Carburetor Adjustment; Basic Setting; Adjustment - Stihl GS 461 Manual

Fitting the limiter caps
1
: Press new limiter caps (1) onto
the hole in the adjusting screw
until they engage the first position
(arrow) – do not push them down
fully
If screwdriver
5910 890 2304 is not available, the
basic setting must be made without
fitting the limiter caps.
– Make the "basic setting",
b 10.5.1
10.5

Carburetor adjustment

10.5.1 Basic setting

Only necessary if the high speed
adjusting screw H or low speed
adjusting screw L has to be
replaced or for cleaning and setting
the carburetor.
The basic setting must always be
made after removing the limiter
caps.
– Install carburetor and air filter
– The adjusting screws must be
pre-set and the new limiter caps
must be fitted
– Check chain tension, adjust if
necessary
74
– Examine the spark arresting
screen (present only in some
countries); clean or replace it if
necessary, b 3.7 or b 5.1
– Check the air filter and clean or
replace if necessary, b 10.1
1
Adjusting screws on disassembled
carburetor shown for a better view.
: Push screwdriver (1)
5910 890 2304 through the pre-
fitted limiter caps of the high
speed adjusting screw H and low
speed adjusting screw L
: Unscrew high speed adjusting
screwH counterclockwise
by 1 1/2 revolution out of its
seat
: Unscrew the low speed screw L
counterclockwise
by 1 revolution out of its seat
– Continue with "Adjustment",
b 10.5.2

10.5.2 Adjustment

– Push screwdriver
5910 890 2304 through the
bushing and pre-fitted limiter
caps of the high speed adjusting
screw H and low speed adjusting
screw L
Set speed with speed tester or
engine analyzer STIHL MDG 1
(select from software "Other STIHL
products" / "Tachometer"). Set the
specified speeds within the
tolerance range of ± 200 rpm.
To allow the engine to warm up,
there are the following options:
1. with cut-off chain and
guide bar if
water supply possible
2. without cut-off chain and
guide bar if
water supply not possible
– Start engine and allow to warm
up for 1 minute with load change.
GS 461