Stihl HTA 50.0 Instruction Manual page 36

English
7.1.2 Removing the shaft.
► Switch off the pole pruner and remove the bat‐
tery.
► Rotate the wing screw counterclockwise.
► Remove shaft from the coupling sleeve.
7.2 Mounting and Removing the
Bar and Chain
7.2.1 Mounting the Guide Bar and Saw
Chain
The guide bar and saw chain combinations that
can be used with the chain sprocket are listed in
the specifications,
► Switch off the pole pruner and remove the bat‐
tery.
2
► Rotate the nut (1) counterclockwise until the
chain sprocket cover (2) can be removed.
► Remove the chain sprocket cover (2).
► Turn the tensioning screw (3) counterclock‐
wise until the tensioner slide (4) butts against
the left end of the housing.
► Fit the saw chain in the guide bar groove so
that the arrows on the tie straps on the top of
the bar point in the direction of rotation.
7
36
20.1.
3
4
1
5
6
8
7 Assembling the Pole Pruner
► Fit the guide bar and saw chain on the pole
pruner and check the following points:
– The drive links of the saw chain are seated
in teeth of the chain sprocket (7).
– The collar stud (5) is located in the slot in
the tail of the guide bar (6).
– The peg of tensioner slide (4) engages the
hole (8) in guide bar (6).
The guide bar (6) may be fitted either way round.
The logo on the guide bar (6) may also be upside
down.
3
► Turn the tensioning screw (3) clockwise until
the saw chain fits snugly against the guide
bar. Make sure the drive links of the saw chain
engage the guide bar groove.
The guide bar (6) and saw chain fit snugly
against the pole pruner.
► Fit the chain sprocket cover (2) so that it is
flush with the pole pruner.
► Fit the nut (1) and screw it tight.
7.2.2 Removing the Guide Bar and Saw
Chain
► Switch off the pole pruner and remove the bat‐
tery.
► Rotate the nut counterclockwise until the chain
sprocket cover can be removed.
► Remove the chain sprocket cover.
► Turn the tensioning screw counterclockwise as
far as it will go.
The saw chain is now slack.
► Remove the guide bar and saw chain.
7.3 Tensioning the Saw Chain
The saw chain expands or contracts during cut‐
ting work. The saw chain tension changes as a
result. Check the saw chain tension regularly
during operation and readjust if necessary.
► Switch off the pole pruner and remove the bat‐
tery.
6
0458-813-9621-B