MacDon M155 Unloading And Assembly Instructions page 188

6. Start the engine and activate HEADER DOWN button (A) on
the ground speed lever (GSL) to fully retract the header lift
cylinders.
7. Remove pin (A) from the frame linkage and raise
center-link (B) until the hook is above the attachment pin
on the header. Reinstall pin (A) to hold the center-link
in place.
IMPORTANT:
If the center-link is too low, it may contact the header as
the windrower approaches the header for hookup.
262320
ATTACHING HEADERS
Figure 6.120: Ground Speed Lever
Figure 6.121: Hydraulic Center-Link without Self-
Alignment Kit
172
A
B
A
Revision A