MacDon A40-D User Manual
Page 65

SECTION 6 OPERATION
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Revision E
6.17 HEADER OPERATION
Satisfactory function of the windrower 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 windrower. You will quickly become adept at 
adjusting the machine to give you the desired 
results. 
VARIABLE SECTION
Lean Bar Position
6.17.1
Auger Speed
6.17.2
Reel Speed
6.17.3
Auger Position
6.17.4
Reel Position
6.17.5
Tine Aggressiveness Adjustment 6.17.6 
Cutting Height 
6.17.8
Header Angle
6.17.9
Header Flotation
6.17.10
Feed Pan / Rock Drop Tine Position
6.17.11
Roll Gap/Timing/Alignment
6.17.12
Roll Tension
6.17.13
Forming Shields
6.17.14
Tall Crop Dividers
6.17.15
Ground Speed
6.17.16
6.17.1 Lean Bar Position
IMPORTANT
To prevent structural damage to the 
header, do not operate with lean bar 
removed. 
Use the lean bar adjustment to accommodate 
different crop heights. 
The lean bar should strike the upper portion of 
the crop, leaning it away from the header, and 
exposing the stalks to the sickle. 
To extend or retract lean bar, re-position 
hardware in adjustment holes as required. 
Refer to illustration.
See also Section 6.17.15 Tall Crop Dividers.
