Stihl TS 350 - Adjusting Carburetor; Carburetor Settings; Idle Speed Adjustment; Lean Setting Warning

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It is usually necessary to change the
setting of the idle speed adjusting screw
/$ after every correction to the low
speed adjusting screw /.
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Set to standard setting!
•
Turn the idle speed adjusting
screw /$ clockwise until
the cutting wheel starts to run,
then back off the screw one quarter
of a turn
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Set to standard setting!
•
Turn the idle speed adjusting
screw /$ counterclockwise until
the cutting wheel stops running,
then turn screw another quarter
turn in the same direction
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Idle setting is too lean (e.g. at cold
ambient temp.)
•
Turn the low speed adjusting
screw / counterclockwise -
no further than stop -
until engine runs and accelerates
smoothly
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Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components
(e.g. carburation, ignition, timing and
valve or port timing) without the addition
of any major hardware.
The carburetor is set at the factory to
guarantee an optimum fuel-air mixture
under all operating conditions.
It ensures that your machine will run
smoothly, be fuel efficient, operate
reliably and produce low emissions.
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•
Check the air filter and clean or
replace it if necessary
•
Check the spark arresting screen
and clean or replace it if necessary
Turn the high speed adjusting
screw + counterclockwise as far
as stop, i.e. 1/4 turn from max.
lean setting
Turn the low speed adjusting
screw / clockwise as far as stop -
then back off the screw one quar-
ter of a turn
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If the engine runs unsatisfactorily, slight
readjustment may be necessary:
•
Check standard setting
•
warm up the engine
•
Turn the high speed adjusting
screw + clockwise (leaner)
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If you make the setting too lean, the
engine might be damaged as a result of
insufficient lubrication and overheating.
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