Replacing the Spark Plug, Cleaning, Storage

MAINTENANCE AND REPAIR INSTRUCTIONS

REPLACING THE SPARK PLUG

Use a Champion RCJ-6Y spark plug (or equivalent). Correct air gap is 0.025 in. (0.655 mm). Remove plug after every 50 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Pull the wire off of the spark plug.

2.Clean around the spark plug and remove it from the cylinder head. Use a 5/8" socket to remove the plug.

CAUTION: Replace a cracked, fouled or dirty spark plug. Do not sand blast, scrape, or clean electrodes because the engine could be damaged by grit entering the cylinder.

3.Set the air gap at 0.025 in. (0.655 mm) using a wire feeler gauge (Fig. 30). Install a correctly gapped spark plug into the cylinder head. Torque to 110-120 in•lb (12.3-13.5 N•m).

0.025 inch

(0.655 mm)

Fig. 30

CLEANING

WARNING: Always turn off your trimmer before you clean or perform any maintenance on it.

Use a small brush to clean off the outside of the unit. Do not use strong detergents on plastic housing or handle. They can be damaged by household cleaners that contain aromatic oils such as pine and lemon, and by solvents such as kerosene. Wipe off any moisture with a soft cloth.

STORAGE

If the unit will be stored for an extended period of time, use the following storage procedure.

1.Drain all fuel from the fuel tank and drain into a container with the same 2-cycle fuel mixture. Do not use fuel that has been stored for more than 60 days. Dispose of the old fuel/oil mix in a safe manner and use a fresh mix.

2.Start the engine and allow it to run until it stalls. This ensures that all fuel has been drained from the carburetor.

3.Allow the engine to cool. Remove the spark plug and put approximately 1 oz (30 ml) of any high quality motor oil or 2-cycle oil into the cylinder. Pull the starter rope slowly to distribute the oil. Reinstall the spark plug.

4.Thoroughly clean the unit and inspect for any loose or damaged parts. Repair or replace damaged parts and tighten loose screws, nuts or bolts. The unit is now ready for storage.

5.To prevent unauthorized use or damage, lock up and store the unit in a dry, well-ventilated area.

NOTE: Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage.

ACCESSORIES/REPLACEMENT PARTS

2-Cycle Oil. . . . . . . . . . . . . . . . . . . . . . . . . 147543

Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . 181765

Replacement Line . . . . . . . . . . . . . . . . . . . 181472

Replacement Line Cartridge . . . . . . . . . . . 181460

Inner Reel Spring . . . . . . . . . . . . . . . . . . . 181465

Bump Head Knob Assembly . . . . . . . . . . . 181468

Fuel Cap. . . . . . . . . . . . . . . . . . . . . . . . . . 180000

Shoulder Strap . . . . . . . . . . . . . . . . . . . . . 682075

Click-Link Coupler . . . . . . . . . . . . . . . . . . 181616