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NOTE: The blade control lever will release rapidly when the blade control bail
is released. To avoid minor injury, keep hands clear of the blade control lever
when the blade control bail is released.
3.3.6 Checking the Blade Brake Clutch
:
Check the Blade Brake Clutch (BBC) system before each use to ensure that it is
operating properly.
Normal Test:
a) Stop the engine and wait for all moving parts to stop.
b) Move the lawn mower onto a paved surface in a non-windy area.
c) Set all four wheels in to the 2-1/2 in. (64 mm) cutting height (Figure 6).
d) Set the ground speed selector to the N (Neutral) position.
e) Take a half sheet of newspaper and crumple it into ball small enough to go
under the deck (about three inches or 76 mm in diameter) as shown in
Figure 5.
FIGURE 5
f) Place the ball of newspaper five inches (12.7 cm) in front of the lawn mower
(Figure 5).
g) Start the engine.
h) Squeeze the blade control bail against the handle.
i) Move the blade control lever to the full forward Latch position. Blades should
engage.
j) Release the blade control bail. You should hear a “bang.” The blade should
stop in three seconds.
k) Immediately push the lawn mower over the newspaper ball.
l) Stop the engine and wait for all moving parts to stop.
m) Walk around the lawn mower to check for the newspaper ball. If the ball did not
go under the deck, repeat steps g) through l).
n) 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.