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7
REPLACE SPARK PLUG
Replace the spark plug each year to ensure
the engine starts easier and runs better. Set
spark plug gap at0.025 inch. Ignition timing is
fixed and nonadjustable.
1. T w ist, then pull off spark plug boot.
2. Remove spark plug fr om cylinder and dis-
card.
3. Replace with Champion RC J- 6Y spark plug
and tighten securely w ith a 3/4 inch socket
wr ench.
4. Reinstall the spark plug boot.
SERVICE AND ADJUSTMENTS
REPLACING THE LINE
For unit to operate properly, the cutting line
should be replaced w hen line becomes worn to
less than3 inchesin lengthfromtheedge of the
lineexittunnelsoneachsideofthecuttinghead.
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 .115” diameter Weed Eater
R
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 endsofline one atatime through the
line exit tunnels.
6. Pull the line and make s ure the line is ex-
tended fully through the tunnels.
Line exit
tunnels
7. Correctly inst alled 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 maybenecessary ifyou
notice any of the following conditions:
S
Engine will not idle w hen the t hr ottle is r e-
leased.
S
The trimmer head moves/spins at idle.
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 byhand while running and making ad-
justments. Keep all parts of your body away
from the cutting attachment and m uffler.
Idle Speed Adjustment
Allow engine to idle. Adjust speed until engine
runs without trimmer headmoving orspinning
(idle too fast) or stalling (idle speed too slow).
S
Turn idle speed screw clockwise to in-
crease engine speedif engine stalls ordies.
S
Turn idle speed screw counterclockwise to
decrease engine speed if trimmer head
moves or spins at idle.
WARNING:
Recheck the idle speed
after each adjustment. The trimmer head
must not move or spin at idle speed to avoid
serious injury to the operator or others.
Idle Speed S crew
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If yourequire further assistance orareunsure
about performing this procedure, contact an
authorized service dealer or call
1--800--554--6723.