Service and Adjustments, Replace Spark Plug

REPLACE SPARK PLUG

Replace the spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0.025 inch (0.6 mm). Igni- tion timing is fixed and nonadjustable.

1.Twist, then pull off spark plug boot.

2.Remove spark plug from cylinder and dis- card.

3.Replace with Champion RCJ-6Y spark plug and tighten securely with a 3/4 inch (19 mm) socket wrench.

4.Reinstall the spark plug boot.

SERVICE AND ADJUSTMENTS

LINE REPLACEMENT

1.Remove spool by firmly pulling on tap button.

2.Clean entire surface of hub and spool.

3.Replace with a pre-wound spool, or cut two lengths of 12-1/2 feet of 0.080″ (2 mm) di- ameter WEED EATER brand line.

WARNING: Never use wire, rope, string, etc., which can break off and become a dangerous missile.

4.Insert ends of the lines about 1/2 inch (1 cm) into the small holes on the inside of spool.

Spool

Small

Holes

Line exit holes

Line in Notch

Hub

5.Wind the line evenly and tightly onto the spool. Wind in the direction of the arrows found on the spool.

6.Push the lines into the notches, leaving 3 to 5 inches (7 -- 12 cm) unwound.

7.Insert the lines into the the exit holes in the hub as shown in the illustration.

8.Align the notches with the line exit holes.

9.Push spool into hub until it snaps into place.

10.Pull the lines extending outside of the hub to release the lines from the notches.

CARBURETOR ADJUSTMENT

WARNING: Keep others away when making idle speed adjustments. The trimmer head will be spinning during this procedure. Wear your protective equipment and observe all safety precautions.

The carburetor has been carefully set at the factory. Adjustments may be necessary if you notice any of the following conditions:

S Engine will not idle when the throttle is re- leased.

Make adjustments with the unit supported so the cutting attachment is off the ground and will not make contact with any object. Hold the unit by hand while running and making ad- justments. Keep all parts of your body away from the cutting attachment and muffler.

Idle Speed Adjustment

Allow engine to idle. Adjust speed until engine runs without stalling (idle speed too slow).

S Turn idle speed screw clockwise to in- crease engine speed if engine stalls or dies.

STurn idle speed screw counterclockwise to decrease engine speed.

Idle Speed Screw

Air Filter Cover

If you require further assistance or are unsure about performing this procedure, contact an authorized service dealer or call 1--800--554--6723.