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
Disc speed
Ground speed

4.1 Header Float

Header float springs are normally set so 43–48 kg (95–105 lb) 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.
Set the float fine adjustment to MID-RANGE with the windrower float adjustment system in the cab (refer to your
windrower operator's manual).
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
Self-Propelled Windrowers, page 84
Windrowers, page 84.
214014
Refer to
4.1 Header Float, page 83
4.2 Roll Gap, page 86
4.3 Roll Tension, page 89
4.4 Roll Timing, page 90
4.5 Forming Shields, page 92
4.6 Header Angle, page 96
4.7 Cutting Height, page 97
4.8 Disc Speed, page 99
4.9 Ground Speed, page 100
or refer to
4.1.3 Removing and Restoring Float for M1240 Self-Propelled
83
4.1.2 Adjusting Float for M200 and M205
Revision B