousers.
2. Work Area Safety: Keep bystanders and pets at least 15 metres away. Ensure secure footing.
3. Fuel Safety: Refuel outdoors in well-ventilated area with engine off and cool. Use fresh unleaded petrol mixed with 2-stroke oil at 50:1 ratio.
4. Kickback Danger: Be aware of kickback zone (upper quadrant of bar tip). Never cut with the tip. Always hold saw firmly with both hands.
5. Chain Brake Test: Test chain brake function before each use by engaging it with the front hand guard.

WARNING! Failure to follow safety instructions can result in serious injury or death. Never operate a chainsaw while tired, under the influence of medication, alcohol, or drugs.

Assembly & Preparation

Unpack all parts. Assembly requires attaching the guide bar and chain, and filling with fuel and oil.

1. Attach Guide Bar & Chain: Place bar onto mounting studs. Loop chain around sprocket and onto bar, ensuring cutting teeth face forward on top. Install bar cover nuts and tighten securely.
2. Fill Chain Oil Tank: Use recommended bar and chain oil. Fill oil tank to maximum level.
3. Mix Fuel: Mix fresh unleaded petrol (min. 90 octane) with high-quality 2-stroke engine oil at a 50:1 ratio (20ml oil per 1 litre of petrol). Shake well.
4. Fill Fuel Tank: Add fuel mixture to tank. Avoid overfilling.
5. Check Chain Tension: New chain will stretch. Adjust tension so chain snaps back when pulled from middle of bar. Re-tension after first 10 minutes of use.

CAUTION! Ensure chain is installed correctly. An incorrectly installed chain can derail or break, causing injury.

Specifications

• Engine Type: 45cc, 2-stroke, single cylinder, air-cooled.
• Power Output: 2.2 kW (3.0 HP).
• Fuel: Unleaded petrol (min 90 RON) mixed with 2-stroke oil at 50:1 ratio.
• Bar Length: 16 inches (40 cm).
• Chain Pitch/Gauge: 3/8" LP, .050" (1.3mm).
• Chain Speed: Approx. 20 m/s at max RPM.
• Idle Speed: 2,800 - 3,200 RPM.
• Max Engine Speed: 12,500 RPM.
• Sound Pressure Level: 112 dB(A) (wear hearing protection!).
• Vibration Level: Front/ Rear Handle: 4.5/3.2 m/s².

Controls and Components

Familiarise yourself with all controls before starting the engine.

Main Controls:

• Throttle Trigger: Located inside rear handle. Squeeze to increase engine speed.
• Throttle Trigger Lockout: Must be depressed before throttle can be engaged.
• Stop Switch: Move to "I" (On) or "O" (Off).
• Choke Lever: Used for cold starting. Push down to engage choke.
• Primer Bulb: Press 5-10 times before a cold start to draw fuel into carburettor.
• Decompression Valve: Button to reduce compression for easier starting.
• Front Hand Guard / Chain Brake Lever: Pushing guard forward engages chain brake. Pull back to disengage.
• Chain Oiler Adjustment Screw: Located near oil tank cap. Turn clockwise to increase oil flow.

Starting & Stopping the Engine

Cold Start Procedure:

1. Place chainsaw on firm, level ground. Ensure chain is clear of obstructions.
2. Engage chain brake by pushing front hand guard forward.
3. Move stop switch to "I" (On).
4. Push choke lever fully down.
5. Press decompression valve (if equipped).
6. Press primer bulb 5-10 times until fuel is visible.
7. Place foot in rear handle and hold front handle firmly. Pull starter rope sharply until engine 'fires' (usually 3-5 pulls).
8. Move choke lever halfway up to half-choke position.
9. Pull starter rope again until engine starts. Engine will run at fast idle.
10. Briefly squeeze throttle trigger to disengage half-choke. Allow engine to warm up for 30-60 seconds.
11. Disengage chain brake by pulling hand guard back towards you. Saw is ready for use.

Warm Start: Follow steps 1-3 and 9-11 (no choke or primer needed).

Stopping: Release throttle, allow engine to idle, move stop switch to "O". Engage chain brake.

Operating the Chainsaw

Always maintain a firm grip with both hands. Thumbs wrapped underneath handles.

1. Basic Cutting: Let the chain do the work. Apply light downward pressure. Do not force the saw.
2. Felling Trees: Not recommended for untrained users. Plan escape path. Use proper notch and back cut techniques.
3. Limbing: Cut branches from bottom side of felled tree. Beware of spring-back.
4. Bucking (Cutting Logs): Support log off ground. Cut from top down. Avoid contact with ground (dulls chain).
5. Kickback Prevention: Always be aware of bar tip. Never cut above shoulder height. Use a sharp chain.
6. Chain Oiling: Check oil level frequently. Adjust oiler for dusty/dry conditions (more oil) or clean wood (less oil). A light line of oil should be visible on the bar during operation.

WARNING! Never operate the chainsaw with one hand. Do not cut with the upper tip of the bar. Always shut off engine before setting it down.

Maintenance & Storage

Regular maintenance ensures safety and longevity.

• Daily/Pre-Use: Check chain tension, sharpness, and brake function. Check fuel/oil levels. Inspect for loose nuts/bolts. Clean air filter.
• Weekly/After 10 Hours: Clean cooling fins and cylinder area. Check spark plug condition and gap (0.65mm). Clean spark arrestor in muffler (if equipped).
• Monthly/Seasonal: Clean fuel filter in tank. Check/replace fuel line if cracked. Grease sprocket tip (if applicable).
• End of Season Storage: Drain fuel tank and run engine until it stops to clear carburettor. Remove chain and bar, clean and soak in oil. Clean entire saw. Store in a dry, secure place.

CAUTION! Always disconnect spark plug wire before performing any maintenance except refuelling.

Chain Sharpening & Tensioning

A sharp chain is safer and more efficient.

1. Tensioning: Loosen bar nuts. Using a scrench tool, turn tensioning screw clockwise until chain is snug against bar but can be pulled around by hand. Retighten bar nuts securely. Re-check tension when chain is cold.
2. Sharpening: Use a round file matching chain pitch (e.g., 4.0mm for 3/8" LP). Secure bar in a vice. File each cutter at the manufacturer's specified angle (typically 30°). Maintain equal file strokes per cutter. File depth gauges (rakers) with a flat file and gauge to correct height (approx. 0.65mm below cutter).
3. Replacing Chain/Bar: Replace chain when cutters are worn down or damaged. Flip bar periodically for even wear. Replace bar if groove is excessively worn or damaged.

Troubleshooting

Warranty & Support

This product is covered by a standard 2-year warranty for domestic use from date of purchase, subject to terms and conditions. Warranty does not cover wear parts (chain, bar, spark plug, air filter), damage from misuse, neglect, or use of incorrect fuel/oil.

For technical support, spare parts, or to locate an authorised service agent:

Website: www.gardenline-support.com
Customer Service: 0800 123 4567
Email: [email protected]

Always quote the model number (GL-45CS) and serial number when contacting support.