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.Press the tabs on the side of the trimmer head and remove cover and spool.
Cover
Tab
Tap Button
2.Remove any remaining line.
3.Clean dirt and debris from all parts. Re- place spool if it is worn or damaged.
4.Replace with a
5.When installing new line on an existing spool, hold the spool as shown in the il- lustration below.
6.Bend the line at the midpoint and insert the bend into the slot in the center rim of the spool. Ensure line snaps into position in the slot.
Slot
Spool
7.With your finger between the lines, wrap the lines evenly and firmly around the spool in a clockwise direction.
8.Position the lines in the guide slots.
Guide Slot
Guide
Slot
9.Insert the ends of the lines through exit holes in the sides of the cover.
10.Place the spool in the cover.
Spool
Cover
11.Make sure the lines are not caught be- tween the rim of the spool and the wall of the cover.
12.Reinstall the spool and cover onto the trimmer head. Push until cover snaps into place.
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.
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