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
4.Reinstall the spark plug boot.
SERVICE AND ADJUSTMENTS
LINE REPLACEMENT
1.Remove spool by firmly pulling on tap but- ton.
2.Clean entire surface of hub and spool.
3.Replace with
WARNING: Never use wire, rope, string, etc., which can break off and become a dangerous missile.
4.Insert one end of the line about 1/2 inch (1 cm) into the small hole on the inside of spool.
Small Hole
Spool
Line in Notch
Hub
Line exit hole
5.Wind the line evenly and tightly onto the spool. Wind in the direction of the arrow found on the spool.
6.Push the line into the notches, leaving 3 to 5 inches (7
7.Insert the lines into the exit holes in the hub as shown in the illustration.
8.Align the notch with the line exit hole.
9.Push spool into hub until it snaps into place.
10.Pull the line extending outside of the hub to release it from the notch.
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
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