8
Air Filter Cover
Air Filter
Screws
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
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. 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 RCJ-6Y spark plug
and tighten securely with a 3/4 inch socket
wrench.
4. Reinstall the spark plug boot.
SERVICE AND ADJUSTMENTS
LINE REPLACEMENT
1. Remove spool by firmly pulling on tap but-
ton.
2. Clean entire surface of hub and spool.
3. Replace with a pre-wound spool, or cut a
length of
20
feet of 0.080
"
(2 mm) diameter
Weed Eater
r
brand line.
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
Hub
Line exit hole
Line in Notch
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 -- 12 cm) unwound.
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
factory. Adjustments may be necessary if you
notice 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 ad-
justments. Keep all parts of your body away
from the cutting 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.
S
Turn idle speed screw counterclockwise to
decrease engine speed.
Air Filter
Cover
Idle Speed
Screw
If you require further assistance or are unsure
about performing this procedure, contact an
authorized
service
dealer
or
call
1--800--554--6723.
