MAINTENANCE & REPAIR INSTRUCTIONS

REPLACING THE SPARK PLUG

Use a Champion RDZ19H spark plug (or equivalent). The correct air gap is 0.635 mm (0.025 in.) Remove the plug after every 25 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Grasp the plug wire firmly and pull it from the spark plug.

2.Clean around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8-inch socket counterclockwise.

3.Replace cracked, fouled or dirty spark plug. Set the air gap at 0.635 mm (0.025 in.) using a feeler gauge. See Figure 32.

CAUTION: Do not sand blast, scrape, or clean electrodes. Grit in the engine could damage the cylinder.

4.Install a correctly gapped spark plug in the cylinder head. Tighten by turning the 5/8-inch socket clockwise until snug.

If using a torque wrench torque to:

12.3-13.5 N•m (110-120 in.•lb.) Do not over tighten.

0.635 mm

(0.025 in.)

FIGURE 31

CLEANING

WARNING: To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or perform any maintenance.

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

STORAGE

•Never store the unit with fuel in the tank where fumes may reach an open flame or spark.

•Allow the engine to cool before storing.

•Store the unit locked up to prevent unauthorized use or damage.

•Store the unit in a dry, well-ventilated area.

•Store the unit out of the reach of children.

LONG TERM STORAGE

If the unit will be stored for an extended time, use the following storage procedure:

1.Drain all petrol (gasoline) from the fuel tank into a container. Do not use petrol that has been stored for more than 60 days. Dispose of the old fuel in accordance to Federal, State and Local regulations.

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

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

3.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 ready for storage.

TRANSPORTING

•Allow the engine to cool before transporting.

•Secure the unit while transporting.

•Drain fuel from unit.

•Tighten fuel cap before transporting.

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