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REPAIRING OR REPLACING BLADE DRIVER
Torque top nut to 90 ft/lbs
Replacing this nut each
time is recommended.
Pulley does not have a hub.
When removing, just lift it
off like a washer, no puller is
needed.
Machine washers are used
to keep the pulley from
contacting the outer race
of the bearing. When
applying torque to the top
nut the pressure is to the
inner race only and onto
the shank on the inner
shaft.
Bearings are sealed. They
can be driven out and new
ones pressed in for repairing
the spindle assembly. It can
also be purchased as a unit
for easier repair.
Since there are no hubs on
our pulleys, this Belleville
washer is important to apply
friction to the pulley to turn
the shaft. Make sure the
outer lip is down to best
contact the pulley.
Bottom end of the shaft
has the same ¾ in. SAE
threads as the top end.
This washer is wide
enough to to cover the full
bottom of the housing and
is used as a protector for
the seal in the bearing.
Machine washer used
as a spacer just like
those on top of the
upper bearing.
This adaptor block is right
hand threaded onto the ¾ in.
shaft. Torque this block to
90 ft/lbs just like the nut at
the top of the shaft.
Install the blade adaptor block to the bottom of the shaft. Before applying torque, install the
blade to the block using only the outer two bolts. Leave the center bolt out for now. Block
the blade to outer deck edge by using a 4x4 or similar stop. Using a torque wrench on the
top nut above the pulley, apply 90 ft/lbs. The top nut and the adaptor block will equally
receive the tightening. Now put the washer on the center bolt and install into the shaft.
Torque the three bolts to 35 ft/lbs. The center bolt will lock the block so it won’t come off.
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