CS310ES Chainsaw Manual

The CS310ES is a professional-grade gasoline-powered chainsaw designed for demanding cutting tasks. It features a high-performance engine, anti-vibration system, automatic chain oiler, quick-stop chain brake, and ergonomic design for extended use. Below are key sections covering safety, features, assembly, operation, maintenance, troubleshooting, and specifications.

1. Safety Information 2. Features & Components 3. Assembly & Setup 4. Operation Instructions 5. Maintenance Schedule 6. Chain & Bar Care 7. Troubleshooting 8. Specifications 9. Warranty Information

Safety Information

Read all instructions before use. Always wear protective gear: safety glasses, hearing protection, gloves, chainsaw chaps, and steel-toed boots.

Hazard	Precaution
Kickback	Hold saw firmly with both hands; keep chain sharp; avoid tip contact.
Chain contact	Engage chain brake when not cutting; keep away from body.
Fuel handling	Refuel in well-ventilated area; engine off and cool.
Electrical hazards	Keep away from power lines; assume all lines are energized.
Falling debris	Clear work area; watch for overhead branches.

WARNING! Never operate chainsaw when fatigued or under influence. Keep bystanders at least 15 feet away.

Features & Components

Key components: Engine, guide bar, cutting chain, chain brake, throttle trigger, choke, primer bulb, oil tank, fuel tank.

Feature	Description
Engine displacement	31.8cc 2-stroke gasoline engine
Guide bar length	16 inches (40 cm)
Chain pitch/gauge	0.325 inch / 0.050 inch
Automatic oiler	Lubricates chain during operation
Anti-vibration system	Reduces operator fatigue
Quick-stop chain brake	Stops chain instantly upon kickback
Decompression valve	Easier starting
Air filtration	Dual-stage air filter
Fuel capacity	10.1 fl oz (300 ml)
Oil capacity	5.1 fl oz (150 ml)

Assembly & Setup

Unpack and inspect contents. Assemble on clean, flat surface.

Attach guide bar and chain: Place bar on mounting studs; align chain with drive sprocket; adjust tension.
Fill fuel tank: Mix 50:1 gasoline and 2-cycle oil (89 octane minimum).
Fill oil tank: Use bar and chain oil only.
Check controls: Ensure throttle trigger, choke, and chain brake function properly.

CAUTION! Chain must be properly tensioned—should snap back when pulled from bar. Overtightening damages bar and chain.

Operation Instructions

Starting procedure:

Place saw on ground; engage chain brake.
Set choke to FULL; press primer bulb 5 times.
Pull starter rope until engine fires (1-3 pulls).
Set choke to HALF; pull until engine starts.
Allow 30-second warm-up; disengage chain brake.

Cutting techniques:

Felling: Plan escape path; make notch cut then felling cut.
Limbing: Cut from trunk outward; avoid pinching.
Bucking: Support log; cut from top or use undercut.

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

Maintenance Schedule

Daily: Check chain tension, sharpness, and lubrication; clean air filter; inspect bar for wear.
Weekly: Clean spark arrestor; check fuel filter; tighten all fasteners.
Monthly: Replace spark plug; clean cooling fins; check anti-vibration mounts.
Seasonally: Drain fuel for storage; replace air filter; inspect clutch and sprocket.

Note: Use only genuine replacement parts. Refer to parts list for part numbers.

Chain & Bar Care

Proper chain maintenance ensures performance and safety.

Sharpening: Use round file (5/32 inch) at 30° angle; file all cutters evenly.
Tensioning: Loosen bar nuts; adjust tension screw until chain snaps back.
Bar maintenance: Clean groove weekly; flip bar monthly for even wear.
Lubrication: Check oil flow before each use; adjust oiler if needed.

Tip: Dull chain causes kickback and strains engine. Sharpen when wood chips become fine dust.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No spark/fuel/flooded	Check spark plug; fresh fuel; wait if flooded.
Engine runs poorly	Dirty air/fuel filter	Clean/replace filters; adjust carburetor.
Chain doesn't turn	Brake engaged/clutch	Disengage brake; check clutch springs.
Chain throws oil	Over-oiling	Adjust oiler screw counterclockwise.
Excessive vibration	Loose parts/chain	Tighten fasteners; balance chain.
Chain dulls quickly	Cutting dirt/improper filing	Avoid ground contact; sharpen correctly.

Service: For repairs beyond basic maintenance, contact authorized service center.

Specifications

Engine: 31.8cc 2-stroke, air-cooled
Power output: 1.8 kW (2.4 hp)
Fuel: Gasoline/oil mix 50:1
Bar length: 16 inches (40 cm)
Chain speed: 18.5 m/s at max power
Weight: 10.1 lbs (4.6 kg) without bar/chain
Sound pressure: 105 dB(A)
Vibration level: 4.2 m/s² front handle, 6.5 m/s² rear handle
Warranty: 2 years commercial, 5 years consumer

Warranty Information

CS310ES chainsaw is covered by limited warranty against defects in materials/workmanship. Consumer use: 5 years from purchase date. Commercial use: 2 years from purchase date. Warranty does not cover normal wear, misuse, improper maintenance, or non-genuine parts. Keep original receipt for warranty claims.

For warranty service, contact authorized dealer or call 1-800-555-CHAIN. Register product online at www.cs-saws.com/register.

Note: Using non-approved attachments voids warranty.