Replacing The Cutting Inserts - Promotech BM-21S Operator's Manual

3.5. Replacing the cutting inserts

Unplug the power cord from the power outlet, unscrew the lever (1, Fig. 12), and
remove the indicator (2) and the milling head cover (3).
Use the supplied T15P screwdriver to unscrew the mounting screw (Fig. 13), then
remove the insert, and clean the socket. Next, rotate the insert by 90° and mount
again or replace to a new one if all four edges are worn. To replace an insert from the
internal ring, first remove the insert from the external ring.
Mounting screw
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Fig. 12. Removing the milling head cover
Fig. 13. Replacing the cutting inserts
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BM-21S
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