FRITSCH PULVERISETTE 1, Model I classic line - Manual (Page 28)

Page 26
2. Mount the funnel (A) in the position shown above with the 4 cylinder head
screws M6x12 (E) and the 4 washers (F).
3. Select the angled screw coupling (B or D) with the correct thread (PG11 or
M20). To do this, check the housing of the main switch (4) to see which thread
matches.
4. Then press the collar piece out of the angled screw coupling (B or D) as
shown above.
5. Unscrew and open the housing of the main switch (4) with the Phillips
screwdriver (N). The blue cable link (X) can be seen running from the upper
left to the lower right.
X
PG11 or
M20 ?
Æ
Check!!