Stihl MS 251 Manual

25MS 231, MS 231 C, MS 251, MS 251 C
: Fit the strap (1) on the pivot
pins (2) and (3) so that "TOP"
faces outwards and the
curve (arrow) faces up.
: Slip the spacer washer (1) onto
the pin (2).
: Hold the brake lever (2) so that
the brake spring attachment
point (arrow) is at the top.
TOP
2310RA021 TG
1
23
2310RA022 TG
2
1
2310RA036 TG
1
2
: Push the brake lever (2) into the
recess in the hand guard (1) and
line up the holes.
: Fit the brake cable (1) in the
hole (arrow).
: Push the hand guard (1) with
brake lever (2) over the machine
until they are positioned against
the pivot pins (arrows).
2310RA037 TG
1
2310RA038 TG
2
1
: Lift the bearing boss of the hand
guard (1) and the brake lever (2)
a little and position them over the
pivot pins (arrows).
: Push the flat spring (1) slightly to
one side until the cam of the hand
guard (arrow) slips passed it.
– Push the hand guard bearing
boss and the brake lever on to
the pivot pins.
: Push the brake cable
grommet (1) into its seat (arrow)
as far as stop.
TO
P
2310RA039 TG
1
2
TOP
2310RA040 TG
1
1
2310RA041 TG
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Stihl MS 251 Specifications

General

Idle speed	2800 RPM
Motor type	2-stroke motor
Chain pitch	1/308 \
Blade length	450 mm
Product color	Black, Grey, Orange
Motor speed (max)	10000 RPM
Oil tank capacity	0.2 L
Fuel tank capacity	0.39 L
Engine displacement	45.6 cm³
Kickback protection	Yes
Engine power	3 hp
Power source	Gasoline
Sound power level	114 dB
Vibration emission	3.9 m/s²
Sound pressure level	103 dB

Weight and Dimensions

Weight	4900 g