Operating The Header; Header Float - MacDon R85 Operator's Manual

6 Operating the Header

Satisfactory operation of the header in all situations requires making proper adjustments to suit various crops
and conditions.
Correct operation reduces crop loss and increases productivity. As well, proper adjustments and timely maintenance
will increase the length of service you receive from the machine.
The variables listed below and detailed on the following pages will affect the performance of the header. You will
quickly become familiar with adjusting the machine to give you the desired results. Most of the adjustments have
been set at the factory, but if desired, the settings can be changed to suit crop conditions.
Header float
Roll tension
Roll timing
Forming shields
Header angle
Cutting height
Disc speed
Ground speed

6.1 Header Float

Header float springs are normally set so 95–105 lbf (426–471 N) is required to lift either end of the header just off
the ground.
In rough or stony conditions, it may be desirable to maintain a lighter setting to protect cutting components.
When float setting is light, it may be necessary to use a slower ground speed to avoid excessive bouncing resulting
in a ragged cut. Faster ground speeds may require additional ground pressure.
169457
Variable
Roll gap
6.1 Header Float, page 65
6.2 Roll Gap, page 67
6.3 Roll Tension, page 70
6.4 Roll Timing, page 71
6.5 Forming Shields, page 74
6.6 Header Angle, page 78
6.7 Cutting Height, page 79
6.7.3 Disc Speed, page 80
6.8 Ground Speed, page 81
65
See Section
Rev. F