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

4 Operating the Header

Your header will provide the best performance when it is properly adjusted to suit the crop 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.
Table 4.1 Header Adjustment Procedures
Variable
Header float
Roll gap
Roll tension
Roll timing
Forming shields
Header angle
Cutting height
Ground speed
Double windrowing

4.1 Header Float

Header float springs are normally set so 422–467 N (95–105 lbf) of force is required to lift the header at either end.
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.
Up to three—user defined—float positions can be stored in the windrower's control system. For information on
setting float, refer to the Float Options topic in the windrower operator's manual.

4.1.1 Checking Float

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. Lower the header until lift cylinders are fully retracted.
2. Stop the engine and remove the key.
3. Grasp the front corner of the header and lift. The force to lift should be 426–471 N (95–105 lbf) and should be
approximately the same at both ends. If adjustment is required, refer to
147757
Refer to
4.1 Header Float, page 73
4.2 Roll Gap, page 75
4.3 Roll Tension, page 78
4.4 Roll Timing, page 79
4.5 Forming Shields, page 81
4.6 Header Angle, page 85
4.7 Cutting Height, page 86
4.9 Ground Speed, page 88
4.10 Double Windrowing, page 89
73
4.1.2 Adjusting Float, page 74.
Revision B