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Asyourunitisused,carbondeposits
builduponthemufflerandsparkar-
restingscreen.
Fornormalhomeowneruse,however,
themufflerandsparkarrestingscreen
willnotrequireanyservice.After50
hoursofuse,werecommendthatyour
mufflerbeservicedorreplacedbyyour
SearsServiceCenter.
REPLACESPARKPLUG
Replacethesparkplugeachyearto
ensuretheengine starts easier and
runs better. Set spark plug gap at
0.025 inch (0.6 ram). Ignition timing is
fixed and nonadjustable.
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder
and discard.
3. Replace with Champion RCJ-6Y
spark plug and tighten securely
with a 3/4 inch socket wrench.
4. Reinstall the spark plug boot.
LINE REPLACEMENT
1. Move the ON/OFF swith to the OFF
position.
2. Disconnect the spark plug wire.
3. Remove spool by firmly pulling on
tap button.
4. Clean entire surface of hub and
spool.
5. Replace with a pre-wound spool
(#71-85819), or cut two lengths of
12-1/2 feet (3.8 meters) of 0.080" (2
ram) diameter Craftsman® brand
line.
_IWARNING: Never use wire,
rope, string, etc., which can break off
and become a dangerous missile.
6. Insert ends of line about 1/2 inch
(1 cm) into the small holes on the
inside of the spool.
Spool _ _/,; ,_
// I
Zi Zj, _/Sma"
ff //_ Holes
s-.f/D;g
H?I
7, Wind line evenly and tightly onto
spool. Wind in the direction of the
arrow on the spool.
8. Push the line into the notches, leav-
ing 3 to 5 inches (7 - 12 cm) un-
wound.
9. Insert the line into the exit holes in
the hub as shown in the illustration.
Line exit holes Line in Notch
\ "-
_. Line in Notch
10. Align the notches with the line exit
holes.
11. Push spool into hub until itsnaps
into place.
12. Pull the lines extending outside of
the hub to release them from the
notches.
CARBURETOR ADJUSTMENT
_,WARNING: Keep others away
when making idle speed adjustments.
The trimmer head will be spinning dur-
ing most of this procedure. Wear your
protective equipment and observe all
safety precautions. After making ad-
justments, the trimmer head must not
move or spin at idle speed.
The carburetor has been carefully set
at the factory. Adjustments may be
necessary if you notice any of the fol-
lowing conditions:
• Engine will not idle when the throttle is
released.
• The trimmer head moves or spins at
idle.
Make adjustments with the unit sup-
ported 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 adjustments.
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 trimmer head
moving or spinning (idle too fast) or
engine stalling (idle speed too slow).
• Turn idle speed screw clockwise to
increase engine speed if engine
stalls or dies.
• Turn idle speed screw counterclock-
wise to decrease engine speed if
trimmer head moves or spins at idle.
15
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