Section 2: Adjustments
11/7/18
FDR3690 Rear Discharge Grooming Mower 310-447M
14
Gauge Wheel & Hitch Adjustments
WARNING
!
To avoid serious injury or death:
•
Always shut tractor down using “Tractor Shutdown
Procedure” provided in this manual before dismounting
tractor.
•
Wear a pair of gloves when checking cutting height. Avoid
direct contact with cutting edge of blade.
There are 4 primary adjustments that should be made
prior to actual field operations:
•
•
Front Wheel Cutting Height Adjustment
•
Rear Wheel Cutting Height Adjustment
•
Proper adjustment of each of these items will provide for
higher efficiency, improved cutting performance and
longer blade life.
Gauge Wheel Axle Adjustment
Refer to Figure 2-1 on page 14:
Two gauge wheel axle holes (#1 & #2) are provided in
each gauge wheel yoke. If gauge wheels are mounted in
the upper axle holes (#1), cutting height ranges from
1" to 5 1/2". If gauge wheels are mounted in the lower
axle holes (#2), cutting height ranges from 2" to 6 1/2".
Readjust gauge wheel axles as follows:
1.
Align upper hitch with lower clevises as instructed in
2. Using tractor 3-Point control lever, raise mower off
the ground and support under it with secure blocking
to keep mower from drifting down.
NOTE:
Tractor & mower should be on level ground.
3. While holding the gauge wheel between the yoke
plates, remove axle nut, lock washer, and axle bolt.
4. Keep gauge wheel and bushings between yoke
plates and move gauge up or down to the preferred
axle mounting hole (#1 or #2).
5. Reinsert axle bolt and secure with lock washer and
axle nut. Tighten axle nut to the correct torque.
6. Repeat steps 3-5 for the remaining three gauge
wheels. Make certain all four gauge wheels are in the
same axle mounting hole (#1 or #2).
Front Wheel Cutting Height Adjustment
Seven spacers are provided for each gauge wheel. Two
spacers are 1/4" thick, two are 1/2" thick, and three are 1"
thick. With mower still supported on blocks, reposition
spacers on the front gauge wheels as follows:
1.
While holding one of the front gauge wheels up,
remove linchpin from gauge wheel spindle.
2. Positioning all spacers above the spindle tube allows
for a minimum cutting height of 1" with gauge wheels
mounted in axle hole (#1) and 2" minimum cutting
height when gauge wheels are mounted in axle
hole (#2).
3. Determine a cutting height in 1/4" increments and
subtract the 1" or 2" minimum cutting height from the
determined cutting height.
4. Move enough spacers from above the spindle tube to
below the spindle tube to equal the calculated
subtracted height in step 3 above.
5. Secure gauge wheel and spacers with the linchpin.
6. Repeat steps 1-5 for the other front gauge wheel.
7.
See
“Rear Wheel Cutting Height Adjustment”
to adjust rear gauge wheels.
Section 2: Adjustments
Gauge Wheel and Hitch Adjustments
Figure 2-1
33507
Cutting Height
Front Blade Tip
Rear Blade Tip
Rear Blade Tip Should Be
Equal To Or Higher Than
The Front Blade Tip But
Not By More Than 1/2".
Linchpin
Spindle Tube
Linchpin
Spacers Above
Spindle Tube
Spacers Below
Spacers Above
Spacers Below
1
2
1" Additional
Cutting Height
Adjustment
