Cub Cadet PRO Z 772 L Operation Manual - Page 33

Sharpening the Blades, Changing the Spindle Assembly

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PRODUCT CARE 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). 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). a b c e f g h d Figure 65 WARNING If a blade is bent or otherwise damaged, replace the blade with a new one. Use only original equipment blades. WARNING A poorly balanced blade will cause excessive vibration, may damage the machine, and/or result in personal injury. 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. WARNING Use a torque wrench to tighten the blade spindle hex flange nut to between 100 ft-lbs (136 N-m) and 120 ft-lbs (163 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. 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). 8. Remove the hex flange bolt (a) and flat washer (b) securing the drive pulley (c) and center spindle pulley (d) to the spindle assembly (e) (Figure 67). a b c d f g h i e Figure 67 9. Remove the 6 flange lock nuts (f) securing the center spindle pulley (d), spindle assembly (e) and the support plates (g) to the deck shell (h) (Figure 67). NOTE: The deck support plate (i) does not need to be removed unless all three spindles are being replaced (Figure 67). 10.Reverse the process to install the spindle assembly. When installing the new spindle assembly be sure to install the hardware exactly (Figure 66 and Figure 67). Torque the hex flange bolts to 250 ft-lbs (339 N-m) and the flange lock nuts to 21-32 ft-lbs (28-43 N-m). 33

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33
PRODUCT CARE
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).
Figure 65
WARNING
If a blade is bent or otherwise damaged, replace the blade with a new one.
Use only original equipment blades.
WARNING
A poorly balanced blade will cause excessive vibration, may damage the
machine, and/or result in personal injury.
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.
WARNING
Use a torque wrench to tighten the blade spindle hex flange nut to between
100 ft-lbs (136 N-m) and 120 ft-lbs (163 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).
a
b
c
d
e
f
g
h
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).
8.
Remove the hex flange bolt (a) and flat washer (b) securing the drive pulley (c)
and center spindle pulley (d) to the spindle assembly (e) (Figure 67).
a
b
c
d
e
f
g
h
i
Figure 67
9.
Remove the 6 flange lock nuts (f) securing the center spindle pulley (d), spindle
assembly (e) and the support plates (g) to the deck shell (h) (Figure 67).
NOTE:
The deck support plate (i) does not need to be removed unless all three
spindles are being replaced (Figure 67).
10. Reverse the process to install the spindle assembly. When installing the new
spindle assembly be sure to install the hardware exactly (Figure 66 and Figure
67). Torque the hex flange bolts to 250 ft-lbs (339 N-m) and the flange lock nuts
to 21-32 ft-lbs (28-43 N-m).