MacDon A40D - Operating Variables; Setting Lean Bar

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3.8 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 header. You will quickly
become adept at adjusting the machine to give you the desired results.
Table 3.1 Header Adjustments
Variable Refer to
Lean bar position
3.8.1 Setting Lean Bar, page 78
Auger speed 3.8.2 Adjusting Auger Speed, page 79
Reel speed 3.8.3 Adjusting Reel Speed, page 79
Auger position 3.8.4 Setting Auger Position, page 79
Reel position 3.8.5 Setting Reel Position, page 82
Tine aggressiveness adjustment
3.8.6 Setting Tine Aggressiveness, page 87
Cutting height 3.8.8 Setting Cutting Height, page 89
Header angle 3.8.7 Adjusting Header Angle, page 88
Header float
3.8.11 Checking and Adjusting Float – M Series Self-Propelled Windrowers,
page 99
Feed pan / rock drop tine position
3.8.12 Setting Feed Pan and Rock Drop Tine Position, page 100
Roll gap 3.8.13 Adjusting Conditioner Roll Gap, page 101
Roll timing 4.14.11 Checking and Adjusting Roll Timing, page 216
Roll alignment
4.14.10 Checking/Adjusting Roll Alignment, page 213
Roll tension
3.8.14 Adjusting Conditioner Roll Tension, page 102
Forming shields 3.8.15 Positioning Forming Shields, page 103
Tall crop dividers 3.13.1 Adjusting Tall Crop Dividers, page 119
Ground speed 3.12 Selecting Ground Speed, page 118
3.8.1 Setting Lean Bar
Use the lean bar adjustment to accommodate different crop heights.
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A
Figure 3.108: Auger Header Lean Bar
The lean bar (A) should strike the upper portion of the crop
(roughly 2/3 of the crop height), leaning it away from the
header, and exposing the stalks to the knife.
IMPORTANT:
To prevent structural damage to the header, do NOT operate
with the lean bar removed.
To extend or retract lean bar (A), reposition the hardware in the
adjustment holes as required.
On crops over 1.52 m (5 ft.) high, an optional tall crop divider kit
(B4690) is available that includes lean bar extensions to raise
the lean bar. For more information refer to 3.13.1 Adjusting Tall
Crop Dividers, page 119.
OPERATION