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4.2 Positioning the toothed belt pulleys
The two toothed belt pulleys must be positioned relative to each other
such that the toothed belt can run correctly.
Sequence
• Always check the position of the other toothed belt pulley after making a
4.2.1 Upper toothed belt pulley
Proper setting
The 2 setscrews for the upper toothed belt pulley are seated flush on the
flat.
Cover
• Arm cover (
Fig. 15: Setting the upper toothed belt pulley
Setting steps
1. Using the screwdriver, push the toothed belt (4) sufficiently far to the
2. Loosen the setscrews (1).
3. Turn the upper toothed belt pulley (3) such that the setscrews (1) are
4. Tighten the setscrews (1).
5. Use the screwdriver to push the toothed belt (4) back again.
18
change on either of the toothed belt pulleys.
3.3.2 Removing and installing the motor cover, p. 11)
①
②
(1) - Setscrews
(2) - Flat on the arm shaft
side that the 2 setscrews (1) can be reached.
seated flush on the flat (2) of the arm shaft.
WARNING
Risk of injury!
Crushing injuries from moving parts.
Switch the machine off before you check and set
the upper toothed belt pulley.
(3) - Upper toothed belt pulley
(4) - Toothed belt
Service Instructions 911-211 - 00.0 - 02/2015
Machine head
④
③
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