Cutting Height - Jacobsen HR 9016 Turbo Parts & Maintenance Manual

3 ADJUSTMENTS
3.5

CUTTING HEIGHT _________________________________________________________

Cutting height for decks can be adjusted from 1 to 5-1/2
in. (25-125 mm) in 1/2 in. (13 mm) increments. Actual
cutting height may vary somewhat from the heights given
depending on turf conditions and other factors.
Note: When cutting undulating areas, lower cutting
heights may cause scalping. Adjust height accordingly to
prevent turf damage.
1. Park the mower on a flat, level surface. Raise the
decks until the caster wheels are raised off the
ground enough so caster wheels can be removed
from deck. Place blocks under decks so they are
supported on all sides.
!
To prevent serious injury, lower deck until it is
resting completely on the supports. This will
prevent it from accidentally lowering while making
adjustments. Disengage
parking brake, stop engine, and remove ignition
key.
To remove inside front caster from side decks, raise
the decks to their full upright position and lock in the
transport position.
2. Figure 3E shows the height adjustment decal for
the casters.
Column 1 - Height of cut
Column 2 - Mount Location
Column 3 - Arrangement of spacers
Adjust spacers in quantity listed. Store extra spacers
on top of spindle. If necessary, reposition wheel
mount in holes indicated for height of cut.
IMPORTANT: Do not reposition the thin thrust
washers (1/16 in.) and leveling washers (1/8 in.) on
the spindle. These washers should remain in the
same position and quantity they were originally
installed. They need only be repositioned if needed
to level new casters or decks, Section 3.2.
3. To adjust rear gauge wheels on front deck, refer to
Figure 3F. Raise front deck approximately 12 in.
and support underneath with blocks. Lower deck so
it is completely resting on blocks
4. Remove pin from rear gauge wheel yoke and
reposition in bracket for desired height of cut. When
setting cutting height at 5-1/2 in., gauge wheel must
be repositioned in arm. Follow wheel mounting
instructions on decal, Figure 3F.
en-12
WARNING
all drives, engage
Mount
Middle
Upper
Thrust
Washer &
Leveling
Washer
Spacers
Under
Mount
Never reposition the thrust washer(s) (1/16" thick)
and leveling washer(s) (1/8" thick)
when setting cut height
Arm
1
Bracket
Cut Bracket Arm
Height Hole Hole
1 3 A
1 1/2 1 B
2 2 C
2 1/2 3 D
3 4 E
3 1/2 5 B
4 6 C
4 1/2 7 D
5 8 E
5 1/2 8 E
Gauge Wheel Adjustment for Front Deck
Tire pressure
Check air pressure in caster tires, while tires are cool.
Maintain air pressure between 20-25 psi (1.38-1.73 BAR)
to improve accuracy of cutting height.
Note: It is important to keep inflation pressures on all
caster and gauge tires equal, within the range specified,
to ensure an accurate, level cut.
Cut Mount No. of Spacers
Height Location
1 1/2 Lower
2 Lower
2 1/2 Lower
2 1/2 Middle
3 Middle
3 1/2 Middle
4 Middle
4 Upper
Lower
4 1/2 Upper
5 Upper
5 1/2 Upper
Figure 3E
B C D E
A
2
3
4
5
6
7
8
F
Wheel
Wheel
Mounting
Mounting
F
F Wheel Mounting Instruction
1 While rotating wheel, tighten
F
nut until wheel is difficult to
rotate.
F
2 Loosen nut 1/4 turn or just
F
until wheel rotates freely.
3 lock nut into place using
F
second nut. Do not allow
F
first nut to rotate when
tightening second nut securely.
F
4 Rotate wheel to check for
F
free rotation with zero end
play.
R
Figure 3F
Under Mount
1
2
3
0
1
2
3
0
1
2
3
R