Air Filter
Screws
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.
WARNING: Muffler is very hot during and after use. Do not touch the muffler or al- low combustible material such as dry grass or fuel to do so.
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 autho- rized 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. Ignition 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.
LINE REPLACEMENT
1.Remove spool by firmly pulling on tap but- ton.
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 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 notch, leaving 3 to 5 inches (7
7.Insert the line into the exit hole 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 the line 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 fac- tory. Adjustments may be necessary if you no- tice any of the following conditions:
S Engine will not idle when the throttle is released.
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 adjustments. Keep all parts of your body away from the cut- ting 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 increase 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 au- thorized service dealer or call
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