MacDon FD75 OM - Manual (Page 231)

HEADER ATTACHMENT/DETACHMENT
3. Disconnect driveshaft (A) from combine.
Figure 5.67: Driveline
4. Slide driveshaft in hook (A) so that disc (B) drops to
secure driveshaft.
Figure 5.68: Driveline
5. Push in lock button (B), and pull handle (C) to release
coupler (A).
Figure 5.69: Adapter Connections
169894 217 Revision A