Cub Cadet ISeries - Manual (Page 151)

CUTTING DECKS AND LIFT SHAFT
145
To remove the blades:
1. Remove the deck as described in the previous
section of this chapter or lift the tractor using a
professional grade lift.
2. Block the blade with a piece of wood to prevent it
from spinning.
3. Remove the blade nuts using an impact wrench
and a 15/16” socket. See Figure 8.3.
4. Remove the blade.
5. When sharpening the blades:
• 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° to 30° angle.
• Sharpen the top of the blade only, maintaining
the factory cutting edge angle.
IMPORTANT: If the cutting edge of the blade
has already been sharpened to within 1 5/8”
from the edge, or if any metal separation is
present, replace the blades with new ones.
• It is important that each cutting blade edge be
ground equally to maintain proper blade bal-
ance.
Figure 8.3
Blade nut
! CAUTION ! CAUTION
Use care around the blade while
removing or tightening the nut. The
blade can spin and cause an injury
to the technician.
! CAUTION ! CAUTION
A poorly balanced blade will cause
excessive vibration and may cause
damage to the tractor and result in
personal injury.
• The blade can be tested by using a blade bal-
ancer. Grind metal from the heavy side until it
balances evenly.
6. Install the blade by following the above steps in
reverse order. Tighten the blade nut to a torque
of 70 - 90 ft-lbs ( 95 - 122 Nm).
NOTE: The I-series blades have a star center.
The star must seat on the raised star on the bot-
tom of the spindle shaft with the fins of the blade
pointing to the deck. If there is damage to the
raised star of the spindle shaft, the spindle must
be replaced. See Figure 8.4.
NOTE: The star on the timed deck spindle has
the tips of two points shaped differently to time
the blade to the spindle. See Figure 8.5.
Figure 8.4
Star center
Figure 8.5
Shorter and fatter
points