Jacobsen R-311T 69171, Parts & Maintenance Manual

Page: 15 / 182

ADJUSTMENTS 3
en-15
3.14 CUTTING HEIGHT _________________________________________________________
Level the front mower before setting the cutting height for
the first time. Do not remove the cutting units from the
mower to change cutting height.
Cutting height for decks can be adjusted from 1 to 5-1/2 in.
(25-140 mm) in 1/2 in. (13 mm) increments. Actual cutting
height may vary somewhat from the heights given
depending on turf conditions, tire variances and other
factors.
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.
2.
Figure 3M
shows the height adjustment decal for the
casters.
Column 1 - Height of Cut
Column 2 - Arrangement of Spacers
Column 3 - Arm Position
Column 4 - Wing Mower Mounting Location
Column 5 - Front Mower Mounting Location
3. Adjust spacers in quantity listed. Store extra spacers
on top of spindle. Always leave one thin spacer above
and below caster arm.
4. For cutting heights 3 in. (76 mm) and below, caster
arms should be assembled to upper set of holes
(A)
.
For cutting heights above 3 in. (76 mm), caster arms
should be assembled to lower set of holes
(B)
.
Figure 3M
NOTICE
When cutting undulating areas, lower cutting heights
may cause scalping. Adjust height accordingly to
prevent turf damage.
WARNING
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 all drives, engage parking brake, stop
engine, and remove ignition key.
!
NOTICE
After setting cutting height, fully lower cutting units onto a
flat, hard surface, stop engine, and measure the
distance from the blade tips to the ground. If the distance
is different from the desired cutting height, make
adjustments as necessary. Cut in a small test area and
make any final adjustments for desired turf appearance.
1.0
2.0
3.0
4.0
5.0
1.0
3.0
5.0
1.5
2.5
3.5
4.5
2.5
4.5
5.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
A
B
"X"
"X"
0
1
2
3
4
0
1
2
3
4
A
A
A
A
A
B
B
B
B
B