MacDon FD75 OM - Manual (Page 253)

HEADER ATTACHMENT/DETACHMENT
24. Install fillers (A) at each front corner of feed deck with
two 3/8 in. x 0.75 long hex head bolts (B) at each
location.
Figure 5.125: Fillers
25. Connect knife and draper drive hydraulic hoses (B) at
bracket.
26. Attach electrical connector (B).
Figure 5.126: Header Connections
169894 239 Revision A