Stihl MS 231 User Manual

87MS 231, MS 231 C, MS 251, MS 251 C
– Coat the grommet with STIHL
press fluid to simplify installation,
b 14
: Place the air guide shroud (1) in
position and pull the grommet of
fuel hose (2) into the bore (arrow)
until it is properly seated.
: Line up grommet (1) of fuel
hose (2) so that its straight
side (arrow) butts against the
edge of the air guide shroud.
2310RA343 TG
12
2310RA344 TG
1
2
: Use the ends of the string (2) to
pull the manifold flange (1)
through the intake opening while
pushing the air guide shroud (3)
against the manifold flange.
– Remove the string.
: Ease the air guide shroud (1)
over the stop (arrow) and push it
into its seat.
: Insert and tighten down the
screws (2) firmly.
: Push the fuel return hose (1) onto
the connector (2) as far as stop.
2310RA345 TG
1
3
2
2310RA346 TG
2
1
2
2310RA347 TG
2
1
: Position the elbow connector (1)
against the stop (arrow).
: Insert and tighten down the
screw (2) firmly.
: Starting at the elbow
connector (2), push the fuel
return hose (1) into the
guides (arrows).
– Position the fuel return hose
snugly – without a loop between
the air guide shroud and
grommet.
Do not kink or pinch the fuel return
hose.
– Install the carburetor carrier,
b 12.8
– Install the throttle rod, b 10.3.4
– Install the carburetor, b 12.5
2310RA348 TG
2
1
2310RA349 TG
2
1
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Stihl MS 231 Specifications

General

Power-to-Weight Ratio	2.4 kg/kW
Oilomatic Chain Pitch	3/8" P
Sound Pressure Level	103 dB(A)
Sound Power Level	114 dB(A)
Engine Power	2.0 kW
Weight	4.8 kg
Bar Length	35 cm / 40 cm
Fuel Capacity	390 cc
Chain Oil Capacity	200 ml
Vibration Level Left/Right	3.0/3.0 m/s²