Exmark MPKA21 manual Check for Loose Hardware, Service Air Filter Kawasaki Units

Models: MPKA21

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Maintenance

Figure 21

1. Cutting angle

2. Cutting edge radius

8.Check the balance of the blade by placing the center hole of the blade over a nail or screwdriver shank clamped horizontally in a vise (Figure 22). If either end of the blade rotates downward, file that end (not the cutting edge). The blade is properly balanced when neither end drops.

Figure 22

1. Blade

3. Screwdriver

2.Vise

9.For Installation: Make sure to grasp the end of the blade using a rag or a thickly padded glove.

For Blade Brake Clutch Units: Install a sharp, balanced Exmark blade, the accelerator, the anti-scalp cup, and the blade nuts. The sail of the blade must point toward the top of the lawn mower housing for proper installation. Torque the blade nuts to 15-27 ft-lb (20-37 N m).

For Units without a Blade Brake Clutch: Install a sharp, balanced Exmark blade, the accelerator, and blade bolt. The sail of the blade must point toward the top of the lawn mower housing for proper installation. Torque the blade nuts to 50 ft-lb (68 N m).

DANGER

Operating the lawn mower without the accelerator in place can cause the blade to flex, bend, or break. Thrown objects from a broken blade can result in serious injury or death to the operator or bystanders.

Do Not operate the lawn mower without the accelerator.

10.Return the lawn mower to its upright position.

11.Connect the wire to the spark plug.

Check for Loose Hardware

Service Interval: Before each use or daily

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Visually inspect machine for any loose hardware or any other possible problem. Tighten hardware or correct the problem before operating.

Service Air Filter

(Kawasaki Units)

Service Interval: Every 25 hours—Clean the foam pre-cleaner (Kawasaki Units).

Every 300 hours— Replace the paper air filter (Kawasaki Units). (May need more often in dusty conditions. See the Engine manual for additional information.)

Note: Do Not operate the engine without the air filter assembly; extreme engine damage will occur.

1.Stop engine, wait for all moving parts to stop.

2.Disconnect the wire from the spark plug (Figure 10).

3.Remove the cover and clean it thoroughly.

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Exmark MPKA21 manual Check for Loose Hardware, Service Air Filter Kawasaki Units