Sears Craftsman WEEDWACKER 517.798580 Operator's Manual página 12

Problem
Engine does not
reach full speed
and emits exces-
sive smoke:
Engine starts, runs,
and accelerates but
will not idle:
String will not
advance:
4.
5.
Grass wraps 1.
around drive shaft
housing and 2.
stringhead:
Cause Correction
Spool retainer hard
to turn:
Oil drips from
muffler:
1. Check oil fuel
mixture.
2. Air filter dirty.
,4
3. Carburetor requires
adjustmenL
Carburetor requires
adjustment.
1. String welded to
itself.
2, Not enough string
on spool.
3. String worn too
short.
String tangled on
spool.
Engine speed too
slow.
Cutting tail grass at
ground level.
Operating trimmer
at pad throttle.
Screw threads dirty or
damaged.
1. Operating trimmer
at part throttle
2. Check oil/fuel
mixture.
3. Air filter dirty.
4. Carburetor requires
adjustment.
1. Use fresh fuel and the correct 2-
cycle oil mix.
2. Clean per instructions in
Maintenance Section.
3. Turn "H" (B) needle clockwise
1/16 turn.
Turn idle speed screw (C) c!ockwise to
increase idle speed,
1. Lubricate with silicone spray.
2. Install more string (see String
Replacement),
3. Pull strings while alternately
pressing down on and releasing
spool retainer.
4. Remove string from spool and
rewind (see String Replacement).
5. Advance string at full throttle.
1. Cut tall grass from the top down.
2. Operate trimmer at ful! throttle.
Clean threads and lubricate with
grease- if no improvement, replace
spool retainer,
1. Operate trimmer at full throttle.
2. Use fresh fuel and the correct 2-
cycle oil mix.
3. Clean per instructions in
Maintenance Section
4. Turn "H" (B) needle clockwise
1/16 turn.
A
C
B
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