Toro 22173 Operator's Manual page 12

Special Test
1. Follow steps 1 through 7 from the Normal Test on
page 11.
2. Move the control bar down to its lowest position
(Position B in Fig. 13).
3. Bring the control bar up into the middle position about
5 inches (12.7 cm) below the handle cross bar
(Position C in Fig. 14).
Figure 14
Note: This intermediate position (C) is not the normal
operating position of the control bar. However, it helps to
detect a sticking BBC system early enough to prevent an
unsafe condition later.
4. Release the control bar (Position B in Fig. 14).
Note: If you hear a loud "bang," you have raised the
control bar too high. Repeat steps 2 through 4 above, but
do not raise the control bar as high as in step 3.
5. Immediately push the lawn mower over the newspaper
ball.
6. Stop the engine and wait for all moving parts to stop.
7. Walk around the lawn mower to check for the
newspaper ball. If the ball did not go under the deck:
A. Place the ball of newspaper 5 inches (12.7 cm) in
front of the lawn mower (Fig. 10).
B. Start the engine.
C. Follow steps 2 through 6 above.
8. Pull the lawn mower away from the newspaper. If the
newspaper ball unravels or is shredded, the BBC
system could be deteriorating to the point where it
could result in an unsafe operating condition. Contact
an Authorized Service Dealer for an inspection and
repair of your lawn mower.
If the blade brake clutch system is inoperative, the
blade will continue to rotate when you release the
control bar. Contact with blade could occur,
causing serious injury.
Check the BBC operation before each use.
Never use a BBC-equipped lawn mower with an
inoperative safety system.
Take your lawn mower to an Authorized
Service Dealer for repair if the safety system
fails to operate properly.
Test Using the Grass Bag
m-5086
You can use the grass bag to perform an additional test to
check the blade brake clutch mechanism:
1. Install the empty grass bag on the discharge tunnel.
2. Start the engine.
3. Push the control bar (Fig. 11) down to its lowest
position.
4. Lift the control bar to the normal blade engaged
position about 1 inch (2.5 cm) below the handle. The
bag should begin to inflate, indicating that the blade is
engaged and rotating.
5. Release the control bar. If the bag does not
immediately deflate, it indicates that the blade is still
rotating. The blade brake clutch mechanism may be
deteriorating, and, if ignored, could result in an unsafe
operating condition. Have the lawn mower inspected
and serviced by an Authorized Service Dealer.
12
Danger