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.
NOTE: This spark ignition system complies with the Canadian standard
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
For unit to operate properly, the cutting line should be replaced when line becomes worn to less than 3 inches in length from the edge of each side of the cutting head.
WARNING: Use only 0.095 inch (2.4
mm)diameter WEED EATER brand cut length line. Never use wire, rope, string, etc., which can break off and become a dangerous mis- sile.
1.Remove and discard worn line before installing new line.
2.Clean entire surface of cutting head.
3.Insert ends of line into the two guide holes on front of cutting head.
Guide
Hole
Guide
Hole
4.Continue to feed line through the guide holes until the line is fully extended through the side exit holes.
Side Exit Hole
Side Exit
Hole
5.Pull ends of line until line is tight. Correctly installed line will be the same length on both ends.
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 clockwise (looking from bottom of unit).
4.Thread replacement trimmer head onto the shaft by turning counterclockwise. Tighten until secure.
5.Remove the screwdriver.
CARBURETOR IDLE SPEED 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.
To adjust idle speed:
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.
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