Operation

Figure 12

1. Crumpled newspaper

2. 5 inches (12.7 cm)

6.Place the ball of newspaper 5 inches (12.7 cm) in front of the lawn mower.

7.Start the engine.

8.Squeeze the blade control bail against the handle.

9.Move the blade control lever to the full forward Latch position. Blades should engage.

10.Release the blade control bail. You should hear a “bang.” The blade should stop in three seconds.

11.Immediately push the lawn mower over the newspaper ball.

12.Stop the engine and wait for all moving parts to stop.

13.Walk around the lawn mower to check for the newspaper ball. If the ball did not go under the deck, repeat steps 7 through 12.

14.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.

DANGER

If the blade brake clutch system is inoperative, the blade will continue to rotate when you release the blade control bail. Contact with the blade could occur, causing serious injury.

Check the BBC operation before each use.

Never use the 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

1.Install the empty grass bag on the discharge tunnel.

2.Start the engine.

3.Squeeze the blade control bail against the handle.

4.Move the blade control lever to the full forward Latch position. The bag should begin to inflate, indicating that the blade is engaged and rotating.

5.Release the blade control bail. If the bag does not immediately deflate, it indicates that the blade is still rotating. The blade brake clutch mechanism may deteriorating, and, if ignored could result in an unsafe operating condition. Have the lawn mower inspected and serviced by an Authorized Service Dealer.

Adjusting the Cutting Height

Each wheel is adjusted individually with a wheel height adjustment lever. The cutting heights are listed in the following table.

Cutting Heights

3/4 inch (19 mm)

2 1/4 inches (57 mm)

1 1/4 inches (32 mm)

2 3/4 inches (70 mm)

 

 

1 3/4 inches (44 mm)

3 1/4 inches (83 mm)

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Exmark MPKA21 manual Test Using the Grass Bag, Adjusting the Cutting Height