Operating Variables; Setting Lean Bar - MacDon A40D Operator's Manual

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
Lean bar position
Auger speed
Reel speed
Auger position
Reel position
Tine aggressiveness adjustment
Cutting height
Header angle
Header float
Feed pan / rock drop tine position
Roll gap
Roll timing
Roll alignment
Roll tension
Forming shields
Tall crop dividers
Ground speed

3.8.1 Setting Lean Bar

Use the lean bar adjustment to accommodate different crop heights.
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
Crop Dividers, page 119.
262334
OPERATION
Refer to
3.8.1 Setting Lean Bar, page 78
3.8.2 Adjusting Auger Speed, page 79
3.8.3 Adjusting Reel Speed, page 79
3.8.4 Setting Auger Position, page 79
3.8.5 Setting Reel Position, page 82
3.8.6 Setting Tine Aggressiveness, page 87
3.8.8 Setting Cutting Height, page 89
3.8.7 Adjusting Header Angle, page 88
3.8.11 Checking and Adjusting Float – M Series Self-Propelled Windrowers,
page 99
3.8.12 Setting Feed Pan and Rock Drop Tine Position, page 100
3.8.13 Adjusting Conditioner Roll Gap, page 101
4.14.11 Checking and Adjusting Roll Timing, page 216
4.14.10 Checking/Adjusting Roll Alignment, page 213
3.8.14 Adjusting Conditioner Roll Tension, page 102
3.8.15 Positioning Forming Shields, page 103
3.13.1 Adjusting Tall Crop Dividers, page 119
3.12 Selecting Ground Speed, page 118
3.13.1 Adjusting Tall
Figure 3.108: Auger Header Lean Bar
78
A
Revision A