PowerSmart 22-Inch Walk Behind String Trimmer Mower

1. Introduction

This manual provides essential information for the safe operation, assembly, maintenance, and troubleshooting of your PowerSmart 22-Inch Walk Behind String Trimmer Mower. Please read this manual thoroughly before operating the machine to ensure proper use and to prevent injury or damage.

The PowerSmart Walk Behind String Trimmer Mower is designed for clearing tough weeds, tall grass, and brush in areas inaccessible to traditional lawn mowers. It features a powerful 161cc 4-stroke engine and large wheels for maneuverability.

2. Safety Information

WARNING: Failure to follow these safety instructions could result in serious injury or death.

• Always wear appropriate personal protective equipment (PPE), including eye protection, hearing protection, long pants, and sturdy footwear.
• Keep bystanders, children, and pets at least 50 feet (15 meters) away from the operating area.
• Inspect the area before operation and remove any objects that could be thrown by the trimmer line.
• Do not operate the trimmer mower in wet conditions or on steep slopes where you cannot maintain stable footing.
• Turn off the engine and disconnect the spark plug wire before performing any maintenance, adjustments, or clearing clogs.
• Fuel is highly flammable. Handle fuel in a well-ventilated area, away from sparks or open flames.
• Never leave the running machine unattended.

3. Package Contents

Verify that all items are present in the package:

• PowerSmart Walk Behind String Trimmer Mower Unit
• Funnel (1)
• Wrench (2)
• Spark Plug Wrench (1)
• 0.155" Trimmer Line (10 pieces)
• User Manual

Image: Overview of the PowerSmart Walk Behind String Trimmer Mower with its components and included accessories like wrenches, funnel, and trimmer line.

4. Assembly

The trimmer mower requires minimal assembly. Follow these steps:

1. Unfold the Handle: Carefully unfold the handle assembly until it locks into the operating position. Ensure all locking mechanisms are securely engaged.
2. Attach Control Cables: Connect any loose control cables (e.g., engine start/stop control) to their designated points on the handle and engine. Refer to the diagrams in your printed manual for specific routing.
3. Check Wheels: Ensure the large 14-inch wheels are securely attached and rotate freely.
4. Install Trimmer Line: Insert the 0.155" trimmer lines into the cutting head as per the easy line replacement design.

Image: The PowerSmart Trimmer Mower showcasing its foldable handle design for convenient storage and quick unfolding.

5. Operating Instructions

5.1 Fueling the Engine

This trimmer mower uses a 4-stroke engine. Use fresh, unleaded gasoline with an octane rating of 87 or higher. Do not mix oil with gasoline. Fill the engine with appropriate 4-stroke engine oil (e.g., 10W-30) before first use and check levels before each operation.

• Locate the fuel tank cap and oil fill cap.
• Fill the fuel tank with gasoline using the provided funnel. Do not overfill.
• Add the correct amount of 4-stroke engine oil to the oil fill port. Refer to the engine's dipstick for the correct level.

5.2 Starting the Engine

1. Ensure the spark plug wire is securely connected.
2. Move the choke lever to the "CHOKE" position (cold start).
3. Press the primer bulb 3-5 times until fuel is visible in the bulb.
4. Hold the engine start/stop control lever against the handle.
5. Pull the recoil start handle firmly and smoothly until the engine starts.
6. Once the engine starts, gradually move the choke lever to the "RUN" position.

Image: The PowerSmart Walk Behind String Trimmer Mower from a front-side view, ready for operation, highlighting its 20-inch cutting path.

5.3 Operating the Trimmer Mower

• Walk at a steady pace, allowing the trimmer line to cut effectively.
• Overlap cutting swaths slightly to ensure complete coverage.
• Avoid hitting hard objects like rocks, fences, or concrete, as this can damage the trimmer line and cutting head.
• For dense growth, make multiple passes, gradually reducing the height.

Image: A person operating the PowerSmart Walk Behind String Trimmer Mower in an area with tall grass, demonstrating its use for clearing overgrown areas.

5.4 Stopping the Engine

Release the engine start/stop control lever. The engine should stop automatically. If it does not, move the engine switch to the "OFF" position.

6. Maintenance

Regular maintenance ensures optimal performance and extends the life of your trimmer mower.

• After Each Use: Clean debris from the cutting head, engine, and wheels. Check trimmer line for wear and replace if necessary.
• Engine Oil: Check engine oil level before each use. Change oil after the first 5 hours of operation, then every 25 hours or annually.
• Air Filter: Clean the air filter every 10-20 hours of operation, or more frequently in dusty conditions. Replace if damaged.
• Spark Plug: Inspect the spark plug annually or every 50 hours. Clean or replace as needed.
• Storage: For long-term storage, drain the fuel tank or use a fuel stabilizer. Clean the machine thoroughly and store in a dry, protected area.

Image: A close-up view of the large 14-inch wheels of the PowerSmart Trimmer Mower, designed for easy maneuverability over uneven terrain.

7. Troubleshooting

8. Specifications

• Model: DB62221
• Engine Type: 161cc 4-Stroke OHV Gas Engine
• Cutting Swath: 22 inches
• Trimmer Line Diameter: 0.155 inches (heavy-duty)
• Wheels: 14-inch high wheels
• Product Dimensions: 98.81 x 55.88 x 127 cm (38.9 x 22 x 50 inches)
• Weight: 24.49 kg (54 lbs)
• Manufacturer: Amerisun Inc.

Image: A detailed view of the 161cc 4-cycle engine of the PowerSmart Trimmer Mower, highlighting its power unit.

Image: A close-up of the heavy-duty trimmer line and cutting head assembly on the PowerSmart Trimmer Mower, showing the robust design for tough vegetation.

9. Warranty and Support

This PowerSmart Walk Behind String Trimmer Mower comes with a 2-year limited warranty. For warranty claims, technical support, or to order replacement parts, please contact Amerisun Inc. customer service.

• Manufacturer: Amerisun Inc.
• Address: 925 W THORNDALE AVE, ITASCA, IL 60143-1302 US
• Phone: 1-800-791-9458, 1-888-293-0024 (Mon-Fri 9-5 EST)

Please have your model number (DB62221) and purchase information ready when contacting support.