MacDon M155 Unloading And Assembly Instructions page 118

Attaching an A Series Header: Hydraulic Center-Link with Optional Self-Alignment
DANGER
To avoid bodily injury or death from unexpected startup of the machine, always stop the engine and
remove the key from the ignition before leaving the operator's seat for any reason.
1. Remove hairpin (A) from clevis pin (B) and remove
clevis pin from the header boots (C) on both sides of the
header.
CAUTION
To prevent damage to the lift system when lowering
header lift linkages without a header or weight box
attached to the windrower, ensure the float engagement
pin is installed in storage position (B) and NOT in
engaged position (A).
CAUTION
Check to be sure all bystanders have cleared the area.
2. Start the engine and activate the HEADER DOWN
button (A) on the ground speed lever (GSL) to fully
retract header lift cylinders.
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ASSEMBLING THE WINDROWER
Figure 3.171: Header Boot
Figure 3.172: Header Float Linkage
Figure 3.173: Ground Speed Lever
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Revision A