MTD "A" Series Professional Shop Manual page 12

A and B series mowers
3. Remove the blade bolt and diamond-shaped
Belleville blade spring using a 5/8" wrench.
Use care around the blade
! CAUTION ! CAUTION
while removing or tightening the
bolt. The blade can spin and
cause injury.
4. Lift away the blade. See Figure 2.2.
5. Inspect the blade. If it is bent or worn beyond proper
sharpening, replace it with a new blade.
6. Sharpen and balance the blade if it is not badly
worn.
7. Check the blade adapter, crankshaft and hardware
for damage.
8. Install the blade with the blade adapter and
Belleville spring washer properly positioned. Tighten
the blade bolt to a torque of 38-50 ft.-lb. (51-68 Nm).
NOTE: OEM blades manufactured by MTD are
stamped with the part number and the word
"BOTTOM". The word bottom should face
the ground when the mower is in its normal
operating position. See Figure 2.3.
8
Blade
Belleville spring
Bolt
Figure 2.2
Bottom stamped in blade
Figure 2.3