CS 5800 Chainsaw Manual

The CS 5800 is a professional-grade gasoline-powered chainsaw designed for heavy-duty cutting, felling, and limbing tasks. It features a high-performance 58cc 2-stroke engine, an 18-inch guide bar with low-kickback chain, automatic chain oiling, anti-vibration system, inertia-activated chain brake, easy-start system, and a range of safety and maintenance features. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 58cc 2-stroke engine, 18-inch guide bar, chain brake, automatic oiler, anti-vibration handles, decompression valve, and easy-start system.

Assembly & Preparation

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

1. Attach guide bar and chain: Place bar on sprocket, loop chain over bar, adjust tension.
2. Fill fuel tank: Use fresh 50:1 gasoline/oil mixture (see Fuel section).
3. Fill oil tank: Use high-quality bar and chain oil.
4. Check chain brake: Ensure front hand guard moves freely and engages brake.

WARNING! Always wear cut-resistant gloves during assembly. Ensure chain is properly tensioned before use.

First-Time Operation

Perform pre-start checks before first use.

1. Check fuel and oil levels: Ensure both tanks are adequately filled.
2. Inspect chain tension: Chain should be snug but pull freely around bar.
3. Clear work area: Remove debris, ensure stable footing, and plan escape path.
4. Start engine: Set choke, engage throttle lockout, pull starter cord firmly.
5. Test chain brake: With engine idling, engage brake to ensure proper function.

CAUTION! Never start chainsaw in enclosed area. Carbon monoxide poisoning risk.

Specifications

• Engine Displacement: 58cc (3.5 cu. in.) 2-stroke.
• Power Output: 3.8 HP @ 9,500 RPM.
• Fuel Capacity: 16.9 fl oz (500 ml).
• Oil Capacity: 8.5 fl oz (250 ml).
• Guide Bar Length: 18 inches (45 cm).
• Chain Pitch: 3/8 inch.
• Chain Gauge: 0.050 inch.
• Weight (dry): 12.8 lbs (5.8 kg).
• Sound Level: 112 dB(A) at operator's ear.
• Vibration Level: 5.2 m/s² front handle, 7.8 m/s² rear handle.

Controls and Components

Main controls: Front handle with chain brake, rear handle with throttle trigger, throttle lockout, choke control, stop switch, decompression valve.

Front Handle: Contains chain brake lever, vibration dampeners. Rear Handle: Throttle trigger, throttle lockout, stop switch. Top Cover: Choke control, decompression valve, air filter cover. Right Side: Chain tensioner, oil filler cap. Left Side: Fuel filler cap, spark plug.

Operation: Pull choke for cold start, push in for warm start. Engage throttle lockout before pulling trigger. Use decompression valve to reduce starting effort.

Fuel & Lubrication

Fuel: Use fresh unleaded gasoline (minimum 89 octane) mixed with 2-stroke oil at 50:1 ratio. Lubrication: Use high-quality bar and chain oil (ISO VG 100).

1. Mix fuel in approved container: 2.6 fl oz oil per 1 gallon gasoline.
2. Fill fuel tank: Clean area around cap, use funnel to prevent spills.
3. Fill oil tank: Use same procedure as fuel.
4. Adjust oil flow: Turn screw clockwise to increase, counterclockwise to decrease.

Tip: Never use automotive motor oil or dirty/gasoline-contaminated bar oil.

Cutting Techniques

Supports felling, limbing, bucking, and pruning operations.

1. Felling: Plan escape path, make notch cut, then back cut leaving hinge.
2. Limbing: Work from trunk outward, keep saw between you and branch.
3. Bucking: Support log off ground, cut from top down, avoid pinching.
4. Pruning: Cut small branches with pulling chain (bottom of bar).
5. Kickback prevention: Maintain firm grip, avoid nose contact, use reduced-kickback chain.
6. Pinch release: Shut off engine, use wedge or lift to free bar.

WARNING! Always cut at full throttle. Never cut above shoulder height.

Safety Features

Chain Brake: Inertia-activated stops chain in milliseconds during kickback. Throttle Lockout: Must be depressed before throttle engages. Right-Hand Guard: Protects from chain breakage. Anti-Vibration: Reduces white finger syndrome. Spark Arrestor: Prevents forest fires.

Maintenance & Storage

Clean after each use. Store with empty fuel tank in dry, locked area.

1. Daily: Clean air filter, check chain tension, sharpen chain.
2. Weekly: Clean spark arrestor, check spark plug gap (0.025 inch).
3. Monthly: Clean fuel filter, replace bar oil filter.
4. Seasonal: Replace fuel lines, clean carburetor, check all fasteners.

CAUTION! Always disconnect spark plug wire before maintenance. Store fuel separately in approved container.

Regulatory Information

EPA Phase III compliant: Meets emission standards for handheld engines. CARB certified for California use. ANSI B175.1 safety standard compliant. Contains FCC Class B digital device. Copyright © 2025 CS Power Equipment; trademarks of CS Industrial Group. For support, visit www.cspowerequipment.com or contact 1-800-555-5800.

Troubleshooting

Reset: Allow engine to cool completely before troubleshooting.

Service: 1-800-555-5800; www.cspowerequipment.com