Craftsman 358.350260 Operator's Manual page 15

Old fuel, adirty airfilter, dirty f uel f ilter,
orflooding may g ive the impression of
animproperly adjusted carburetor.
Check these c onditions before adjust-
ing the carburetor.
The carburetor has been c arefully set
atthe factory. Adjustments may be
necessary ifyou notice any ofthe fol-
lowing conditions:
• Chain m oves atidle. S ee "Idle
Speed" under adjusting procedure.
• Saw will n ot i dle. See "Idle Speed"
and "Low Speed Mixture"under ad-
justing procedure.
• Engine dies orhesitates when i t
should accelerate. See "Acceleration
Check" under adjusting procedure.
• Loss o fcutting power. See "High
Speed M ixture H"under adjusting
procedure.
There a re three adjustment screws on
the carburetor. They a relabeled H,L,
and T.They a relocated inthe area just
above t he primer bulb.
CARBURETOR PRESETS
When m aking adjustments, donot
force t he plastic limiter caps b eyond
the stops o rdamage will o ccur.
Ifcarburetor presets are not n eeded,
proceed to"Idle Speed-T."
• Turn b oth mixture screws counter-
clockwise until they stop.
• Turn t he idle speed s crew clockwise
until itstops. Now turn counterclock-
wise 4-1/2 full t urns.
Start motor, letitrun for3 minutes, and
proceed tothe adjustment section. If
engine does n ot s tart, refer totrouble-
shooting chart orcall 1 -800-235-5878.
Ifengine performance isacceptable at
the preset positions and there i sno
chain m ovement atidle, n ofurther ad-
justment isnecessary.
ADJUSTING PROCEDURE
Idle Speed-T
Allow engine to idle. Adjust speed until
engine runs without chain movement
or stalling.
• Turn clockwise to increase engine
speed if engine stalls or dies.
• Turn counterclockwise to decrease
speed.
No further adjustments are necessary
if chain does not move at idle speed
and if performance is satisfactory.
Low Speed Mixture-L
Allow engine to idle. Then accelerate
the engine and note performance. If
engine hesitates, bogs down, or
smokes during acceleration, turn mix-
ture screw clockwise in 1/16-turn incre-
ments until performance is satisfactory.
Repeat this procedure as necessary
for proper adjustment. After completing
adjustments, check for acceleration
and chain movement at idle. Reset if
necessary.
High Speed Mixture-H
DO NOT operate engine at full throttle
for prolonged periods while making ad-
justments. Damage to the engine can
occur. Make a test cut. Based on per-
formance of the saw while cutting, ad-
just the high speed mixture setting in
1/16-turn increments as follows:
• Clockwise until saw has good power
in the cut with no hesitation. Do not
adjust by sound or speed, but judge
by how well the saw performs in the
cut.
• Counterclockwise if the saw has
speed, but dies in the cut or lacks
power in the cut.
After completing adjustments, check
for acceleration and chain movement
at idle. Reset if necessary.
Acceleration Check
If the engine dies or hesitates instead of
accelerating, turn the low speed mixture
adjustment counterclockwise until you
have smooth acceleration with no chain
movement at idle. Recheck and adjust
as necessary for acceptable perfor-
mance.
Prepare your unit for storage at the
end of the season or if it will not be
used for 30 days or more.
WARNING:
• Allow the engine to cool, and secure
the unit before storing or transport-
ing.
• Store chain saw and fuel in a well
ventilated area where fuel vapors
cannot reach sparks or open flames
from water heaters, electric motors or
switches, furnaces, etc.
• Store chain saw with all guards in
place and position chain saw so that
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