Air intake screen
WARNING: Stop your unit before at- tempting to clean the intake screen. DO NOT USE GARDEN HOSE OR PRESSURE WASHER TO CLEAN THIS UNIT!
SClean the intake screen periodically with a nylon brush.
CLEAN THE AIR FILTER
A dirty air filter decreases engine perfor- mance and increases fuel consumption and harmful emissions. Always clean with engine stopped. Clean filter after every 5 hours of op- eration.
1.Clean the air filter cover and the area around the cover to prevent dirt from falling into the carburetor chamber when the cov- er is removed.
2.Remove parts as illustrated. It is not nec- essary to remove the air filter hose from the air filter cover.
NOTE: If the air filter hose becomes unat- tached from the cover or lower handle during cleaning, reattach before attempting to restart the engine or operate the unit.
Air Filter
Hose
Air 
Filter
Air Filter Cover Screws
NOTE: Do not clean filter in gasoline or oth- er flammable solvent to avoid creating a fire hazard or producing harmful evaporative emissions.
3.Wash the filter in soap and water.
4.Allow filter to dry.
5.Add 10
NOTE: FILTER MUST BE OILED!
6.Replace parts.
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.
SERVICE AND ADJUSTMENTS
REPLACING THE LINE
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 the line exit tunnels on each side of the cutting head.
WARNING: Only replace cutting line with engine switch in the OFF position.
1.Remove and discard worn line before installing new line.
2.Use only 0.115″ (3 mm) diameter WEED EATER brand cut length line.
3.Insert one end of the line through the posi- tioning tunnel.
4.Continue to feed line through tunnel until line is centered (leaving equal amounts on each side). See illustration below.
Positioning tunnel
5.Insert ends of line one at a time through the line exit tunnels.
6.Pull the line and make sure the line is ex- tended fully through the tunnels.
Line exit tunnels
7.Correctly installed line will be the same length on both ends.
CARBURETOR ADJUSTMENTS
WARNING: Keep others away when making idle speed adjustments. The trimmer head will be spinning during most of this pro- cedure. Wear your protective equipment and observe all safety precautions. After making adjustments, the trimmer head must not move/spin at idle speed.
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.
SThe trimmer head moves/spins at idle.
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