Adjusting The Carburetor; 14.5.1 Basic Setting - Stihl MS 200 Service Manual

– Screw down the high speed
screw (H) as far as stop.
– Continue with installing limiter
cap.
Installing limiter cap
1
2
The basic setting is carried out
without the limiter cap.
– Carry out basic setting, b 14.5.1
– Line up the new limiter cap (1) so
that the recess (arrow) engages
the pin (2).
: Push the new limiter cap (1) over
the high speed screw (H) until it
snaps into position.
– Reassemble in the reverse
sequence.
14.5

Adjusting the Carburetor

14.5.1 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.
MS 200, MS 200 T
It is necessary to carry out the basic
setting after removing the limiter
cap.
The carburetor and air filter are
installed, the adjusting screws fitted.
Starting with the low speed and high
speed screws against their seats,
turn them counterclockwise.
: Turn the high speed screw H (1)
one full turn Turn the low speed
screw L (2)
one full turn
This completes the basic setting of
the high speed screw (H) and the
low speed screw (L).
– Install the carburetor, MS 200
b 14.2, MS 200 T b 14.2.1
– Check chain tension and adjust if
necessary, b 5
– Check spark arresting screen (if
fitted) and clean or replace if
necessary, b 8.1
– Check the air filter and clean or
replace if necessary, b 14.1
– Allow engine to warm up.
Setting disk 5910 893 6600 may be
fitted on the screwdriver
5910 890 2305 to simplify
adjustments.
2 : Insert screwdriver (1)
5910 890 2305 through the
1
grommet (arrow) and into the
adjusting screws.
Adjust idle speed with a tachometer.
Adjust specified engine speeds
within tolerance of ± 200 rpm.
1. Adjust engine speed
idle speed screw (LA)
to 3,600 rpm.
2. Turn the
low speed screw (L) clockwise
or counterclockwise to obtain the
maximum engine speed.
If this speed is higher than
4,000 rpm, abort the procedure and
start again with step 1.
3. Use the idle speed screw (LA)
to set the engine speed again to
3,600 rpm.
4. Set the engine speed to
2,800 rpm with the low speed
screw (L)
5. Set engine's maximum speed
to 14,000 rpm with the high
speed screw (H)
Remove the carburetor, MS 200
b 14.2, MS 200 T b 14.2.1
Install the limiter cap, b 14.4.7
The basic setting of the high speed
screw (H) is now fixed.
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