1. Introduction
Thank you for choosing the VEVOR 43 CC Gas Powered String Trimmer. This manual provides important information for the safe assembly, operation, maintenance, and troubleshooting of your string trimmer. Please read this manual thoroughly before using the product and retain it for future reference.
This 2-stroke, gas-powered string trimmer is designed for efficient grass trimming, weed wacking, and light brush cutting in various outdoor environments. Its versatile design allows for use with both a nylon trimmer head and a 3T blade.
2. Safety Instructions
WARNING: Failure to follow these safety instructions can result in serious injury or death.
- Always wear appropriate personal protective equipment (PPE), including eye protection (goggles), ear protection (ear muffs), heavy-duty gloves, long pants, and sturdy footwear.
- Keep bystanders, children, and pets at least 50 feet (15 meters) away from the operating area.
- Inspect the work area for debris, rocks, or other objects that could be thrown by the cutting head. Remove them before starting.
- Do not operate the trimmer in wet conditions or rain.
- Ensure all guards and shields are properly installed before operation.
- Handle fuel with extreme care. Mix and refuel outdoors in a well-ventilated area, away from sparks or open flames.
- Never operate the trimmer if you are fatigued, under the influence of alcohol, drugs, or medication.
- Turn off the engine and disconnect the spark plug wire before performing any maintenance, cleaning, or when clearing blockages.
- Store the trimmer and fuel in a cool, dry, well-ventilated area, away from heat sources and open flames.
3. Package Contents
Carefully unpack all items and ensure you have received the following components:

This image displays the VEVOR 43 CC Gas Powered String Trimmer along with its included accessories, such as the shoulder strap, fuel mixing bottle, various tools, safety gear, and different cutting heads.
- 1x VEVOR 43 CC String Trimmer (Model CN-430-2)
- 1x Double Shoulder Strap
- 1x Large Fuel Mixing Bottle
- 1x Open-End Wrench
- 2x Hex Keys
- 1x Screwdriver
- 1x Gloves
- 1x Ear Muffs
- 1x Goggles
- 2x Cable Ties
- 1x Trimmer Head (Nylon)
- 1x Trimmer Line
- 1x 3T Blade
- 1x 40T Standard Blade
- 1x 40T Alloy Blade
- 1x Funnel
- 1x User Manual (this document)
4. Setup and Assembly
4.1 Assembling the Shaft and Handle
The trimmer features a detachable split shaft for convenient storage and transport. Connect the two shaft sections securely. Attach the U-shaped handle to the shaft at a comfortable operating position, ensuring all fasteners are tightened.

This image illustrates the fully assembled string trimmer, highlighting the U-shaped handle, detachable split shaft, and debris shield. Ensure these components are correctly attached before use.
4.2 Attaching the Debris Shield and Cutting Head
Attach the debris shield to the lower shaft section. This shield protects the operator from flying debris. Then, select your desired cutting head (nylon trimmer head or 3T blade) and securely attach it according to the instructions provided with the specific cutting attachment. Ensure the cutting head is firmly fastened before operation.

This image demonstrates the versatility of the trimmer, showing the grass string head for lawn trimming, the 3T blade for small shrub pruning, and the 40T blade for cutting thick branches. Choose the appropriate head for your task.
4.3 Fuel Mixing
This trimmer requires a fuel mixture of gasoline and 2-stroke engine oil at a ratio of 40:1. Use fresh, unleaded gasoline with an octane rating of 89 or higher. Use high-quality 2-stroke engine oil specifically designed for air-cooled engines.
- Pour the required amount of 2-stroke oil into the mixing bottle.
- Add the corresponding amount of gasoline to achieve the 40:1 ratio.
- Securely close the mixing bottle and shake it thoroughly to ensure a proper mix.
- Using the provided funnel, carefully pour the fuel mixture into the trimmer's fuel tank. Do not overfill.

This image shows the process of filling the 1150ml fuel tank with the correct 40:1 fuel and oil mixture, which helps ensure smooth starting and operation.
4.4 Adjusting the Shoulder Strap
Attach the double shoulder strap to the trimmer. Adjust the straps to distribute the weight evenly and comfortably across your shoulders and back. This reduces fatigue during extended use and provides better control of the tool.

