Hydrostatic Drive System; Electrical Circuit - Cub Cadet 20HP Z-Force 48 Operator's And Service Manual

Spindle
Figure 8
square opening in the lower idler arm
assembly and push the idler arm counter-
clockwise. While holding the idler arm
back, loosen the blade drive belt from the
pulley and slide the belt away from the pul-
ley.
d. Remove tension of the PTO belt by moving
the belt tensioning rod. Loosen the belt
retaining bolt.
e. Pull the tensioner pulley away from the belt
and remove the PTO belt then remove the
blade drive belt.
f. Reverse the process to install the belt.
Note:
When replacing belts do not over-
tighten. Adjust the idler pulley so that a ten-
pound pull with a spring scale between two
pulleys deflects the belt about 1/2".
5. Changing the Spindle Assembly
a. Jack up the front of the mowing deck about
one foot and block it in that position.
b. Make sure the blade clutch is disengaged.
c. Remove the deck cover.
d. Remove the drive belts. (See 4. Changing
Blade Drive Belts.)
e. Remove the cutter blade. (See 2. Chang-
ing a Blade.)
f. Using a wrench or socket ratchet remove
four hex nuts, and the four hex head cap
screws. Remove the spindle assembly.
g. Reverse the process to install the spindle
assembly.
B.Hydrostatic Drive System
1. Your zero turn riding mower is equipped with
dual integrated hydrostatic pumps, motors, and
planetary gear reduction transaxles that are
sealed and do not require service, maintenance,
or adjustments.
Hydrostatic
Transaxles
Figure 9
C.Electrical Circuit
Read General Safety Precautions Nos. 9 and 10.
1. Battery: The battery is located beneath the
operator's seat. If so equipped, remove the
fillcaps and check the level of the liquid elec-
trolyte in the battery every 50 operating hours.
If the level in any of the six cells has dropped
below the bottom of the split ring inside the fill
hole, refill the cell with distilled water. To keep
the outside of the battery clean, brush on a
strong solution of bicarbonate of soda and
water and rinse with clean water. Keep the
contacts and cable ends clean with a wire
brush and make sure the connections are
tight. Coat the terminals with petroleum jelly
to prevent corrosion.
2. Battery Removal
When removing the cables from the battery
follow these steps to avoid a short between
the wrench and the frame.
a. Remove the negative (black) cable.
b. Remove the positive (red) cable.
c. Release the hold down straps.
d. Remove the battery without tipping.
3. Battery Storage: When storing the mower for
long periods of time the following guidelines
should be performed.
a. Disconnect the battery cables from the ter-
minals and remove the battery.
b. Clean the battery before storing. A dirty
battery will lose its charge over time.
18
Danger:
Warning: