Stihl MS 461 - Adjusting the Carburetor; Basic Setting

84 MS 461, MS 461-R
Version without limiter caps
– Take out the high speed
screw (H) with spring.
: Inspect the tip (arrow) for
damage or wear and replace the
high speed screw (H) if
necessary.
: Check the O-ring (1) and
spring (2) and replace if
necessary.
: Screw down the high speed
screw (H) with spring (2) as far
as stop.
– Go to "Basic Setting", b 12.6.1
Version with limiter caps
: Inspect the tip (arrow) for
damage or wear and replace the
high speed screw (H) if
necessary.
: Inspect the O-ring (1) and
replace if necessary.
: Screw down the high speed
screw (H) as far as stop.
3443RA458 TG
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3443RA324 TG
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– Continue with "Pre-installing
limiter cap".
Pre-installing limiter caps
: Push the new limiter caps (1)
onto the high speed screws as far
as the first detent (arrow) – do not
push them fully home.
If the screwdriver
5910 890 2304 is not available, the
basic setting must be carried out
without pre-installed limiter caps.
– Carry out the basic setting,
b 12.6.1
12.6 Adjusting the Carburetor
12.6.1 Basic Setting
The basic setting is necessary only
if the high speed screw (H) or low
speed screw (L) has to be replaced
or after cleaning and adjusting the
carburetor from scratch.
It is necessary to carry out the basic
setting after removing the limiter
caps.
1
3443RA325 TG
– Install the carburetor and air filter
– adjusting screws must be
preset and the new limiter caps
pre-installed.
– Check chain tension and adjust if
necessary.
– Inspect the spark arresting
screen (if fitted) and clean or
replace if necessary, b 3.7 or
b 6.1
– Check the air filter and clean or
replace if necessary, b 12.1
Version with limiter caps
For the sake of clarity the adjusting
screws are shown on the exposed
carburetor.
: Insert the screwdriver (1)
5910 890 2304 through the pre-
installed limiter caps of high
speed screw (H) and low speed
screw (L).
: Starting with the high speed
screw H against its seat,
open it 11/2turns
counterclockwise.
: Starting with the low speed
screw (L) against its seat,
open it 1 full turn.
– Go to "Setting", b 12.6.2
3443RA491 TG
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