34
www.ferrisindustries.com
Mower Belt Replacement
(36” Rear Discharge Models)
1. Park the unit on a smooth, level surface such as a
concrete floor. Disengage the PTO, engage the parking
brake, turn off the engine and remove the ignition key.
2. Lower the mower deck to its lowest cutting position and
remove the mower deck guard.
3. Using a 1/2” breaker bar (
A, Figure 30
), place the square
end in the square hole located on the end of the idler
arm (
B
). Carefully rotate the breaker bar
clockwise
,
which will relieve the tension on the belt exerted from the
idler arm.
4. Slide the mower deck drive belt over the edge of the
stationary idler pulley (
C
). Carefully release the tension
on the breaker bar.
5. Remove the old belt and replace with a new one. Make
sure the V-side of the belt runs in the pulley grooves
(
Figure 31
).
6. Install the mower drive belt on the PTO pulley, the
spindle pulleys and all idler pulleys except the stationary
pulley (
D, Figure 31
). Carefully rotate the breaker bar
clockwise
and install the belt on the stationary idler
pulley. Carefully release the tension on the breaker bar.
7. Using the cutting height adjustment handles, adjust the
cutting height of the mower deck to 1-1/2” (3,8 cm).
Both sides of the deck must be adjusted to the same
cutting height.
8. Measure the mower belt tensioner spring (
C, Figure 32
).
The measurement should equal 12-1/4” (31,1 cm). If the
measurement does not equal 12-1/4” (31,1 cm), adjust
the anchor eyebolt (
A
) by turning the adjustment nut (
B
)
until a measurement of 12-1/4” (31,1 cm) is achieved.
9. Reinstall the mower deck guards.
10. Run the mower under no-load condition for about 5
minutes to break-in the new belt.
WARNING
Spring loaded components can kick back
causing injury.
Use extreme caution when rotating the idler arm with the
breaker bar, due to the increased tension in the spring
as the idler arm is being rotated. Injury may result in
the breaker bar is prematurely release while the spring is
under tension.
NOTICE
To avoid damaging belts, do NOT pry belts over pulleys.
Figure 30. Remove the Mower Belt
A. Breaker Bar
B. Idler Arm
C. Stationary Idler Pulley
Figure 31. Mower Deck Belt Routing
A. Mower Drive Belt
B. Adjustable Idler Pulley
C. Spindle Pulley
D. Stationary Idler Pulley
Figure 32. Mower Belt Tensioner Spring Measurement
A. Anchor Eyebolt
B. Adjustment Nut
C. Mower Belt Tensioner Spring
A
C
B
A
C
C
D
B
12-1/4”
(31,1 cm)
C
A
B
Regular Maintenance
Not
for
Reproduction
