rok chainsaw manual

The ROK Chainsaw is a professional-grade power tool designed for efficient cutting of wood, featuring a high-performance engine, automatic chain oiling, safety mechanisms, and ergonomic design. Below are key sections covering safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: High-torque 2-stroke engine, Automatic chain oiler, Safety chain brake, Anti-vibration handles, Quick-stop inertia brake, Chain tensioning system.

Feature	Description
Engine Type	2-stroke gasoline engine, air-cooled
Guide Bar Length	Available in 14", 16", 18" options
Chain Oil Capacity	Integrated 300ml oil tank
Safety Chain Brake	Automatically stops chain upon kickback
Anti-Vibration System	Reduces operator fatigue during extended use
Chain Tension Adjustment	Tool-free side-access tensioner
Fuel Tank Capacity	500ml for mixed gasoline/oil
Throttle Lock	Prevents accidental throttle engagement
Spark Arrestor	Standard muffler with spark screen
Weight	4.8 kg (without bar and chain)

Assembly & Preparation

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

1. Attach guide bar and chain: Loosen bar nuts, position chain on bar, align with drive sprocket, tighten nuts.
2. Fill fuel tank: Use fresh gasoline mixed with 2-stroke oil at 50:1 ratio.
3. Fill chain oil tank: Use recommended bar and chain oil.
4. Check chain tension: Chain should snap back when pulled from bar.

WARNING! Always wear protective gear (gloves, goggles, helmet, ear protection) during assembly and operation. Ensure chain brake is engaged when not cutting.

First-Time Operation

Complete pre-operation checks before starting engine.

1. Check fuel and oil levels: Ensure adequate supply.
2. Inspect chain sharpness and tension: Adjust if necessary.
3. Clear work area: Remove obstacles and ensure stable footing.
4. Start engine: Place on ground, engage chain brake, set choke, pull starter cord firmly.
5. Warm up: Allow engine to run at idle for 30 seconds before cutting.

CAUTION! Never operate chainsaw above shoulder height or with one hand. Maintain firm grip with both hands at all times.

Specifications

• Engine Displacement: 45cc 2-stroke.
• Power Output: 2.2 kW at 9000 RPM.
• Fuel Mix Ratio: 50:1 (gasoline to 2-stroke oil).
• Chain Pitch: 3/8" low-profile.
• Chain Gauge: 0.050".
• Sound Level: 105 dB(A) at operator's ear.
• Vibration Level: Front handle: 3.5 m/s²; Rear handle: 4.2 m/s².
• Warranty: 2 years limited warranty on engine and parts.

Controls and Functions

Main controls located on top and rear handles.

Top Handle: Throttle trigger, Throttle lockout, Chain brake lever. Rear Handle: Start/stop switch, Choke control, Primer bulb. Side Panel: Chain tension adjuster, Oil filler cap, Fuel filler cap.

Operation: Squeeze throttle lockout and trigger simultaneously to engage chain. Release to idle. Push chain brake lever forward to engage safety brake. Pull toward operator to disengage.

Cutting Techniques

Proper technique ensures safety and efficiency.

1. Felling trees: Use notch cut and back cut method. Establish escape path first.
2. Limbing: Cut branches from bottom to top, using bar tip carefully.
3. Bucking: Support logs properly; cut from top down or use undercut for pinned logs.
4. Pruning: Use light touch; let chain do the work without forcing.

Tip: Keep chain sharp - dull chains require more force and increase kickback risk. Sharpen every 2-3 hours of use.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

1. Daily: Clean air filter, check chain tension and sharpness, inspect bar for wear.
2. Weekly: Clean spark arrestor, check spark plug gap (0.025"), lubricate throttle linkage.
3. Monthly: Clean fuel filter, replace chain oil filter, inspect anti-vibration mounts.
4. Seasonally: Replace fuel lines if cracked, clean carburetor, check clutch drum wear.
5. Annually: Professional servicing recommended for engine tune-up and safety inspection.

WARNING! Always disconnect spark plug wire before performing maintenance. Allow engine to cool completely.

Safety Features

Chain Brake: Stops chain within 0.15 seconds of kickback detection. Throttle Lockout: Prevents accidental throttle engagement. Right-Hand Guard: Protects hand from broken chain. Chain Catcher: Prevents broken chain from striking operator. Low-Kickback Chain: Reduces kickback force by 40% compared to standard chains.

Storage & Transport

For storage: Drain fuel tank or add fuel stabilizer. Run engine dry of carburetor fuel. Clean entire saw. Apply oil to bar and chain. Store in dry place with bar cover installed.

CAUTION! Transport with chain brake engaged and bar cover installed. Secure in vehicle to prevent movement. Never carry with engine running.

Regulatory Information

EPA Phase III compliant for emissions. Meets ANSI B175.1 safety standards. CARB certified for sale in California. Contains FCC Part 15 Subpart B compliant ignition system. Copyright © 2025 ROK Power Tools; all rights reserved. For technical support, visit www.rokpowertools.com or contact 1-800-555-ROK5.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel issues, spark plug, flooded engine	Check fuel mix, clean spark plug, wait 10 minutes if flooded.
Engine runs then dies	Clogged fuel filter, carburetor issues	Replace fuel filter, clean carburetor jets.
Chain won't turn	Chain brake engaged, clutch worn	Disengage chain brake, inspect clutch assembly.
Excessive vibration	Loose components, unbalanced chain	Tighten all bolts, balance chain or replace.
Chain throws oil	Overfilled oil tank, wrong oil viscosity	Drain to proper level, use recommended oil.
Poor cutting performance	Dull chain, improper tension	Sharpen chain, adjust tension correctly.
Chain comes off bar	Worn bar, improper tension	Replace bar if grooved, maintain proper tension.

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

Service: 1-800-555-ROK5; www.rokpowertools.com/support