VEVOR 4000

VEVOR 40cc 1.3kW Gas Chainsaw (Model 4000) Instruction Manual

Your guide to safe and efficient operation of your VEVOR Chainsaw.

1. Introduction

Thank you for choosing the VEVOR 40cc 1.3kW Gas Chainsaw, Model 4000. This powerful tool is designed for efficient wood cutting, tree pruning, and clearing tasks. Featuring a 40cc engine with 1.8 HP (1.3 kW) and a maximum speed of 12,000 RPM, it is equipped with a 355 mm (14-inch) guide bar capable of cutting wood up to 300 mm (11.8 inches) in diameter. Its robust PA6 + 30% GP composite body ensures durability and resistance to impacts and temperature extremes. This manual provides essential information for safe assembly, operation, and maintenance.

VEVOR 40cc Gas Chainsaw in action, cutting a large log.

Image: The VEVOR 40cc Gas Chainsaw efficiently cutting through a log, demonstrating its power and capability for logging tasks.

2. Safety Instructions

Operating a chainsaw requires extreme caution. Always prioritize safety to prevent serious injury. Read and understand all safety warnings and instructions before use.

2.1 Personal Protective Equipment (PPE)

  • Head Protection: Wear a safety helmet.
  • Eye Protection: Always wear safety glasses or a face shield.
  • Hearing Protection: Use earplugs or earmuffs.
  • Hand Protection: Wear heavy-duty work gloves.
  • Leg Protection: Wear chainsaw protective trousers or chaps.
  • Foot Protection: Wear steel-toed safety boots.

2.2 General Safety Precautions

  • Never operate the chainsaw when fatigued, under the influence of alcohol, drugs, or medication.
  • Keep children, bystanders, and animals at a safe distance (at least 10 meters/33 feet) from the work area.
  • Inspect the chainsaw before each use for loose parts, damage, or fuel leaks. Do not operate a damaged chainsaw.
  • Ensure the chain brake is functional and engaged when starting the chainsaw or moving between cuts.
  • Always hold the chainsaw firmly with both hands, with your thumbs and fingers encircling the handles.
  • Be aware of kickback. Avoid cutting with the tip of the guide bar.
  • Do not operate in poor lighting, wet conditions, or near flammable materials.
  • The chainsaw features an emergency brake that quickly cuts power. The throttle lock and engine switch must be activated simultaneously to reduce accidental starts.
User demonstrating the emergency stop feature on the VEVOR chainsaw.

Image: Demonstrating the emergency stop lever on the chainsaw, highlighting the safety feature to press and stop the chainsaw immediately.

3. Product Overview

Familiarize yourself with the components of your VEVOR Gas Chainsaw.

Diagram of VEVOR 40cc Gas Chainsaw with labeled parts including front handle, chain brake, chain tensioner, guide bar, air flap lever, engine switch, starter handle, air filter, throttle lock, back handle, fuel tank, oil tank, and on/off switch.

Image: Detailed diagram of the VEVOR 40cc Gas Chainsaw, illustrating and labeling its key components for user identification.

  • Front Handle: For stable two-hand operation.
  • Chain Brake: Safety mechanism to stop the chain.
  • Guide Bar: Supports and guides the saw chain.
  • Saw Chain: The cutting element.
  • Chain Tensioner: Adjusts chain tension.
  • Engine Switch: Controls engine power.
  • Starter Handle: Used to manually start the engine.
  • Air Filter: Protects the engine from dust and debris.
  • Throttle Lock: Prevents accidental throttle engagement.
  • Back Handle: For stable two-hand operation.
  • Fuel Tank: For gasoline mixture (310 ml / 0.08 gal capacity).
  • Oil Tank: For chain lubrication oil (210 ml / 0.06 gal capacity).

4. Assembly Instructions

Follow these steps to assemble your chainsaw before first use. Ensure the engine is off and the spark plug cap is removed before assembly.

