Stihl MS 251 Manual

62 MS 231, MS 231 C, MS 251, MS 251 C
: Push the end of the starter
rope (1) out a little and undo the
knot.
– Pull the starter rope out of the
rope rotor and fan housing.
: Tie one of the special knots
shown in the end of the rope.
: Thread the rope through the top
of the starter grip.
2310RA215 TG
1
165RA227 TG
4903RA131 TG
Pull the rope into the starter grip
until the knot is properly seated in
the grip (small arrow).
: Thread the starter rope (1)
through the guide
bushing (arrow).
: Thread the starter rope (1)
through the side of the rope rotor.
– Secure the rope (1) with a simple
overhand knot.
4903RA132 TG2310RA216 TG
1
2310RA217 TG
1
: Pull the rope (1) back into the
rotor until the knot locates in the
recess (arrow).
– Tension the rewind spring, b 8.7
– Reassemble all other parts in the
reverse sequence.
8.7 Tensioning the Rewind
Spring
– Remove the fan housing and the
segment, b 8.2
: Pull out a short length of starter
rope (1).
: Use the starter rope (1) to rotate
the rope rotor (2) six turns
clockwise.
The rewind spring is now tensioned.
Hold the rope rotor steady since it
will otherwise spin back and may
damage the rewind spring.
2310RA218 TG
1
2310RA219 TG
1
2
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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