Dismantling
► Remove battery from tool. Remove four cylin-
der screws Torx (4), strap guide rear (5) and
side cover (3).
► Carefully pull out tension wheel (1).
► Remove ball bearing (2) from tension wheel.
WARNING
Wear eye protection when cleaning
with compressed air!
► Clean tension wheel (1) with compressed air.
► In the case of heavy soiling of the toothing:
Carefully clean tension wheel with enclosed
wire brush (6).
► Check tension wheel for worn teeth. If teeth
are worn, replace tension wheel.
Attention
The tension wheel must not be cleaned while it is rotating. Risk of tooth breakage!
Fitting
► Fitting is performed in reverse order. Observe the direction of rotation of the tension wheel, see
arrow.
► Lightly lubricate the inner teeth of the tension wheel with Klüber grease GBU Y 131 (Microlube).
6.5 Cleaning/replacing the tooth plate
Required parts Order number
STB 71 / STB 73: Tooth plate (2) (wear part) 1821.048.026
STB 75: Tooth plate (2) (wear part) 1821.048.030
Torx counter-sunk screw Torx (1) 1832.039.285
Wire brush (3) 1821.901.004
Dismantling
► Remove battery from tool.
► Remove counter-sunk screw Torx (1).
► Lift rocker lever towards the handle, remove
tooth plate (2).
WARNING
Wear eye protection when cleaning
with compressed air!
► Clean tooth plate (2) with compressed air.
► In the case of heavy soiling of the teeth:
Carefully clean tooth plate with enclosed wire
brush (3).
► Check tooth plate for worn teeth. If several teeth are worn, replace tooth plate.
Fitting
► Fitting is performed in reverse order. Secure counter-sunk screw (1) with Loctite 222.
– The tooth plate (2 ) must sit freely movable in the rocker.
2
1
3
!
STB 75
1 2 3 4 5
6
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