Stihl BT 121 Instruction Manual page 20

English
6
N Pry the cap (5) out of the grip.
N Remove the remaining rope from
the rotor and starter grip.
N Tie a simple overhand knot in the
new rope and then thread it through
the top of the grip and the rope
bushing (6).
N Refit the cap in the grip.
18
5
N Pull the rope through the rotor and
secure it with a simple overhand
knot.
N Coat rope rotor bearing bore with
non-resinous oil – see "Special
Accessories".
N Slip the rotor over the starter post –
turn it back and forth to engage the
anchor loop of the rewind spring.
N Fit the pawl (4).
N Fit the washer (3).
N Push the spring clip (2) into position
– it must point counterclockwise as
shown and engage the pawl's peg.
Tensioning the Rewind Spring
N
N
N
N
N
2
3
4
The starter grip must sit firmly in the rope
bushing. If the grip droops to one side:
Add one more turn on the rope rotor to
increase spring tension.
N
N
Make a loop in the unwound starter
rope and use it to turn the rope rotor
six full revolutions
counterclockwise.
Hold the rotor steady.
Pull out and straighten the twisted
rope.
Let go of the rotor.
Release the rope slowly so that it
winds onto the rotor.
When the starter rope is fully
extended it must still be possible
to rotate the rotor another one and
a half turns. If this is not the case,
the spring is overtensioned and
could break.
Take one turn of the rope off the
rotor.
Fit the fan housing.
BT 121