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Stihl MS 391 Safety Manual

Stihl MS 391
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MS 311, MS 391
English
32
N Refit the pawls (4) in the rotor and
slip the washer (3) over the starter
post
N Press the spring clip (2) on to the
starter post and over the pegs of the
pawl with a screwdriver or suitable
pliers – the spring clip must point in
the clockwise direction – as in the
picture
Tension the rewind spring
N Make a loop in the unwound starter
rope and use it to turn the rope rotor
six full revolutions in the direction of
the arrow
N Hold the rope rotor tight – pull out
the twisted rope and untangle it
N Release the rope rotor
N Slowly let go of rope so that it winds
onto the rotor
The starter grip must be drawn firmly
into the rope guide bush. If it tips
sideways: increase the spring tension by
another turn.
It must be possible to turn the rope rotor
on another half-turn when the rope has
been drawn out completely. If not, the
spring has been tensioned too tightly
and may break!
N Remove one turn of the rope from
the rotor
N Install the fan housing
N Refit the shroud and tighten the
screws
Replacing broken rewind spring
N Remove the rope rotor as described
for "Replace torn starter rope"
N Carefully pry out the broken pieces
of spring with a screwdriver
N Apply a few drops of non-resinous
oil to the new replacement spring
N Position the replacement spring
with frame in the fan housing – the
anchor loop (arrow) must be located
over the retaining lug in the fan
housing
N Apply suitable tools (screwdriver,
punch, etc.) to the recesses and
push the spring into its seat in the
fan housing – the spring slides out
of the frame
N Refit the rope rotor, tension the
rewind spring
N Install the fan housing
N Refit the shroud and tighten the
screws
4
4
3
2
001BA096 KN
213BA021 KN
The broken pieces of spring may
still be under tension and can
spring apart unexpectedly on
removal from the fan housing –
risk of injury! Wear face shield and
protective gloves
213BA022 KN

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Stihl MS 391 Specifications

General IconGeneral
Motor type2-stroke motor
Chain gauge1.6 mm
Chain pitch3/8 \
Automatic oilingYes
Oil tank capacity0.35 L
Fuel tank capacity0.6 L
Engine displacement64.1 cm³
Engine power4.4 hp
Power sourceGasoline
Weight and Dimensions IconWeight and Dimensions
Weight6200 g

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