MacDon R85 Rotary Disc 13 Foot Self-Propelled Windrower Header - Manual (Page 75)

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.
Variable See Section
Header float 6.1 Header Float, page 67
Roll gap 6.2 Roll Gap, page 69
Roll tension 6.3 Roll Tension, page 72
Roll timing 6.4 Roll Timing, page 73
Forming shields 6.5 Forming Shields, page 75
Header angle 6.6 Header Angle, page 79
Cutting height 6.7 Cutting Height, page 80
Ground speed 6.9 Ground Speed, page 82
Double windowrowing 6.10 Double Windrowing, page 83
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.
Set the float fine adjustment to mid-range with the windrower float adjustment system in the cab. Refer to your
M-Series self-propelled windrower operator’s manual.
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Rev. E