ADJUSTMENTS 3
13
3.15 CUTTING MODES__________________________________________________________
1. The mower may be operated in the
fixed
mode or
the
floating
mode.
2.
Fixed
mode is generally used for cutting heights
greater than 1 in. (25 mm) and the mower does not
require a front roller unless the terrain is rough and
uneven.
If a front roller is required, the roller should be raised
1/4 in. (6 mm) higher than the rear roller and used for
anti-scalp purposes only.
3.
Floating
mode is generally used for cutting heights
less than one inch (25 mm) and a front roller is
required.
If a 2-1/2 in. (63 mm) solid front roller is used, the
cutting height will range from 3/8 to 2-1/8 in. (9 to
54 mm).
If a 3 in. (76 mm) grooved front roller is used, the
cutting height will range from 3/8 to 2-1/4 in. (9 to
57 mm).
4. To convert the mower from
fixed
to
floating
mode,
remove hardware (
H
) from each side of the three
mower frames.
Install a front roller and store hardware (
H
) for future
conversion to fixed mode.
5. To convert the mower from
floating
to
fixed
mode,
assemble hardware (
H
) as shown and remove the
front roller or raise the roller.
Figure 3O
3.16 CUTTING HEIGHT ADJUSTMENT_____________________________________________
1. Raise and lock the lift arms in transport mode.
2. For easier access to the height adjusters on the
motor end of the front reels, Jacobsen recommends
raising the front end of the tractor just a few inches
off the ground then, being careful not to damage the
hydraulic hoses, tilt the front mowers 90 degrees
and tether the mowers together.
3. On the rear mower (center) remove the pin and
collar on the shaft and slide the mower backwards.
4. Always make the reel-to bedknife adjustment
(Sections 3.13 and 3.14)
before
making the cutting
height adjustment.
5. Select
fixed
or
floating
mode and convert the
mower accordingly.
6. Loosen skid mounting hardware (
D
- Figure 3N)
then adjust the cutting height. (A special tool is
provided with the mowers. A 5/8 in. socket and
ratchet are required).
Figure 3P
H
H
H
Tether
