590 chainsaw manual

The 590 Chainsaw is a professional-grade gasoline-powered chainsaw designed for heavy-duty cutting tasks. It features a high-performance engine, automatic oiling system, safety chain brake, anti-vibration handles, and multiple safety features. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: High-torque engine, 20-inch guide bar, automatic chain oiler, safety chain brake, decompression valve, anti-vibration system.

Feature	Description
Engine Type	2-stroke gasoline engine, 59cc displacement
Guide Bar Length	20 inches standard (16-24 inch compatible)
Chain Type	.325" pitch, 0.063" gauge safety chain
Fuel Capacity	15.2 fl oz (450 ml) fuel tank
Oil Capacity	8.5 fl oz (250 ml) chain oil tank
Weight	12.8 lbs (5.8 kg) without bar and chain
Ignition System	Electronic ignition with stop switch
Safety Features	Chain brake, hand guards, throttle lockout
Vibration Dampening	Anti-vibration handles and mounts
Starting System	Decompression valve for easier starting

Safety Instructions

Read all instructions before operation. Wear proper safety equipment.

1. Always wear: Safety glasses, hearing protection, gloves, chainsaw chaps, steel-toed boots.
2. Clear work area of obstacles and bystanders (minimum 15 feet/4.5 meters).
3. Check chain tension before each use; chain should snap back when pulled.
4. Never operate with damaged or missing safety equipment.
5. Use proper cutting techniques; avoid kickback zones.

WARNING! Chainsaws are dangerous tools. Failure to follow safety instructions can result in serious injury or death. Keep hands away from moving chain.

Assembly & Setup

Unpack and inspect all components. Assembly requires basic tools.

1. Attach guide bar: Loosen bar nuts, position bar on studs, align chain with sprocket.
2. Install chain: Place chain over bar with cutting teeth facing forward, adjust tension.
3. Fill fuel: Mix gasoline with 2-stroke oil at 50:1 ratio (2.6 oz oil per gallon).
4. Fill chain oil: Use SAE 30 or special chain oil in oil tank.
5. Check controls: Ensure throttle, choke, and chain brake function properly.

CAUTION! Fuel is flammable. Fill outdoors away from ignition sources. Wipe spills immediately.

Specifications

• Engine: 59cc 2-stroke, air-cooled
• Power Output: 3.8 kW (5.1 HP) at 9,500 RPM
• Max Torque: 3.2 Nm at 7,500 RPM
• Fuel Consumption: Approx. 0.9 L/hour at full load
• Sound Pressure: 105 dB(A) at operator's ear
• Vibration Level: Front handle 4.2 m/s², rear handle 3.8 m/s²
• Spark Plug: NGK BPMR7A (gap 0.020 inch/0.5 mm)
• Carburetor: Walbro WT series, adjustable H/L jets
• Warranty: 2 years commercial, 5 years consumer

Controls and Components

Main controls located on top and rear handles.

Top Handle: Throttle trigger, throttle lockout, chain brake lever, choke control, stop switch.

Rear Handle: Decompression valve, primer bulb, fuel cap, oil cap, air filter cover.

Safety Features: Chain brake activates manually (front hand guard) or automatically (inertia). Throttle lockout prevents accidental throttle engagement. Hand guards protect from debris and chain.

Operation Guide

Starting procedure for cold and warm engine.

1. Place on flat, clear surface. Engage chain brake.
2. Set choke to full (cold) or half (warm). Press decompression valve.
3. Press primer bulb 5-6 times until fuel visible.
4. Hold rear handle with foot, pull starter cord briskly 3-5 times.
5. When engine fires, move choke to half, pull until running.
6. Disengage chain brake, squeeze throttle to test.
7. Cutting: Use proper stance, let chain do the work, avoid tip contact.

Tip: Always cut at full throttle for best performance and chain lubrication.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

Interval	Task
Daily/Before Use	Check chain tension, sharpness; inspect for damage; check fuel/oil levels
Every 10 Hours	Clean air filter; check spark plug; clean cooling fins
Every 20 Hours	Clean spark arrestor; check fuel filter; lubricate bar tip
Every 50 Hours	Replace air filter; check carburetor adjustment; clean clutch drum
Every 100 Hours	Replace spark plug; clean carburetor; check all bolts/nuts
Seasonally	Drain fuel for storage; sharpen chain; replace worn parts

Chain Sharpening

Sharp chain cuts efficiently and safely. Use proper tools.

1. Secure bar in vise. Identify cutter teeth (angled forward).
2. Use round file matching chain pitch (5/32" for .325" chain).
3. File at 30° angle, maintaining original angle. File each tooth equally.
4. Check depth gauges with gauge tool; file to 0.025" below cutter.
5. Clean filed debris; lubricate chain; check tension after sharpening.

WARNING! Wear gloves when handling chain. Dull chain increases kickback risk.

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

1. Drain fuel tank completely or add fuel stabilizer.
2. Run engine until it stops to clear carburetor.
3. Remove chain, clean and oil it. Store separately.
4. Clean entire saw, especially air intake and cooling fins.
5. Store in dry, cool place, protected from dust and moisture.

CAUTION! Never store with fuel in tank for more than 30 days without stabilizer.

Warranty Information

2-year commercial warranty, 5-year consumer warranty from date of purchase. Warranty covers defects in materials and workmanship. Not covered: Normal wear, misuse, improper maintenance, unauthorized repairs. Keep original receipt for warranty claims. For service, contact authorized dealers or manufacturer at 1-800-555-5900 or www.590chainsaw.com/support.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No spark/flooded/old fuel	Check spark plug; use fresh fuel mix; adjust choke
Engine runs poorly	Dirty air filter/clogged fuel filter	Clean/replace air filter; replace fuel filter
Chain won't turn	Brake engaged/clutch worn	Disengage chain brake; inspect clutch assembly
Chain throws oil	Oil port clogged/wrong oil	Clean oil ports; use proper chain oil
Excessive vibration	Loose components/worn mounts	Tighten all bolts; replace anti-vibration mounts
Chain dulls quickly	Cutting dirty wood/improper filing	Avoid ground contact; sharpen correctly

Service: 1-800-555-5900; www.590chainsaw.com/support