Craftsman BRUSHWACKER 358.798461 Operator's Manual page 16

The carburetor has been carefully set
at the factory. Adjustments may be
necessary if you noticeany of the fol-
lowing conditions:
• Engine will not idle. See "Idle Speed"
under adjusting procedure.
• Engine dies or hesitates instead of
accelerating. See "Acceleration
Check" under adjusting procedure.
• Loss of cutting power. See "Mixture
Adjustment" under adjusting
procedure.
There are three adjustment screws on
the carburetor. The low speed adjust-
ment screw is marked with the letter L,
and the high speed adjustment screw
is marked with the letter H. The third
screw is the idle adjustment screw.
L Screw
H Screw
Idle Adjustment
CARBURETOR PRESETS
When making carburetor preset adjust-
ments, do not force plastic limiter caps
beyond stops or damage will occur.
If carburetor presets are not needed,
proceed to "Adjusting Procedure, Idle
Speed."
To adjust presets:
• Turn both mixture screws counter-
clockwise to the midpoint between
the limiter cap stops.
•Tum the idle speed screw clockwise
until it stops. Now turn counterclock-
wise 4-1/2 turns.
• Start motor, cut grass for 3 minutes,
and proceed to the adjustment sec-
tion. If engine does not start,
refer to troubleshooting chart or call
1-800-235-5878.
• If engine performance is acceptable
at the preset positions, no further ad-
justment is necessary.
ADJUSTING PROCEDURE
Idle Speed Adjustment
Allow engine to idle. Adjust speed until
engine runs without stalling.
• Allow engine to idle. Be sure the trim-
mer line is extended to the maximum
length allowed by the blade on the
shield.
• Adjust idle speed screw until engine
continues to run without stalling.
• Turn screw clockwise to increase
engine speed if the engine stalls or
dies.
• Turn screw counterclockwise to
slow engine down.
• Follow instructions in "Acceleration
Check".
• No further adjustments are neces-
sary if performance is satisfactory
and the trimmer head does not turn
at idle.
Low Speed Adjustment "L"
When making carburetor adjustments,
do not force plastic limiter caps beyond
stops or damage will occur.
• Allow the engine to idle.
• Turn screw "L" slowly clockwise until
the speed begins to drop. Note the
position of the screw. Do not attempt
to adjust beyond the stops as dam-
age can occur.
• Slowly turn the screw counterclock-
wise until the speed increases and
then begins to drop.
• Adjust the screw to the midpoint be-
tween the two positions.
• Check the acceleration by following
the steps outlined under ACCELERA-
TION CHECK. The trimmer head must
not turn at idle speed.
High Speed Adjustment "H"
CAUTION:
Do not operate engine at
full speed for prolonged periods while
making mixture adjustments as dam-
age to the engine can occur.
When making carburetor adjustments,
do not force plastic limiter caps beyond
stops or damage will occur.
• Support the lower end of the unit off
the ground so cutting attachment will
not make contact with any objects.
Be sure the trimmer line is extended
to maximum length allowed by the
blade on the shield.
• Start the engine and allow to idle.
• Squeeze the throttle trigger fully.
• Keep the unit running a full speed,
and turn the screw "H" very slowly
1R