Button 
Air Filter
Air Filter Cover
MUFFLER AND SPARK ARREST- ING SCREEN
WARNING: The muffler on this prod- uct contains chemicals known to the State of California to cause cancer.
As your unit is used, carbon deposits build up on the muffler and spark arresting screen. For normal homeowner use, however, the muffler and spark arresting screen will not re- quire any service. After 50 hours of use, we recommend that your muffler be serviced or replaced by your authorized service dealer.
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 discard.
3.Replace with Champion
4.Reinstall the spark plug boot.
SERVICE AND ADJUSTMENTS
REPLACING THE LINE
1.Remove spool by firmly pulling on tap button.
2.Clean entire surface of hub and spool.
3.Replace with a
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 |
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
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.
REPLACING THE CUTTING HEAD
1.Align hole in the dust cup with the hole in the side of the gearbox by rotating the dust cup.
2.Insert a small screwdriver into aligned holes. This will keep the shaft from turning while removing and installing trimmer head.
Screwdriver
3.While holding the screwdriver in position, remove trimmer head by turning clock- wise.
4.Thread replacement trimmer head onto the shaft by turning counterclockwise. Tighten until secure.
5.Remove the screwdriver.
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 released.
8
