MacDon FD70 for Combine Operators - Manual (Page 72)

SECTION 8.1 D50, D60 HEADER AND ADAPTER
Form 169006
70
Revision D
u. Raise and lower header and reel a few times to
allow trapped air to pass back to the reservoir.
NOTE
It is not necessary to bleed the system
by loosening fittings.
v. Check float and if the header is level. If
adjustments are required, refer to Section 9.11.3
Header Float, and Section 9.14 HEADER
LEVELLING.