Giantz Chainsaw Manual

The Giantz Chainsaw is a powerful and reliable tool designed for both professional and home use. It features a high-performance engine, automatic chain oiling, safety features including a chain brake and throttle lock, anti-vibration system, and easy-start technology. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: High-torque engine, Guide bar, Saw chain, Automatic oiler, Chain brake, Throttle lock, Anti-vibration handles, Easy-pull starter.

Feature	Description
Engine	High-performance 2-stroke gasoline engine
Guide Bar	16-inch or 18-inch professional-grade bar
Saw Chain	Low-kickback safety chain
Automatic Oiler	Lubricates chain during operation
Chain Brake	Stops chain instantly in kickback situations
Throttle Lock	Prevents accidental throttle engagement
Anti-Vibration System	Reduces user fatigue during extended use
Easy-Pull Starter	Reduces effort required to start engine
Fuel Tank	Integrated with clear level indicator
Oil Tank	Separate reservoir for chain oil

Safety Instructions

Read all instructions before use. Always wear protective gear.

1. Personal Protective Equipment (PPE): Wear safety glasses, hearing protection, gloves, chainsaw chaps, and steel-toe boots.
2. Work Area Safety: Clear area of bystanders, especially children. Ensure secure footing.
3. Kickback Prevention: Hold saw firmly with both hands. Do not cut with tip of bar.
4. Fuel Safety: Refuel in well-ventilated area with engine off and cool. Use proper fuel/oil mix.

WARNING! Chainsaws are dangerous tools. Failure to follow safety instructions can result in serious injury or death. Never operate when tired or under the influence.

Assembly & Preparation

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

1. Attach Guide Bar & Chain: Place bar onto mounting studs. Loop chain around bar with cutting teeth facing forward on top. Adjust tension.
2. Fill Oil Tank: Use recommended bar and chain oil. Do not use waste oil.
3. Prepare Fuel Mix: Use fresh unleaded gasoline (minimum 89 octane) mixed with 2-stroke oil at 50:1 ratio (unless specified otherwise). Shake well.
4. Final Check: Ensure all nuts and bolts are tight. Check chain tension and lubrication.

CAUTION! Ensure chain brake is disengaged before starting. Keep hands away from cutting area during assembly.

Specifications

• Engine Displacement: 45cc / 50cc (model dependent).
• Guide Bar Length: 16" or 18".
• Chain Pitch/Gauge: .325" / .058" or 3/8" LP / .050".
• Fuel Capacity: Approximately 500ml.
• Oil Capacity: Approximately 300ml.
• Weight: 4.5 kg - 5.2 kg (without fuel/oil).
• Sound Power Level: < 110 dB(A).
• Vibration Level: < 2.5 m/s² (front/rear handle).
• Fuel/Oil Mix Ratio: 50:1 (Gasoline : 2-Stroke Oil).

Controls and Components

Main Controls: Throttle trigger, Throttle lockout, Chain brake lever, Stop switch, Choke lever, Primer bulb, Decompression valve (if equipped).

Components: Front handle with chain brake, Rear handle with throttle trigger, Fuel tank cap, Oil tank cap, Spark plug cover, Muffler, Guide bar cover.

Operation: Engage throttle lockout before pulling trigger. Push chain brake forward to engage (stop chain), pull back towards handle to disengage. Use choke for cold starts.

Starting & Operating

Starting Procedure (Cold Engine):

1. Place saw on flat ground. Engage chain brake.
2. Move stop switch to "I" (On) position.
3. Pull choke lever to full choke position.
4. Press primer bulb 5-6 times until fuel is visible.
5. Hold front handle with left hand, place right foot in rear handle guard.
6. Pull starter rope briskly until engine 'pops'.
7. Move choke lever to half-choke position.
8. Pull starter rope again until engine starts. Let run for 10 seconds.
9. Press throttle trigger to move choke to off. Disengage chain brake to begin cutting.

Tip: For warm restart, do not use choke. Use half-choke only if necessary.

Maintenance & Cleaning

Perform regular maintenance for optimal performance and safety.

1. Daily: Check chain tension and sharpness. Clean air filter. Check for loose parts.
2. Weekly: Clean cooling fins and muffler area. Check spark plug condition.
3. Monthly: Clean fuel filter in tank. Check fuel lines for cracks.
4. As Needed: Replace worn bar, chain, or sprocket. Clean chain brake mechanism.

WARNING! Always disconnect spark plug wire before performing any maintenance. Allow engine to cool completely.

Chain Sharpening & Tensioning

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

Tensioning: Loosen bar nuts. Adjust tensioning screw until chain fits snugly against bar but can be pulled around by hand. Tighten bar nuts. Re-check tension.

Sharpening: Use correct round file size for chain. File each cutter at recommended angle (typically 30°). Maintain equal file strokes per cutter. File depth gauges (rakers) with flat file and gauge.

Storage Guidelines

For long-term storage (over 30 days):

1. Drain all fuel from tank and carburetor. Run engine until it stops.
2. Remove spark plug, add 1 teaspoon of 2-stroke oil into cylinder. Pull starter slowly 2-3 times to coat interior. Reinstall plug.
3. Remove chain, clean and soak in oil. Clean entire saw.
4. Store in a dry, cool place, away from children.

CAUTION! Never store with fuel in the tank. Old fuel can damage engine components.

Warranty Information

Giantz Chainsaws are covered by a limited warranty for residential use. Warranty period and terms vary by region. Proof of purchase is required. Warranty does not cover damage from misuse, neglect, improper fuel, or unauthorized repairs. For warranty service, contact your place of purchase or visit www.giantz.com.au. Keep this manual for reference.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine will not start	No fuel, flooded, spark plug	Check fuel mix; wait if flooded; check/clean/replace spark plug.
Engine starts then dies	Clogged air/fuel filter, carburetor	Clean or replace air filter; clean fuel filter; adjust carburetor.
Chain does not turn	Chain brake engaged, clutch, sprocket	Disengage chain brake; check clutch drum and sprocket for wear.
Chain oils poorly	Empty oil tank, clogged oil hole	Fill oil tank; clean oil outlet on bar; check oil pump.
Excessive vibration	Loose parts, damaged bar, unbalanced chain	Tighten all nuts/bolts; inspect/replace bar; sharpen chain evenly.
Loss of power	Dirty air filter, clogged muffler, old fuel	Clean air filter; clean spark arrestor screen; use fresh fuel mix.

Service: For technical support or spare parts, contact: [email protected] or visit www.giantz.com.au.