homelite chainsaw manual ut10580

The Homelite UT10580 is a gasoline-powered chainsaw designed for general-purpose cutting, pruning, and limbing tasks. It features a 2-stroke engine, automatic oiling system, chain brake, anti-vibration handles, and a lightweight design for user comfort. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 2-stroke gasoline engine, guide bar, cutting chain, automatic chain oiler, chain brake, throttle trigger, choke control, primer bulb, anti-vibration system.

Safety Information

Read all instructions before use. Always wear protective equipment.

1. Personal Protective Equipment (PPE): Wear safety glasses, hearing protection, gloves, chainsaw chaps, and sturdy boots.
2. Clear Work Area: Ensure no bystanders, pets, or obstacles within 15 feet.
3. Inspect Chainsaw: Check for loose parts, chain tension, and damage before each use.
4. Secure Workpiece: Do not cut while holding the saw with one hand or above shoulder height.
5. Kickback Awareness: Be aware of the nose/tip of the bar; do not let it contact objects.

WARNING! Gasoline is flammable. Refuel in a well-ventilated area with engine off and cool. No smoking.

Assembly & Setup

Unpack and inspect all parts. Assembly typically requires attaching the guide bar and chain.

1. Attach Guide Bar: Remove bar cover nuts, position bar over studs, align chain tensioning pin.
2. Install Chain: Place chain over bar sprocket, ensuring cutting teeth face forward on top of bar.
3. Tension Chain: Adjust tension screw until chain snaps back when pulled from bar. Tighten nuts.
4. Fill Oil Tank: Use recommended bar and chain oil. Check for leaks.
5. Fuel Mix: Prepare proper gasoline/oil mixture (typically 50:1 for 2-stroke). Fill fuel tank.

CAUTION! Ensure chain is properly tensioned—too loose may derail; too tight may damage saw.

Specifications

• Engine: 2-stroke gasoline, XX cc displacement.
• Power Output: XX kW / XX HP.
• Fuel Tank Capacity: Approx. XX fl oz.
• Oil Tank Capacity: Approx. XX fl oz.
• Guide Bar Length: XX inches.
• Chain Speed: XX ft/sec at max RPM.
• Idle Speed: Adjustable via carburetor screw.
• Sound Pressure Level: XX dB(A) typical.
• Vibration Level: Front/Rear handle values per standard.
• Weight (dry): Approx. XX lbs.

Controls and Components

Main components: Front handle with throttle trigger, rear handle, choke lever, primer bulb, stop switch, chain brake lever, throttle lockout, tension adjustment screw, fuel/oil caps.

Operation Controls: Throttle trigger (with lockout), choke (for cold start), stop switch (ON/OFF), chain brake (front hand guard).

Maintenance Points: Air filter cover, spark plug, chain tensioner, clutch cover, muffler. Always refer to diagrams in manual for locations.

Fuel & Oil

Use fresh unleaded gasoline with minimum 89 octane. Mix with 2-stroke engine oil at specified ratio (e.g., 50:1).

1. Fuel Mix: Use clean container. Add oil first, then gasoline. Mix thoroughly.
2. Refueling: Stop engine, allow to cool. Clean area around cap. Fill to specified level.
3. Bar & Chain Oil: Use quality oil designed for chainsaws. Check level before each use.

Tip: Do not use old fuel (over 30 days). Dispose of properly. Never use automotive motor oil.

Operation

Starting procedure (cold engine):

1. Place on flat, clear surface. Engage chain brake.
2. Set choke to full position. Press primer bulb 5-6 times.
3. Hold front handle with left hand, place right foot in rear handle.
4. Pull starter rope briskly until engine fires. Move choke to half position.
5. Pull again until engine starts. Blip throttle to disengage choke.
6. Warm up for 30 seconds. Disengage chain brake before cutting.

Cutting Techniques: Use lower part of bar for cutting. Let saw do the work; avoid forcing. Beware of pinch points, kickback.

WARNING! Always operate with both hands. Never cut with the tip of the bar. Watch for falling branches.

Maintenance

Regular maintenance ensures performance and safety.

• Daily: Check chain tension, sharpness, and lubrication. Clean air filter. Inspect for loose fasteners.
• Weekly: Clean cooling fins, spark arrestor screen (if equipped). Check fuel filter.
• Monthly: Clean carburetor air passage. Inspect fuel lines for cracks.
• Seasonal: Replace spark plug, fuel filter. Clean or replace air filter. Check clutch and sprocket.

CAUTION! Disconnect spark plug wire before performing maintenance. Use only Homelite-approved parts.

Chain Sharpening

A sharp chain reduces effort and improves safety.

1. Secure Bar: Clamp bar in vise.
2. File Size: Use correct round file diameter for chain pitch.
3. Filing Angle: Maintain specified angle (typically 30°). Follow existing angle on cutter.
4. File Stroke: File from inside to outside, applying even pressure. Equal number of strokes per cutter.
5. Depth Gauges: Check and file depth gauges with flat file as needed.

Replace chain when cutters are worn beyond repair or damaged.

Storage

For long-term storage (over 30 days):

1. Drain fuel tank and run engine until it stops to clear carburetor.
2. Remove chain, clean, and soak in oil. Clean entire saw.
3. Store in dry, cool place, away from ignition sources.
4. Cover to prevent dust accumulation.

CAUTION! Never store with fuel in tank indoors. Fuel vapors are explosive.

Troubleshooting

Service: For repairs, contact authorized Homelite service center. Use genuine parts.

Support: 1-800-XXX-XXXX; www.homelite.com