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Figure 17
Figure 18
Figure 19
19 July 2023/v1.7
9. After the device has been perfectly centered, set the
tumbler switch to position "1".
Check: After the magnet has been engaged, the crank
handle must turn freely and the centering roller should
make light contact with the entire circumference of the
counterbore wall. Figure 17
10.
The cutting bit of the turning tool can now be moved
into position on top of the counterbore seat by
pushing down on the bow. Figure 18
11.
Loosen the locking screw then slowly turn the crank
handle while simultaneously turning the advancing
mechanism (both clockwise) until the turning tool
contacts the seat. If the depth has been previously
measured at a certain point, then you must also
make contact at the same point by slightly turning
the handle. Now tighten the locking screw slightly.
Figure 19
BB-86 | Serial-No. 865 / 0609 ©
24
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