6-23
WPM Drive Systems Manual
BBC / BOS / BCS
4. Turn the mower on its side. Remove the blade and
the BBC cover. Brush any grass clippings out of the
area. Locate the idler arm. Remove the bolt and
locknut that retains the idler pulley. Note the pulley
is on the deck side and there is a spacer between
the pulley and idler arm (Fig. 186). With the pulley
removed, the idler arm can pivot away from the
brake drum and the belt can be removed.
Fig 186
3428-0182
5. Now reach around to the top of the housing and pull
the screw out of the lever (Fig. 187).
Fig 187
3428-0179
Fig 189
3428-0185
There are two bearings pressed into the housing that
the idler shaft rides on. If they are to be replaced,
press them out at this time (Fig. 189).
Fig 188
3428-0192
Slide the lever off the shaft and the idler/brake shaft
can be pulled down and out of the housing (Fig.
188).
A. Bearings
A
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