47
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12. Re-install the mower deck guards and the floor pan.
13. Run the mower under no-load condition for about five (5)
minutes to break in the new belts.
Short Right Hand Deck Belt Replacement
(72" Mower Deck)
NOTICE To avoid damaging belts, do not pry over
pulleys.
1. Park the unit on a smooth level surface such as a
concrete floor. Disengage the PTO, engage the parking
brake, turn the ignition switch to OFF, and remove the
ignition key.
2. Lower the mower deck to it’s lowest cutting position and
remove the mower deck guards and floor pan to gain
access to the mower deck drive belts.
3. Remove the long left hand deck belt. See Long Left Hand
Deck Belt Replacement for removal instructions.
WARNING
Use extreme caution when rotating the idler arm, due to
the increased tension in the spring as the idler arm is being
rotated. Injury may result if the idler arm is prematurely
released while the spring is under tension.
4. Loosen the jam nut (A, Figure 77) on the carriage bolt (B)
and the 3/8" nut (C) that secure the rear idler pulley (D) to
the deck. This will allow the rear idler pulley to move in it's
adjustment slot allowing the belt to be removed.
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5. Rotate the spindle drive idler arm (E) clockwise, which
will relieve the tension on the short right hand belt (F)
exerted from the idler arm. Remove the belt from the rear
back side idler pulley and then the right hand spindle
pulley (G). Carefully release the tension on the idler arm.
6. Remove the spring anchor hardware (H) that anchors the
idler arm spring (I) to the mower deck.
7. Remove the old short right hand belt from the front idler
pulley (J) and the center spindle pulley (K).
8. Install the new short right hand belt onto the center
spindle pulley and the front idler pulley.
9. Re-connect the idler arm spring. Install the 3/8 washer
and then the spacer onto the shaft of the 3/8 bolt. Install
the hook of the idler arm spring around the body of the
spacer and then install the bolt into the spring anchor tab
and then secure with the 3/8 nylock flange nut.
10. Rotate the spindle drive idler arm clockwise, which will
relieve tension on the belt exerted from the idler arm. Re-
install the belt on the right hand spindle pulley and then
the rear back side idler pulley. Make sure that the V-side
of the belt runs in grooves of the spindle pulleys and the
front idler pulley and that back side of the belt contacts
the face of the back side idler pulley. Carefully release the
tension on the idler arm.
11. Set the mower deck to the 3-1/2" (8,9 cm) cutting
position.
12. Measure the coil-to-coil length (L) of the idler arm spring.
The measurement should equal 6-3/8" (16,2 cm) ± 1/8
(0,32 cm). If not, turn the adjustment nut (M) until the
measurement is achieved.
13. Tighten the jam nut and the 3/8" nut that secures the rear
back side idler pulley to the deck.
14. Re-install the long left hand deck belt. See Long
Left Hand Deck Belt Replacement for re-installation
instructions.
15. Re-install the mower deck guards and the floor pan.
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