MacDon FD75 - 3.7 Header Operating Variables

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3.7 Header Operating Variables
Satisfactory function of the header in all situations requires making proper adjustments to suit various crops
and conditions.
Correct operation reduces crop loss and increases productivity. Proper adjustments and timely maintenance will
increase the length of service you receive from your machine.
The variables listed in Table 3.5, page 53 and detailed on the following pages will affect the performance of the
header.
You will quickly become adept at adjusting the machine to achieve the results you desire. Most of the adjustments
have been preset at the factory, but the settings can be changed to suit crop conditions.
Table 3.5 Operating Variables
Variable
Refer to
Cutting height 3.7.1 Cutting Height, page 53
Header float
3.7.2 Header Float, page 58
Header angle
3.7.4 Header Angle, page 76
Reel speed
3.7.5 Reel Speed, page 79
Ground speed 3.7.6 Ground Speed, page 80
Draper speed
3.7.7 Draper Speed, page 80
Knife speed 3.7.8 Knife Speed, page 82
Reel height 3.7.9 Reel Height, page 84
Reel fore-aft position
3.7.10 Reel Fore-Aft Position, page 84
Reel tine pitch
3.7.11 Reel Tine Pitch, page 91
Crop divider rods 3.7.12 Crop Dividers, page 94
3.7.1 Cutting Height
The FD75 FlexDraper
®
Header is capable of cutting the crop to a desired stubble height or cutting as close as
possible to the ground. Cutting height will vary depending on the type of crop, crop conditions, etc.
Cutting off the Ground
The stabilizer wheel system is designed to minimize bouncing at the header ends and float the header to achieve
an even cutting height when cutting above ground level in cereal crops. The system produces even stubble height
and greatly reduces operator fatigue.
Cutting height is controlled using a combination of the combine header height control and a stabilizer wheel system
(or stabilizer/slow speed transport wheel system).
If stabilizer wheels are installed, refer to Adjusting Stabilizer Wheels, page 55 to change the wheel position.
If stabilizer/slow speed transport wheels are installed, refer to Adjusting Stabilizer/Slow Speed Transport Wheels,
page 54 to change the wheel position.
OPERATION