This image illustrates a user wearing the adjustable double shoulder strap, demonstrating how it helps in comfortably operating the trimmer and reaching shrubs without excessive bending.
5. Operating Instructions
5.1 Starting the Engine
Follow these steps for a quick and reliable engine start:

This image provides a visual, step-by-step guide for starting the trimmer engine, from mixing fuel to pulling the starter rope and controlling the throttle.
- Mix fuel and pour in: Ensure the fuel tank contains the correct 40:1 fuel mixture.
- Turn the switch to "On": Locate the power switch on the handle and set it to the "On" position.
- Prime the bulb 5-8 times: Press the primer bulb repeatedly until fuel is visible and flowing through the clear lines.
- Close the choke: Move the choke lever to the "Closed" or "Start" position.
- Pull the starter rope: With a firm grip, pull the starter rope quickly and smoothly until the engine attempts to start (usually 1-3 pulls).
- Open the choke: Once the engine attempts to start or fires, immediately move the choke lever to the "Open" or "Run" position.
- Pull the starter rope again: Pull the starter rope again until the engine starts and runs smoothly.
- Use the handle switch to control the throttle: Allow the engine to warm up for a few seconds, then use the throttle lever on the handle to control engine speed.
5.2 Operating the Trimmer
- Maintain a firm grip on the handle with both hands.
- Keep the cutting head away from your body and legs.
- Use a sweeping motion to cut grass and weeds.
- For the nylon trimmer head, the bottom button allows for quick line release. Tap the head gently on the ground while the engine is running at full throttle to advance the line.
- When using the 3T blade, be aware of kickback and maintain a stable stance.
- Avoid hitting hard objects like fences, rocks, or concrete, as this can damage the cutting head and cause kickback.
- Always turn off the engine before setting the trimmer down or leaving it unattended.
6. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your VEVOR string trimmer. Always turn off the engine and disconnect the spark plug wire before performing any maintenance.
- Cleaning: After each use, clean the trimmer housing, cutting head, and air intake vents. Remove any grass, dirt, or debris.
- Air Filter: Check the air filter regularly (every 5-10 hours of operation). Clean or replace it if it is dirty or clogged. A dirty air filter can reduce engine performance.
- Spark Plug: Inspect the spark plug every 20-30 hours of operation. Clean off any carbon deposits or replace if worn. Ensure the gap is correct according to specifications.
- Fuel Filter: The fuel filter, located inside the fuel tank, should be checked periodically and replaced if clogged.
- Cutting Head: Inspect the nylon trimmer head and blades for wear or damage. Replace worn trimmer line and damaged blades promptly.
- General Inspection: Periodically check all nuts, bolts, and fasteners for tightness. Inspect the fuel lines for cracks or leaks.
7. Troubleshooting
If you encounter issues with your trimmer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine does not start |
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| Engine runs poorly or lacks power |
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| Trimmer line does not advance |
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8. Specifications
The following are the technical specifications for the VEVOR 43 CC Gas Powered String Trimmer (Model CN-430-2):

This image provides a visual overview of the trimmer's dimensions and key specifications, including engine displacement, power, and cutting diameter.
- Model Number: CN-430-2
- Engine Displacement: 43 CC
- Power: 1.6 HP / 1.25 kW
- Engine Speed: 7500 RPM (Max. 9500 RPM)
- Max Cutting Diameter: 17 inches / 430 mm
- Fuel Tank Capacity: 0.25 gal / 1150 ml
- Fuel & Oil Mixture Ratio: 40:1
- Item Weight: 19.62 lbs / 8.9 kg
- Overall Dimensions (L x W): 73.6" L x 24.4" W
- Power Source: Gas Powered
- Brand: VEVOR
9. Warranty and Support
VEVOR products are designed for durability and performance. For specific warranty information regarding your VEVOR 43 CC Gas Powered String Trimmer, please refer to the warranty card included with your purchase or visit the official VEVOR website.
If you require technical assistance, have questions about operation, or need to report a defect, please contact VEVOR customer support. Contact details can typically be found on the VEVOR website or on your purchase documentation.
VEVOR Official Website: www.vevor.com





