Earthquake Chainsaw Manual

The Earthquake Chainsaw is a high-performance, gas-powered chainsaw designed for demanding cutting tasks. It features a powerful engine, automatic oiling system, safety chain brake, anti-vibration handles, 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, Cutting chain, Chain brake, Automatic oiler, Anti-vibration system, Safety throttle lock.

Assembly Instructions

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

1. Attach guide bar: Remove bar cover nuts, position bar on studs, replace nuts hand-tight.
2. Install chain: Place chain over bar sprocket, ensure cutting teeth face forward direction.
3. Adjust chain tension: Use side tensioner to achieve proper chain slack (check manual).
4. Fill oil reservoir: Use recommended bar and chain oil, fill to maximum level.
5. Fuel mixture: Prepare proper gas/oil mixture in separate container before fueling.

WARNING! Always wear protective gloves during assembly. Ensure chain is properly tensioned before operation.

First-Time Setup

Complete assembly, then prepare for first use.

1. Fuel preparation: Mix fresh unleaded gasoline with 2-cycle oil at 50:1 ratio.
2. Priming: Press primer bulb 5-10 times until fuel is visible in clear line.
3. Choke setting: Set choke to FULL position for cold starts.
4. Starting procedure: Place on ground, engage chain brake, pull starter cord firmly.
5. Warm-up: Allow engine to run at idle for 2-3 minutes before cutting.

CAUTION! Never start chainsaw without proper bar and chain installation. Keep bystanders at safe distance.

Specifications

• Engine Type: 2-cycle air-cooled gasoline engine
• Displacement: 45cc to 62cc (model dependent)
• Power Output: 2.5 HP to 4.0 HP
• Fuel Capacity: 14.2 oz (420 ml)
• Oil Capacity: 8.5 oz (250 ml)
• Bar Length Options: 16", 18", 20"
• Chain Pitch: 3/8" low-profile
• Chain Gauge: 0.050"
• Weight: 10.5 to 12.5 lbs (without bar and chain)
• Sound Level: 105 dB(A) at operator's ear

Controls and Safety Features

Main controls located on top and rear handle. Front Handle: Throttle trigger, Throttle lockout, Chain brake lever. Rear Handle: Start/Stop switch, Choke lever, Primer bulb.

Safety Features: Chain brake (inertia-activated), Right-hand guard, Throttle lockout, Spark arrestor, Anti-vibration system, Chain catcher.

Operation: Engage throttle lockout before pulling trigger. Chain brake activates automatically during kickback or manually via hand guard. Always use two hands during operation. Wear PPE: helmet, eye protection, hearing protection, gloves, chainsaw chaps, and steel-toe boots.

Fuel and Oil Requirements

Fuel: Fresh unleaded gasoline (87 octane minimum) mixed with 2-cycle engine oil at 50:1 ratio. Oil: High-quality bar and chain oil (ISO viscosity grade 30 or higher).

1. Mix fuel in approved container: Add oil to gasoline, shake thoroughly.
2. Fill fuel tank: Use funnel to avoid spills, wipe any drips immediately.
3. Check oil reservoir: Fill before each use, check during operation.
4. Storage: Use fuel stabilizer for storage over 30 days.

Tip: Never use automotive motor oil or diesel fuel. Never mix fuels near open flame.

Operating Procedures

Supports felling, limbing, bucking, and pruning operations.

1. Starting: Set on flat surface, engage chain brake, set choke, pull starter cord.
2. Warm-up: Allow 2-3 minutes at idle before applying load.
3. Cutting: Use full throttle when cutting, let chain do the work.
4. Kickback prevention: Avoid upper quadrant of bar tip, maintain secure grip.
5. Shutdown: Allow idle for 30 seconds, move stop switch to OFF position.
6. Transport: Engage chain brake, allow to cool, use scabbard over bar.
7. Refueling: Stop engine, allow to cool 5 minutes, clean area before opening tank.

WARNING! Never operate above shoulder height. Always plan escape path when felling trees.

Maintenance Schedule

Daily: Check chain tension, sharpness, and lubrication. Clean air filter, check for loose fasteners. Weekly: Clean cooling fins, check spark plug, inspect bar for wear. Monthly: Clean fuel filter, check fuel lines, inspect anti-vibration mounts. Seasonally: Replace spark plug, clean carburetor, inspect clutch and sprocket.

Chain Sharpening Guide

Use round file matching chain pitch (typically 5/32" or 3/16").

1. Secure bar: Clamp bar in vise or use filing guide.
2. File angle: Maintain 30-degree angle on cutting teeth.
3. File depth: Maintain consistent depth on all cutters.
4. Depth gauges: File rakers to proper height (0.025" below cutters).
5. Check symmetry: Ensure left and right cutters are filed equally.

CAUTION! Always wear gloves when handling chain. File in one direction only, away from body.

Warranty Information

Limited warranty: 2 years residential use, 90 days commercial use. Warranty covers defects in materials and workmanship. Not covered: Normal wear, misuse, improper maintenance, accidental damage. For warranty service, contact authorized Earthquake service center with proof of purchase. For support, visit www.earthquakeproducts.com or contact 1-800-345-6007.

Troubleshooting

Reset: For electronic ignition models, disconnect spark plug wire for 30 seconds to reset system.

Service: 1-800-345-6007; www.earthquakeproducts.com