Stihl MS 171 Manual page 58

1
: Thread the starter rope (1)
through the side of the rope rotor
(arrow).
– Secure the rope with a simple
overhand knot.
: Pull rope back until knot locates
in recess (arrow) in rope rotor.
– Install the rope rotor and tension
the rewind spring, b 10.5,
b 10.7
– Install the fan housing and, if
necessary, the segment, b 10.1
and b 10.2
MS 171, MS 181, MS 211
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10.7 Tensioning the Rewind
Spring
1
– Remove the fan housing and, if
necessary, the segment, b 10.1
and b 10.2
: Pull out a short length of starter
rope (1).
: Use the starter rope (1) to rotate
the rope rotor (2) six turns
clockwise.
Pawl(s) and spring clip must be
installed.
Rotating the rope and rope rotor
causes the rope to become twisted.
The rewind spring is now tensioned.
Hold the rope rotor steady since it
will otherwise spin back and may
damage the rewind spring.
1
– Hold the rope rotor (2) steady.
: Pull out the twisted rope (1) with
the starter grip and straighten it
out.
2
1
– Hold the starter grip (1) firmly to
keep the rope tensioned.
: Let go of the rope rotor and
slowly release the starter rope so
that it can rewind properly.
The rewind spring is correctly
tensioned when the starter grip sits
firmly in the rope guide bushing
(arrow) without drooping to one
side. If this is not the case, tension
the spring by one additional turn.
When the starter rope is fully
2
extended, it must still be possible to
rotate the rope rotor at least another
half turn before maximum spring
tension is reached. If this is not the
case, reduce spring tension since
there is otherwise a risk of
breakage.
To reduce spring tension:
Pull the rope out, hold the rope rotor
steady and take off one turn of the
rope.
– Install the fan housing and, if
necessary, the segment, b 10.1
and b 10.2
57