1. Important Safety Instructions
Read all safety warnings and instructions before operating this machine. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- Always wear appropriate personal protective equipment (PPE) including eye protection, hearing protection, gloves, and sturdy footwear.
- Keep children, bystanders, and pets at a safe distance (at least 15 meters/50 feet) from the operating area.
- Do not operate the machine in wet conditions or rain.
- Inspect the work area for objects that could be thrown by the blade, such as rocks, glass, or metal. Remove them before starting.
- Ensure all guards and safety devices are in place and functioning correctly before each use.
- Never operate the machine with a damaged or missing guard.
- Turn off the engine and disconnect the spark plug wire before performing any maintenance, cleaning, or when clearing blockages.
- Handle fuel with extreme care. It is highly flammable. Store fuel in approved containers in a well-ventilated area away from ignition sources.
- Do not refuel a hot engine. Allow the engine to cool down before adding fuel.
- Operate the machine only in well-ventilated outdoor areas. Exhaust fumes contain carbon monoxide.
- Maintain a firm grip on the handles during operation.
- Avoid operating on steep slopes. If operating on a slope, always mow across the face of the slope, never up and down.
- Do not modify the machine in any way. Use only manufacturer-approved replacement parts.
2. Product Overview
The DYRABREST Two-Stroke Hand Push Lawn Mower is a versatile gasoline-powered tool designed for efficient grass trimming and light scarifying in various terrains. It features a robust two-stroke engine and a durable titanium alloy frame.
Figure 2.1: Handle and throttle controls for the lawn mower.
Key Components:
- Engine: Hand-pulled air-cooled two-stroke gasoline engine (49.0 cc displacement).
- Fuel Tank: 0.95L capacity.
- Cutting Head: Equipped with a durable blade for grass trimming.
- Handle: Adjustable height for user comfort, with free throttle control.
- Wheels: Large rear wheels for easy maneuverability; foldable for storage.
- Guard: Protective guard for user safety.
Figure 2.2: Cutting blade and protective guard assembly.
3. Setup and Assembly
The lawn mower requires some assembly before first use. Ensure all parts are present and undamaged before proceeding.
Figure 3.1: All components included in the package.
Assembly Steps:
- Unpack Components: Carefully remove all parts from the packaging and lay them out. Verify against the parts list (not provided, but implied).
- Attach Wheels: Securely attach the large rear wheels to the main frame using the provided hardware.
- Assemble Handlebar: Connect the handlebar sections and attach them to the main frame. Ensure the throttle cable is routed correctly and not pinched.
- Install Cutting Head: Mount the protective guard and the desired cutting blade (or other cutting tool) to the shaft. Ensure all fasteners are tightened securely.
- Connect Engine: Attach the engine unit to the main frame. Ensure all connections are firm.
- Adjust Handle Height: Adjust the handle to a comfortable operating height and secure it.
Note: Refer to the detailed diagrams in the included physical manual for specific fastener locations and torque specifications.
4. Operating Instructions
Fueling the Machine:
- This machine uses a two-stroke engine. It requires a mixture of gasoline and two-stroke engine oil. Refer to the engine manufacturer's recommendations for the correct mixing ratio (typically 25:1 or 50:1).
- Mix fuel in a separate, approved container.
- Ensure the engine is cool before refueling.
- Open the fuel tank cap slowly to release any pressure.
- Fill the fuel tank carefully, avoiding spills. Do not overfill.
- Securely close the fuel tank cap.
Starting the Engine:
- Place the machine on a flat, stable surface.
- Ensure the cutting head is clear of any obstructions.
- Set the choke lever to the "START" or "CHOKE" position (if applicable).
- Press the primer bulb several times until fuel is visible in the bulb.
- Hold the machine firmly with one hand on the handle.
- Pull the starter cord slowly until resistance is felt, then pull sharply and quickly. Repeat until the engine starts.
- Once the engine starts, gradually move the choke lever to the "RUN" position.
- Allow the engine to warm up for a few moments before beginning operation.
Operating the Mower:
- Maintain a firm grip on the handles.
- Push the mower forward at a steady pace. Do not force the machine through thick vegetation.
- For best results, overlap cutting paths slightly.
- Adjust the throttle to control engine speed and cutting power.
Figure 4.1: Mowing tall grass with the hand push lawn mower.
Stopping the Engine:
- Release the throttle trigger.
- Press the engine stop switch to the "OFF" position.
- Wait for all moving parts to come to a complete stop before approaching the cutting head.
5. Maintenance
Regular maintenance ensures optimal performance and extends the life of your lawn mower. Always ensure the engine is off and cool, and the spark plug wire is disconnected before performing any maintenance.
After Each Use:
- Clean the Machine: Remove grass clippings, dirt, and debris from the engine, cutting head, and guards. Use a brush or compressed air. Do not use water directly on the engine.
- Inspect Blade: Check the cutting blade for sharpness, damage, or cracks. Replace if necessary.
- Check Fasteners: Ensure all nuts, bolts, and screws are tight.
Periodic Maintenance:
- Spark Plug: Inspect and clean the spark plug regularly. Replace if worn or fouled.
- Air Filter: Clean or replace the air filter as needed, especially in dusty conditions. A clogged air filter can reduce engine performance.
- Fuel Filter: Check and replace the fuel filter periodically.
- Gearbox Lubrication: Refer to the engine manual for lubrication requirements of the gearbox (if applicable).
Storage: When storing the machine for an extended period, drain the fuel tank or use a fuel stabilizer to prevent fuel degradation. Clean the machine thoroughly and store it in a dry, well-ventilated area.
6. Troubleshooting
This section provides solutions to common operational issues. For problems not listed here, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine does not start | No fuel or incorrect fuel mixture Spark plug fouled or damaged Choke not set correctly Engine flooded | Check fuel level and mixture Clean or replace spark plug Adjust choke lever Remove spark plug, pull starter several times, clean and reinstall plug |
| Engine runs poorly or lacks power | Clogged air filter Incorrect fuel mixture Dull or damaged blade | Clean or replace air filter Ensure correct fuel-oil ratio Sharpen or replace blade |
| Excessive vibration | Damaged or unbalanced blade Loose fasteners | Inspect and replace blade if necessary Check and tighten all fasteners |
| Smoke from engine | Incorrect fuel-oil mixture (too much oil) Engine overheating | Verify correct fuel-oil ratio Clean cooling fins, ensure proper ventilation |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | DYRABREST |
| Power Source | Gas Powered (Two-Stroke) |
| Engine Displacement | 49.0 cc |
| Rated Speed | 6500-7000 r/Min |
| Starting Engine Power | 1.8 Kw |
| Fuel Tank Volume | 0.95 L |
| Fuel Consumption | ≤0.7 L/H |
| Material | Titanium Alloy (Main Beam), Aluminum |
| Item Weight | 52.91 Pounds (approx. 24 kg) |
| Cutting Width | 276 Inches (approx. 701 cm) - Note: This value seems unusually large for a hand-push mower and may refer to a different measurement or be a typo. Please verify with manufacturer. |
| Operation Mode | Manual (Hand Push) |
| Assembly Required | Yes |
8. Warranty and Support
For warranty information, please refer to the documentation included with your purchase or contact the retailer. This product may be eligible for extended protection plans, which can be purchased separately.
For technical support, replacement parts, or further assistance, please contact DYRABREST customer service through their official channels or the retailer from whom you purchased the product.
Manufacturer: Shibel store
