Simplicity ZT2561F - Manual (Page 32)

Troubleshooting, Adjustment & Service
HYDRAULIC PUMP DRIVE BELT
REPLACEMENT
1. Park the tractor 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. Remove the PTO drive belt (see MOWER BELT
REPLACEMENT for removal instructions).
3. Loosen the nut towards the front of the machine on
the spring anchor hook (H, Figure 32) to release the
majority of the belt tension. Use caution and remove
the nut to completely release the tension.
4. Remove the old belt and replace it with the new one.
Make sure the V-side of the belt runs in the grooves
of the crankshaft pulley and pump pulleys (B & C).
5. Reinstall the anchor hook (H) into the anchor tab and
loosely fasten the nut. Adjust the spring until a
measurement of 7-3/4” (19,7cm) is achieved from the
outside if the spring hooks. Tighten nut.
6. Reinstall the PTO drive belt.
FRONT
Figure 32. Hydraulic Pump Drive Belt Replacement
A. Pump Drive Belt E. Idler Pulley
B. Crankshaft Pulley F. Idler Arm
C. Pump Pulley G. Spring
D. Idler Pulley (stationary) H. Spring Anchor Hook
B
E
F
A
C
C
H
D
G
7-3/4”
(19,7cm)
28 00
Measure 1st
Add / Remove
5/8" SAE Washers
Measure 2nd
14-1/4"
36,2cm
Adjust Here
Adjust Here
Adjust Here
Figure 30. Lift Rod Adjustment
Figure 31. Deck Level & Spring Length Adjustment
5. See Figure 30. Measure the distance between the
rear lift pivots and the suspension-mounted lift pivots.
Add or remove 5/8” SAE washers from in between
the deck lift rod and the lift link until measurements
are equal.
6. Adjust the front eyebolts until the chains are tight and
the deck is still resting on the 2 x 4’s. Tighten jam
nuts. See Figure 31.
7. Loosen the nuts and allow the rear of the deck to
rest on the 2 x 4’s and 1/4” spacers. Slide the chains
down in the slots until the chains are tight and tight-
en the nuts. See Figure 31.
8. Remove all 2 x 4 blocks and spacers from under the
mower deck.
9. With the deck height adjustments complete and cut-
ting height still set at 4", adjust the deck lift spring to
a compressed length of 14-1/4" (36,2cm). Be sure to
measure the spring only. Adjust the length of the
deck lift spring by tightening or loosening the (2) 5/8”
hex nuts that are closest to the spacer at the front
end of the spring (see Figure 31). After adjustment
is made, tighten these two nuts together. Perform
this step to both springs.