Fasten with the four (4) 711242 bolts, 711515 flat washer and 711546 lock washer.
For cylindrical scrub deck only:
Remove the two access doors (one each end) by removing the (3) nyloc nuts.
Install the brushes by sliding through the access opening.
Align the notches on the brush with the drive pins on the hub.
Push brush all the way until it bottoms out.
Insert access door hub to the other end of brush.
Reinstall nuts and tighten.
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