REPAIRING THE BLADE DRIVER ASSEMBLY
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
between the nut and the
pulley to turn the shaft. Make
sure the outer lip is down to
best contact the pulley.
Pulley does not have a hub.
When removing, lift it off
like a washer, no gear
puller is needed.
Torque top nut to 235
ft/lbs.Replacing this nut
each time it removed is
recommended.
Spacer used to align the blade
pulley to the engine pulley.
Spacers are used between the
bearings to bear the torque
applied on the spindle bolt.
Washer is used to separate the
outer race of the bearing from
the stomp jumper.
Torque this nut to 120 ft/lbs
to keep blades from
tightening on the bolt during
use.
Do not tighten against this
washer. The blades need to be
able to swing freely.
Insert the blade bolt through the blade and washer, then thread into the nut
welded on top of the stump jumper. Bring the bolt up snug to the blade then back it out
about half a turn. Tighten the locking nut on this bolt as it comes up above the welded nut
on the stump jumper. Torque this nut to 120 ft/lbs. If the nut is not secure enough, the bolt
will have a tendency to tighten on the blade and will eventually lock solid. It is imperative
that this blade swing freely on this bolt. When the blade locks up, the blade system gets out
of balance and the mower will shake violently and eventually break the deck around where
the spindle is mounted.
When doing major repairs on the under side of the deck, it might be easier
to tilt the deck on its front end. The only safe way to tilt an engine is with the spark plug
upward. That position allows the oil to go to the back of the crankcase and not forward past
the rings and into the combustion chamber. Also try to do the work while the gas is low in
the tank. Remove the hitch from the deck to make it easier to tilt the mower forward.
