Cub Cadet Pro Z 900 Serie Manuel De L'opérateur page 34

To replace or reinstall the blade:
1. Put the blade in place on the spindle shaft. Be sure to install the blade with
the side marked "Bottom" or "Grass Side" (or with a part number stamped in
it) facing the ground when the deck is reinstalled on the mower and in the
operating position.
2. Carefully place the flat washer on the spindle shaft. Be sure that the splines at the
base of the spindle shaft threads line up with the washer splines (Figure 64).
3. Secure the blade from turning clockwise when reinstalling the flange lock nut
(the opposite direction of blade removal).
4. Install the flange lock nut onto the spindle shaft over the blade and flat washer.
Torque to 100-130 ft-lbs (136-176 N-m).
Never mow with dull blades. Blades that are bent should be replaced. The
cutting blades are sharp and can cause severe injury. Wrap the cutting
surface of the blade with a rag and wear heavy gloves to avoid injury.
Sharpening the Blades
1. Set the parking brake.
2. Clean any debris from the blades. Keep blades sharp and free of build up at
all times.
3. To properly sharpen the cutting blades, remove equal amounts of metal from
both ends of the blades along the cutting edges, parallel to the trailing edge, at a
25°-30° angle. Always grind each cutting blade edge equally to maintain proper
blade balance (Figure 65).
If a blade is bent or otherwise damaged, replace the blade with a new one.
Use only original equipment blades.
A poorly balanced blade will cause excessive vibration, may damage the
machine, and/or result in personal injury.
PRODUCT CARE
Figure 64
WARNING
Figure 65
WARNING
WARNING
4. Test the blade's balance using a blade balancer. Grind metal from the heavy side
until it balances evenly.
NOTE: When replacing the blade, be sure to install the blade with the side
marked ''Bottom'' or "Grass Side" (or with a part number stamped in it) facing the
ground when the mower is in the operating position.
Use a torque wrench to tighten the blade spindle hex flange nut to between
100 ft-lbs (136 N-m) and 130 ft-lbs (176 N-m).
Changing the Spindle Assembly
1. Remove the deck as instructed in the Deck Removal section.
2. Jack up the front of the mowing deck about one foot and block it in that position.
3. Remove the deck cover.
4. Remove the drive belts. See Replacing the Deck Belt section.
5. Remove the blade. See Replacing the Blades section.
6. Remove the hex flange bolts (a) and flat washers (b) securing the left and right
spindle pulleys (c) to the spindle assembly (d) (Figure 66).
7. Remove the 6 flange lock nuts (e) securing the left and right spindle assemblies
(d) and the support plates (f) to the deck shell (g) (Figure 66).
NOTE: The deck support plate (h) does not need to be removed unless all three
spindles are being replaced (Figure 66).
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WARNING
a
b
c
e
f
g
h
d
Figure 66