Service Manual

8-29
WPM Drive Systems Manual
BBC/BOS/BCS
BBCCableInstallation(Recycler/Rear
Bagger)
1. Slide a new BBC cable into the BBC cable lever.
Install the end of the cable sheath in recess provided
in the left control housing half.
2. Before installing the right control housing half, make
sure that the traction and BBC ends are completely
seated in their recesses. Also make sure that the
sleeve on the upper carriage bolt passes completely
through the BBC control box components to the
handle. Finally, make sure that the roll pin in the
rocker arm passes through the hole in the control
bar. Install the right control housing half. Secure with
two nylon locknuts.
Note: Theangedlocknuttsontheuppercarriage
bolt.
3. Install the three anged head screws securing the
control box halves.
4. Bend the throttle control locking tab forward so that
it will provide positive engagement with the throttle
control. Install the throttle control.
5. Hook the spring on the end of cable and into the
bellcrank arm (Fig. 237).
BLADEOVERRIDESYSTEM(BOS)
BLADECLUTCHSYSTEM(BCS)
Both Toro and Lawn-Boy use the same blade clutching
system on some models. On Toro it is named the Blade
Override System. On Lawn-Boy it is named the Blade
Clutch System.
It is designed to allow the blade to stop while the engine
keeps running. This is especially helpful when bagging,
as the engine will not need to be restarted each time you
stop to empty the bag.
Disassembly
The following steps are disassembly of the system,
including the steps necessary to replace the blade drive
and self-propel belts.
1. Drain the fuel and oil and tip the mower on its side.
We recommend carburetor side up to prevent any
oil or gasoline from draining into the air lter and
causing hard starting.
2. Remove the two locknuts securing the blade (Fig.
238).
6. Slip end of cable under screw. See page 7-16.
Fig237 3428-0173
Fig238 MVC-195X