Exmark COMMERCIAL 30 Operator's Manual page 15

1. Blade control lock lever
2. Locked position
3. Blade control bail
3. Squeeze the blade control bail against the handle
and release the blade control lock lever; the blade
should engage.
4. Release the blade control bail to disengage the
blade. The blade control lock lever will reset to
lock the blade control bail.
Checking the Blade Brake Clutch
Check the Blade Brake Clutch (BBC) system before
each use to ensure that it is operating properly.
Normal Test:
1. Stop the engine and wait for all moving parts to
stop.
2. Move the lawn mower onto a paved surface in
a non-windy area.
3. Set all four wheels to the 2 1/2 inches (6.4 cm)
cutting height (see Figure 12 and Figure 14).
4. Take a half sheet of newspaper and crumple
it into ball small enough to go under the deck
(about 3 inches or 7.6 cm in diameter) as shown
in Figure 11.
Figure 10
4. Push
5. Unlocked position
6. Squeeze against handle
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1. Crumpled newspaper
5. Place the ball of newspaper 5 inches (12.7 cm) in
front of the lawn mower.
6. Start the engine.
7. Push the blade control lock lever forward to
release the blade control bail (Figure 4).
8. Squeeze the blade control bail against the handle;
the blade should engage.
9. Release the blade control bail. You should hear a
"bang." The blade should stop in three seconds.
The blade control lock lever should reset to lock
the blade control bail.
10. Immediately push the lawn mower over the
newspaper ball.
11. Stop the engine and wait for all moving parts to
stop.
12. Walk around the lawn mower to check for the
newspaper ball. If the ball did not go under the
deck, repeat steps 6 through 11.
13. Pull the lawn mower away from the newspaper.
If the newspaper ball unravels or is shredded,
the blade has not properly stopped, resulting
in an unsafe operating condition. Contact an
Authorized Service Dealer.
15
Operation
Figure 11
2. 5 inches (12.7 cm)
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