MacDon D65 SP DHOM - Manual (Page 62)

OPERATION
4.7 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 allows cutting of more acres. 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 machine. You will
quickly become adept at adjusting the machine to get the desired results.
Variable Section
Cutting Height 4.7.1 Cutting Height, page 50
Header Float 4.7.2 Header Float, page 55
Header Angle Controlling Header Angle, page 56
Reel Speed 4.7.4 Reel Speed, page 56
Ground Speed 4.7.5 Ground Speed, page 57
Draper Speed 4.7.6 Draper Speed, page 57
Knife Speed 4.7.7 Knife Speed, page 58
Reel Height 4.7.8 Reel Height, page 58
Reel Fore-Aft Position 4.7.9 Reel Fore-Aft Position, page 58
Reel Tine Pitch 4.7.10 Reel Tine Pitch, page 65
Crop Divider Rods 4.7.12 Crop Divider Rods, page 72
4.7.1 Cutting Height
The header is designed to allow an Operator to cut the crop above the ground for a desired stubble height or to
cut the crop at ground level with the header on the ground. Cutting height will vary, depending on type of crop,
crop condition, etc.
Cutting Off The Ground
The stabilizing wheel system is designed to minimize bouncing at the header ends and may be used to float the
headers to achieve an even cutting height when cutting above ground level in cereal grains. The system can
provide very even stubble height and greatly reduces operator fatigue.
Cutting height is controlled with a combination of the combine header height control and a stabilizer wheel system,
or a stabilizer/slow speed transport wheel system.
The stabilizer wheel system or a stabilizer/slow speed transport wheel system are only available on 30, 35, and
40 ft. headers.
Adjusting Stabilizer/Slow Speed Transport Wheels
The proper setting requires balancing the amount of header weight carried by the float and the stabilizer/slow
speed transport wheels.
1. Raise the header so that the stabilizer wheels are off the ground. Shut down engine and remove the key.
2. Check that the float is working properly. Refer to your windrower operator’s manual for instructions.
169899 50 Revision A