MacDon M1 Series Unloading And Assembly Instructions page 146

WARNING
Check to be sure all bystanders have cleared the area.
15. Press HEADER UP switch (A) to raise the header to its
maximum height.
16. If one end of the header does NOT fully rise, rephase the
lift cylinders as follows:
a. Press and hold HEADER UP switch (A) until both
cylinders stop moving.
b. Continue to hold the switch for 3–4 seconds. The lift
cylinders are now phased.
NOTE:
This procedure may have to be repeated if there is air in the
hydraulic system.
17. Shut down the engine, and remove the key from
the ignition.
18. Engage the safety props on both lift cylinders as follows:
a. Pull lever (A) toward you to release it, and then rotate
it toward the header to lower the safety prop onto the
cylinder.
b. Repeat the previous step for the opposite lift cylinder.
IMPORTANT:
Ensure that the safety props engage over the cylinder piston
rods. If the safety prop does NOT engage properly, raise the
header until the safety prop fits over the rod.
19. Install clevis pin (A) through the support and the foot, and
secure it with a hairpin. Repeat this step for the opposite
support.
IMPORTANT:
Ensure that clevis pin (A) is fully inserted into the support
and foot holes, and that the hairpin is installed behind the
bracket.
215620
ATTACHING A HEADER TO THE WINDROWER
134
Figure 5.9: GSL
Figure 5.10: Safety Prop Lever
Figure 5.11: Header Support
Revision A