Exmark COMMERCIAL 21 Adjusting the Blade Brake Cable Blade Brake Clutch Units Only, Maintenance

Models: COMMERCIAL 21

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1.Adjustment of drive cable nuts

Maintenance

3.If the lawn mower does not self propel with bail engaged, tighten the belt by turning the drive cable nuts clockwise. To maximize belt life, Do Not overtighten the belt.

If the lawn mower creeps forward without the bail engaged, loosen the belt by turning the drive cable nuts counterclockwise.

cover tabs (see Figure 30). Remove any debris under the cover.

4.Loosen the cable clamp screw until the cable conduit slides (see Figure 32).

Figure 31

1.Adjustment of drive cable nuts

4.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

5.Check the operation for desired drive control.

6.Repeat steps 2 through 5 as necessary for further adjustment.

Note: Adjustment to obtain desired ground speed at full bail travel may be made in order to accommodate slower speeds.

Adjusting the Blade

Brake Cable

(Blade Brake Clutch Units

Only)

Adjust whenever a new blade brake cable assembly is installed or if the blade control lock lever does not operate properly.

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

2.Disconnect the wire from the spark plug.

3.Remove the belt cover by pulling upward on the back of the cover to unsnap the front and back

Figure 32

1. Spring

3. Cable clamp screw

2.Cable conduit

5.Pull the cable until there is approximately 1/8 inch in slack. Do Not put tension on the spring.

6.Tighten the screw to lock the adjustment in place.

7.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

8.Connect the wire to the spark plug.

9.Check the operation of the blade control lock lever (see Figure 12). The lever must reset itself to lock out the blade control bail. If it does not, repeat steps 4 through 8.

10.Perform the “Checking the Blade Brake Clutch (Blade Brake Clutch Units Only)” procedure in Operation.

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Exmark COMMERCIAL 21 Adjusting the Blade Brake Cable Blade Brake Clutch Units Only, Maintenance, Spring, Cable clamp screw