Craftsman WEEDWACKER 358.795100 Instruction Manual page 16

and any optional attachments must not
move/spin atidle speed.
Carburetor adjustment iscritical and if
done improperly can permanently
damage the engine aswell a sthe car-
buretor. Ifyou require further assis-
tance o rare unsure about performing
this procedure, call ourcustomer as-
sistance help line at1-800-235-5878.
Old fuel, adirty airfilter, adirty f uel f il-
ter, o rflooding may give theimpres-
sion ofanimproperly adjusted carbu-
retor. Check these c onditions before
adjusting the carburetor.
The carburetor has been c arefully set
atthe factory. Adjustments may be
necessary ifyou notice a ny ofthe fol-
lowing conditions:
• The trimmer head a nd/or any optional
attachment moves atidle. S ee IDLE
SPEED-T under adjusting procedure.
• Engine will n ot i dle. See IDLE
SPEED-T under adjusting procedure.
• Engine dies orhesitates instead of
accelerating. See ACCELERATION
CHECK under adjusting procedure.
• Loss o fcutting power. See MIXTURE
ADJUSTMENT (LorH)under adjust-
ingprocedure.
There a re three adjustment screws on
thecarburetor. The lowspeed a djust-
ment screw ismarked with the letter L,
and the high s peed a djustment screw is
marked with the letter 14. The third screw
is theidleadjustment screw andis
marked with theletter T.
Adjustment (HHHHHHHHH_._ stment
Idle S crew Adjustment (T)
(L)
ADJUSTING PROCEDURE
CAUTION: Do not force plastic limiter
cap on screws beyond the built-in
stops or damage will occur. Be sure
trimmer line is extended to the maxi-
mum length allowed by the line limiter
blade.
Initial Settings:
1. Turn both mixture screws (L and
H) counterclockwise until they
stop.
2. Turn the IDLE SPEED screw (T)
clockwise until it stops. Now turn
counterclockwise 4 1/2 turns.
3. Start engine, cut grass for 3 min-
utes, then proceed to adjust
screws according to the instruc-
tions below. If engine perfor-
mance at initial settings is accept-
able, no further adjustments are
necessary. If engine does not
start, refer to TROUBLESHOOTING
TABLE. If still unable to remedy
situation, call 1-800-235-5878.
Idle Speed-T
Allow engine to idle. If the trimmer
head moves, idle speed is too fast. If
the engine stalls, idle speed is too
slow.
• Turn IDLE SPEED screw (T) clock-
wise to increase engine speed.
• Turn IDLE SPEED screw (T) counter-
clockwise to decrease engine
speed.
Low Speed Adjustment -L
1. Allow the engine to idle.
2. Turn low speed mixture screw (L)
slowly clockwise until the speed
begins to drop.
3. Turn the low speed mixture screw
(L) counterclockwise until the
speed increases and then starts to
drop again.
4. Set the low speed mixture screw
(L) at the midpoint between the
two positions.
Readjust the idle speed (See IDLE
SPEED-T).
High Speed Mixture-H
CAUTION: Do not operate engine at
full throttle for prolonged periods while
making high speed adjustments as
damage to the engine can occur. Ad-
just the high speed screw 1/16 of a
turn at a time. A 1/16 turn is about the
width of the slot in the top of the
screw.
1. Allow the engine to idle.
2. Squeeze the throttle trigger fully.
Turn the high speed mixture screw
(H) counterclockwise until it stops.
3. Turn the high speed mixture screw
(H) 1/16 of a turn clockwise at a
time until the engine runs smooth-
ly.
After completing adjustments, check
for acceleration and trimmer head
movement at idle. Reset if necessary.
Acceleration Check
If engine dies or hesitates instead of
accelerating, turn the low speed mix-
ture screw (L) counterclockwise until
you have smooth acceleration.
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