sunjoe TRJ608E - User Manual

The Sun Joe TRJ608E is an electric grass trimmer designed for cutting grass and weeds quickly and easily. It operates by rotating a nylon trimming line at high speed to cut vegetation. The trimmer is equipped with a semi-automatic line feeding system, which automatically advances the trimming line every time the trimmer is stopped and restarted. Excess line is cut by a built-in line trimming blade. Users can also manually advance the line using a line feed button. The device is double-insulated, eliminating the need for a separate grounding system.

Important Technical Specifications:

Model: TRJ608E
Rated Voltage: 120 V ~ 60 Hz
Motor: 2.8 A
No Load Speed: 12,500 ± 10% rpm
Cutting Diameter: 10 in. (25.4 cm)
Line Diameter: 0.063 in. (1.6 mm)
Trimming Line Length: 9.8 ft (3 m)
Spool Advance: Semi-auto feed
Net Weight: 2.6 lbs (1.2 kg)
Gross Weight: 3.7 lbs (1.7 kg)

Usage Features:

The trimmer is designed for ease of use and safety.

Assembly: The manual provides detailed instructions for fitting the handle shaft, pole shaft, trimmer head shaft, support bracket, and safety guard. It emphasizes ensuring all shafts are fully installed and secured with provided screws before operation.
Starting + Stopping: To operate, the user presses and holds the ON/OFF trigger switch. Releasing the trigger stops the trimmer.
Trimming Technique:
- The trimmer should be held with the right hand on the handle, the arm resting on the support bracket, and the left hand on the trimmer pole, at approximately hip height.
- It is recommended to move the trimmer slowly for best cutting action, especially against walls, fences, and in high grass, using the tip of the high-speed nylon line.
- Avoid dragging the trimmer and string spool cover on the ground.
- Only trim when grass and weeds are dry.
- For optimal cutting performance, hold the trimmer at an angle of approximately 10-30 degrees to the work area and swing it slowly from side to side.
- To prevent overloading, take small "bites" of grass, working from top to bottom.
- Do not operate the trimmer in a tree, on a ladder, or on a scaffold due to extreme danger.
- Do not use when the temperature is below 50°F (10°C) as the nylon line is more prone to breaking.
Advancing Trimmer Line: The semi-automatic feed advances the line when the trimmer stops and restarts. Manual advancement is possible by turning off the machine, unplugging it, and repeatedly pressing and releasing the line feed button while gently pulling the line until it reaches the trimming blade. Each press releases 0.2 inches (5 mm) of line.
Extension Cord Management: An extension cord restraint is provided to prevent accidental disconnection during use. The extension cord should be looped through the restraint and connected to the appliance cord.
Safety Precautions: The manual highlights numerous safety instructions, including wearing eye and hearing protection, safety footwear, snug-fitting clothing, and protective gloves. It warns against using the trimmer in damp/wet conditions, in rain, or near children and bystanders (who should be kept at least 50 feet away). It also advises against forcing the tool, overreaching, operating while tired or under the influence, and touching the cutting line or device with hands. The safety guard is critical and must always be in place.

Maintenance Features:

Regular maintenance is crucial for performance and safety.

General Care:
- Always switch off and unplug the product before inspection, maintenance, or cleaning.
- Clean the trimmer with a dry cloth; plastic parts can be cleaned with mild soap and a damp rag.
- Store the trimmer indoors in a dry, high, or locked-up place, out of reach of children, and away from extreme temperatures.
- Do not store the trimmer resting against the floor; hang it by the upper handgrip to prevent deformation of the guard.
- Keep cutting edges sharp and clean.
- Inspect the trimmer periodically for damage and replace parts if necessary.
- Keep the handle dry, clean, and free from oil and grease.
Spool Replacement + Clearing Jams:
- Unplug the extension cord before changing the trimming line.
- To remove the spool, press both release tabs on the spool cover and pull the cover and spool straight off.
- Remove any broken line, wind remaining line tightly, or insert a new pre-wound spool.
- For a new spool, unhook the line end and insert it through the eyelet on the machine.
- Insert the spool into the machine, pressing until it clicks in place. Adjust line length by pulling or rotating the spool counter-clockwise. Replace the spool cover securely.
- The manual strongly recommends purchasing pre-wound spools (Model TRJ608E-RS-6PK) from sunjoe.com to ensure proper winding and prevent malfunction of the semi-automatic feed system.
Winding the Line (Self-Winding):
- If self-winding, measure and cut a 9.8 ft (3 m) piece of 0.063 in. (1.6 mm) trimming line.
- Insert one end into the small hole inside the spool, bend it 180 degrees, and wind the line tightly around the spool according to the arrows, applying slight tension.
- Ensure the line does not extend past the line trimming blade; adjust by turning the spool counter-clockwise if too much line is fed out.
Damaged Parts: Regularly check for damaged parts, especially the power cord, guard, and spool cover. Any damaged parts should be repaired or replaced by an authorized service center.
Electrical Safety: Ensure the insulation of electrical cables is intact. Use only UL-, CSA-, or ETL-rated extension cords suitable for outdoor, all-weather use (e.g., SW-A, SOW-A, STW-A, STOW-A, SJW-A, SJOW-A, SJTW-A, or SJTOW-A) and within specified length limits (up to 100 ft). Use a polarized extension cord and ensure the mains voltage matches the unit's rating label. Ground fault circuit interrupter (GFCI) protection is recommended.