SECTION 00 -- GENERAL INFORMATION -- CHAPTER 2
00-5
CUTTER BAR FLOTATION
Cutter bar flotation is controlled by the height of the
frame off the ground and the length of the flotation
spring.
Adjust the limit chains so the hitch pins, 1, are as
close to (but not less than) 457 mm (18 in) as possible
from the ground. This adjustment is explained in
detail in the “Attaching the Mower to the Tractor”
section of this manual.
NOTICE: If the high stubble kit is installed on the
mower, adjust frame height to 508 mm (20 in) from
ground in order to provide adequate flotation.
The tractor hydraulic valve should be placed in the
“float” position to allow the cutter bar to follow the
ground.
Model MD72
Model MD82
Initially the flotation spring should be adjusted to a
length, A, between the ends of the spring coils of 845
mm (33-1/4 in) for the MD72 disc mower or 902 mm
(35-1/2 in) for the MD82 disc mower.
The flotation spring can be lengthened or shortened
as field conditions vary to achieve the flotation
desired; lengthening the spring increases the
amount of flotation (makes the cutter bar lighter),
while shortening the spring decreases the amount of
flotation (makes the cutter bar heavier).
A3679-2
1
457 mm
(18 in)
2
A
2
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