  1. Open the Side Cover: Locate and open the side cover of the chainsaw.
  2. Install the Wood Tooth: Attach the wood tooth (bumper spike) to the chainsaw body using the provided screws.
  3. Install the Guide Bar: Position the guide bar onto the studs, ensuring it aligns correctly with the chain tensioner pin.
  4. Install the Saw Chain: Carefully place the saw chain around the clutch drum and guide bar, ensuring the cutting edges (teeth) are facing the correct direction for cutting.
  5. Adjust Chain Tension: Close the side cover loosely. Adjust the chain tensioner until the chain is snug but can still be pulled freely by hand. The distance between the chain bottom and guide bar should be 2-4 mm.
  6. Lock the Side Cover: Tighten the nuts on the side cover to secure the guide bar and chain in place.
Six-step visual guide for assembling the VEVOR chainsaw, showing how to open the side cover, install the wood tooth, install the guide bar, install the chain with correct direction, adjust chain tension, and lock the side cover.

Image: Step-by-step visual instructions for assembling the chainsaw, including installing the guide bar and chain, and adjusting tension.

5. Fuel and Oil Mixture

This chainsaw operates on a mixture of unleaded gasoline and 2-stroke engine oil. The correct mixing ratio is crucial for engine longevity.

  • Fuel Mixture Ratio: 40:1 (40 parts unleaded gasoline to 1 part 2-stroke engine oil).
  • Fuel Tank Capacity: 310 ml (0.08 gallons).
  • Chain Oil Tank Capacity: 210 ml (0.06 gallons). Use high-quality chain lubricant oil.

Important: Always mix fuel in a separate, approved container. Never mix fuel directly in the chainsaw's fuel tank. Shake the mixture thoroughly before filling the tank. Use fresh fuel mixture; do not store mixed fuel for more than 30 days.

Diagram showing the fuel tank and chain oil tank capacities and the 40:1 mixing ratio.

Image: Illustration of the chainsaw's fuel and oil tank capacities, emphasizing the 40:1 fuel mixing ratio for optimal performance and lubrication.

6. Starting Procedures

Ensure the chainsaw is on a flat, stable surface and the chain brake is engaged before attempting to start.

6.1 Cold Start

  1. Press the Primer Bulb: Press the primer bulb several times until fuel is visible in the return line.
  2. Close the Choke: Move the choke lever to the 'Closed' position.
  3. Pull the Starter Rope: Pull the starter rope 3-5 times until the engine briefly fires or attempts to start.
  4. Open the Choke: Move the choke lever to the 'Open' position.
  5. Pull the Starter Rope Again: Pull the starter rope again until the engine starts. Allow it to warm up for a few moments before disengaging the chain brake.
Four-step visual guide for cold starting the VEVOR chainsaw, showing pressing the primer bulb, closing the choke, pulling the starter rope, and opening the choke.

Image: Visual steps for performing a cold start on the chainsaw, detailing the use of the primer bulb, choke, and starter rope.

6.2 Hot Start

If the engine is already warm, a hot start is simpler:

  1. Pull the Starter Rope: Pull the starter rope 3-5 times until the engine starts. The choke should remain in the 'Open' position.
Visual guide for hot starting the VEVOR chainsaw, showing pulling the starter rope.

Image: Visual instruction for performing a hot start on the chainsaw, showing the action of pulling the starter rope.

7. Operating Instructions

Always maintain a firm grip with both hands on the chainsaw handles. Ensure your footing is stable and clear of obstacles. Plan your cuts carefully to avoid kickback and falling debris.

  • Cutting Technique: Use the bottom edge of the guide bar for most cuts. Avoid using the tip of the guide bar to prevent kickback.
  • Cutting Capacity: This chainsaw is ideal for cutting trees and branches up to 300 mm (11.8 inches) in diameter.
  • Work Area: Keep your work area clear of debris and ensure no one is within the fall zone of the tree or branch being cut.
  • Fuel Efficiency: The 310 ml fuel tank and 210 ml chain oil tank minimize refueling interruptions, allowing for extended work sessions.
User operating the VEVOR 40cc Gas Chainsaw to cut a large log in a forest setting.

