Exmark 4500-686 Rev. B Adjustments, Adjusting the Self-Propel Drive, Self-PropelledUnits Only

Maintenance

The fuel filter (screen) element is located inside the fuel tank (if applicable).

Note: The ECSHN21 does not have a removable fuel tank.

1.Stop the engine and wait for it to cool down. Note: Drain gasoline for a cold engine only.

2.Disconnect the wire from the spark plug (Figure 11).

3.Close the fuel valve.

4.Disconnect the fuel line by loosening the tube clamp at the carburetor.

5.Open the fuel valve by turning the lever to the open position.

6.Drain the gasoline completely from the tank and fuel line into an approved fuel container.

7.Remove the fuel tank from the mower.

8.Close the fuel valve.

9.Pour a small amount of fuel in the fuel tank, move the fuel around in the tank, and pour it out into an approved fuel container.

10.Install the fuel tank and fuel line.

Adjustments

Note: Wait for all moving parts to stop and remove spark plug wire before servicing, cleaning, or making any adjustments to the unit.

Adjusting the Self-Propel

Drive

(Self-Propelled Units Only)

If the lawn mower does not self-propel or has a tendency to creep forward when the control bail is released, adjust the drive cable nuts as shown in Figure 33.

DANGER

Checking the operation of the mower with the belt cover removed will allow debris to be thrown in the operator’s or bystander’s direction and can result in serious personal injury or death.

Do Not operate the unit when cover is not in place.

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

2.Remove the belt cover by pulling upward on the back of the cover to unsnap the front and back cover tabs. Remove any debris under the cover.

Figure 32

1.Belt cover tabs

30