Stihl MS 231 User Manual

37MS 231, MS 231 C, MS 251, MS 251 C
: Use a drift (2) to drive out the
screw (1).
Installing
: Use a drift (2) to drive home the
screw (1).
– Reassemble all other parts in the
reverse sequence.
1
2310RA089 TG
2
1
2310RA090 TG
2
6.5 Engine
The complete engine has to be
removed before removing the piston
or cylinder.
All sealing faces must be in perfect
condition. If the sealing faces are
damaged, replace the part
concerned, b 3.7.
– Remove the shroud, b 6.4
– Pull off the boot and unscrew the
spark plug, b 4
– Remove the fan housing,
b 8.2
– Remove the flywheel, b 7.6
– Remove the clutch, b 4
– Remove the oil pump, b 11.3
– Remove the filter base, b 12.3
– Remove the carburetor, b 12.5
– Remove the carburetor carrier,
b 12.8
– Remove the air guide shroud,
b 12.4
2310RA091 TG
– Remove the muffler, b 6.1
– Remove the handlebar, b 9.4
– Remove the tank housing,
b 12.11.5
: Remove the retaining ring (1).
: Remove the screws (1) from the
underside of the machine.
2310RA083 TG
1
1
2310RA092 TG
1
1
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