Service Manual

8-14
WPM Drive Systems Manual
BBC/BOS/BCS
BBC Cover and Screen:
The BBC cover and screen are two important com-
ponents that keep dirt and debris out of the BBC
mechanism. The screen (Fig. 201) is installed, sharp
edge down, to allow air to be drawn in through the
screen panel on top of the deck and down underneath
the deck. This venting improves the airow underneath
the deck thereby improving quality of cut and bagging
performance. Be sure to clean the screen on occasion,
especially if quality of cut or bagging performance has
degraded.
5. Hook the end of the control link into the brake plate
lever, then slip the BBC control cable onto the
bellcrank. Finally, slip the shoulder bolt through the
hole in the cable bracket support and secure with the
anged nut.
Note: Theserrationsintheangednutmustfully
seatonthecontrolcablebracket.
6. Check the adjustment of the BBC cable as described
under “BBC Cable Removal (Recycler/Rear
Bagger)” on page 6-19.
7. Slide the black plastic transmission cover into place
making sure that the belt slides into the grooves
provided. Some contact between the belt and the
cover may be evident.
Note: Itmaybenecessarytopushthetransmission
backslightlytogetthetransmissioncoverto
slideincompletely.
8. Place the upper BBC cover into position on the
housing and secure with the two self-tapping anged
head capscrews.
9. Check for proper operation of all controls, especially
the BBC, and adjust as necessary.
Note: Thespringlengthonthebellcrankassembly
istheprimaryindicatorofproperBBC
adjustment.Itshouldmeasure1”(25mm)with
thebladeengagedwhenproperlyadjusted.
Ifspringmeasuresmorethan1-1/4”(32mm),
correctbyadjustingtheBBCcontrolcable.
Fig201 g. 43
A. BBC ywheel C. Bearing block
B. Brake drum D. Screen