Cub Cadet RZT-S Zero Shop Manual page 137

Figure 7.9
6. Install the blade by following the previous steps in reverse order. Tighten the blade bolt to a torque of 450 - 600
in-lbs (51 - 68 Nm).
NOTE: There are words stamped onto the blade. They must be facing the ground while cutting grass.
NOTE: Blades that are mounted upside down increase the risk of impacting an object.
7. Test-run the mower in a safe place. Do not put an unsafe mower back into service.
Sharpening the blades:
• Remove 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: It is important that each cutting blade
edge be ground equally to maintain
proper blade balance.
IMPORTANT: Replace any blade with severe nicks
or dents that cannot be removed by
filing.
• The blade can be tested by using a blade bal-
ancer. Grind metal from the heavy side until it
balances evenly.
A poorly balanced blade will
! CAUTION ! CAUTION
cause excessive vibration and
may cause damage to the
mower and result in personal injury.
NOTE: MTD blade balancer AR-SBB-102 or the
blade balancing kit, AR-BSK-1 can be used
to balance the blade. See Figure 7.10.
5.
Blade adapter
Check the blade adapter, motor shaft and hardware
for damage: See Figure 7.9.
• The end of the motor shaft should not wobble or
orbit when the motor shaft is rotated.
• The key in the blade adapter and the keyway in the
motor shaft should engage firmly. The blade
adapter should not spin on the motor shaft.
• The bowtie shaped boss and embossed pins on
the blade adapter should not be deformed. Corre-
sponding holes in the blade should match the
blade adapter and fit securely over the bosses
(drive features) on the blade adapter.
• The blade bolt should not be damaged, and the
Belleville spring that fits between the bolt head and
the blade should still have tension.
AR-BSK-1
Figure 7.10
Decks and Lift Shaft
AR-SBB-102
133