Caut i on – MacDon A40-D User Manual
Page 93
SECTION 6 OPERATION
169000 / 169040
91
Revision E
6.17.16 Ground
Speed
CAUTION
Reduce speed when turning, crossing
slopes, or when travelling over rough
ground.
a. Tractor/windrower ground speed should not
exceed 8 mph (13 km/h). For most crop
conditions a ground speed of 5 mph (8 km/h)
has been found satisfactory.
b. Choose a ground speed that allows the sickle to
cut the crop smoothly and evenly.
c. The chart below indicates the relationship
between ground speed and area cut for three
header sizes.
Example: At ground speed of 5 mph (8 km/h) with a
16 FT header, the area cut would be approximately
10 acres (4 hectares) per hour.
0
5
10
15
20
25
1
2
3
4
5
6
7
8
9
10
miles/hour
acr
es/
h
o
u
r
0
2
4
6
8
10
1.6
3.2
4.8
6.4
8.0
9.7
11.3 12.9
14.5 16.1
kilometers/hour
he
c
ta
re
s
/hour
16 FT
14 FT
18 FT