MacDon M1 Series Unloading And Assembly Instructions page 209

DANGER
Ensure that all bystanders have cleared the area.
IMPORTANT:
When attaching an R216 SP Rotary Disc Header to an M1 Series
Windrower that has been previously configured for a D1X Series
Draper Header, ensure the two shield mount plates (A)
(MD #307045) are attached to the windrower and forming shield.
1. Shut down the engine, and remove the key from the ignition.
2. Windrowers equipped with a hydraulic center-link without
self-alignment: Remove pin (A) and raise center-link (B)
until the hook is above the attachment pin on the header.
Replace pin (A) to hold the center-link in place.
IMPORTANT:
Ensure that the center-link is positioned high enough that it
does not contact the header as the windrower approaches
the header.
3. Remove hairpin (A) from clevis pin (B), and remove the pin
from header support (C) on both sides of the header.
4. Start the engine.
215620
ATTACHING A HEADER TO THE WINDROWER
197
Figure 5.173: Shield Mount Plates on Forming Shield
Figure 5.174: Hydraulic Center-Link
Figure 5.175: Header Support
Revision A