6-25WPM Drive Systems Manual
BBC / BOS / BCS
Idler Arm System Assembly (Recycler/Rear
Bagger)
1. Start by installing the key and self-propel pulley. The
two bumps on the pulley should face you (Fig. 193).
Slip the belt over the pulley.
Fig 193 3428-0117
2. Install the fl ywheel. The two bumps on the pulley
MUST engage the holes in the fl ywheel. If not, when
the nut on the crankshaft is tightened, the fl ywheel
will push the pulley upwards, either breaking the wall
out of the key groove or crushing the two bumps or
both.
Fig 195 3428-0188
3. Note the two small foam pads inside the brake drum
(Fig. 195).
Fig 194 MVC-727
The fl ywheel must be installed with the side that
looks like 1/2 of a pulley facing the brake drum
(Fig. 194). Push the fl ywheel fi rmly on the taper of
the crankshaft. If you can’t push the fl ywheel on far
enough to hold, do not be concerned. DO NOT drive
it on with a hammer.
A. Bumps B. Holes in fl ywheel
A. Foam pad
A
B
A
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