Image: A person using the VEVOR chainsaw to cut a large log, demonstrating proper handling during operation.

8. Maintenance

Regular maintenance ensures the longevity and safe operation of your chainsaw. Always turn off the engine and disconnect the spark plug before performing any maintenance.

  • Chain Sharpening: Keep the saw chain sharp. A dull chain increases effort and risk of kickback. Use a suitable file (included) to sharpen the chain regularly.
  • Chain Tension: Check chain tension frequently. Adjust as needed to ensure the chain is snug but moves freely.
  • Guide Bar Maintenance: Clean the guide bar groove and oil holes. Flip the guide bar periodically to ensure even wear.
  • Air Filter: Clean the air filter regularly, especially in dusty conditions. A clogged air filter can reduce engine performance.
  • Spark Plug: Inspect and clean the spark plug periodically. Replace if worn or fouled.
  • Cooling Fins: Keep the engine's cooling fins clean to prevent overheating.
  • Storage: When storing the chainsaw for extended periods, drain the fuel tank and run the engine until it stops to clear the carburetor. Clean the chainsaw thoroughly.

9. Troubleshooting

This section addresses common issues you might encounter. For problems not listed here, please contact VEVOR customer support.

Problem Possible Cause Solution
Engine does not start No fuel, incorrect choke position, fouled spark plug, clogged fuel filter. Check fuel level and mixture. Adjust choke. Clean/replace spark plug. Clean/replace fuel filter.
Engine runs, but chain does not move Chain brake engaged, incorrect chain tension, clutch issue. Disengage chain brake. Adjust chain tension. Contact service for clutch inspection.
Poor cutting performance Dull chain, incorrect chain tension, worn guide bar. Sharpen chain. Adjust chain tension. Inspect/replace guide bar.
Excessive vibration Loose components, damaged chain/guide bar. Check all fasteners. Inspect chain and guide bar for damage.

10. Specifications

Specification Value
Model Number 4000
Displacement 40 cc
Power 1.8 HP / 1.3 kW
RPM (Max) 12,000 tr/min
Max Cutting Diameter 300 mm / 11.8 inches
Guide Bar Size 355 mm / 14 inches
Fuel Tank Capacity 310 ml / 0.08 gallons
Chain Oil Tank Capacity 210 ml / 0.06 gallons
Main Material PA6 + 30% GP, ADC Aluminum
Product Weight 5.6 kg / 12.35 lbs
UPC 197988881346
VEVOR 40cc Gas Chainsaw with its accessories and a list of key specifications.

Image: The VEVOR chainsaw displayed with its included toolkit and a summary of its technical specifications.

11. What's in the Box

Your VEVOR 40cc Gas Chainsaw package includes the following items:

  • 1 x Gas Chainsaw (Main Unit)
  • 1 x 45# Wood Tooth Insert
  • 2 x Screws
  • 1 x Guide Bar
  • 1 x Chain
  • 1 x Protection Plate
  • 1 x Chainsaw Cover
  • 1 x Small Mixing Bottle 0.5 L
  • 1 x Funnel
  • 1 x Cross Oil Saw Socket 13-19 1.8 mm
  • 1 x Standard Hex Key 3#
  • 1 x Standard Hex Key 4#
  • 1 x Red Handle File
  • 1 x Screwdriver
  • 2 x Rope Earplugs
  • 1 x User Manual

12. Warranty and Support

For warranty information, technical support, or replacement parts, please contact VEVOR customer service directly. Refer to the contact information provided with your purchase or visit the official VEVOR website.

VEVOR Official Store: Visit VEVOR Store on Amazon

© 2026 VEVOR. All rights reserved. This manual is subject to change without notice.

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