10
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 dis-
card.
3. Replace with Champion RCJ-6Y spark
plug and tighten securely with a 3/4 inch
(19 mm) socket wrench.
4. Reinstall the spark plug boot.
SERVICE AND ADJUSTMENTS
LINE REPLACEMENT
1. Remove spool by firmly pulling on tap
button.
2. Clean entire surface of hub and spool.
3. Replace with a pre-wound spool, or cut two
lengths of
12-1/2
feet of 0.080
″
(2 mm) di-
ameter WEED EATER brand line.
WARNING:
Never use wire, rope,
string, etc., which can break off and become a
dangerous missile.
4. Insert ends of the lines about 1/2 inch (1
cm) into the small holes on the inside of
spool.
Small
Holes
Spool
Hub
Line in Notch
Line in Notch
Line exit holes
5. Wind the line evenly and tightly onto the
spool. Wind in the direction of the arrows
found on the spool.
6. Push the lines into the notches, leaving 3
to 5 inches (7 -- 12 cm) unwound.
7. Insert the lines into the the exit holes in
the hub as shown in the illustration.
8. Align the notches with the line exit holes.
9. Push spool into hub until it snaps into
place.
10. Pull the lines extending outside of the hub
to release the lines from the notches.
REPLACING THE TRIMMER HEAD
1. Hold the dust cup with a wrench to keep
the shaft from turning while removing and
installing trimmer head.
Dust Cup
2. Remove trimmer head by turning counter-
clockwise (looking from bottom of unit).
3. Thread replacement trimmer head onto the
shaft by turning clockwise.
Only tighten
hand tight!
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.
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.
