Lubricating The Pivot Arms; Adjusting The Self-Propelled Drive; Servicing The Spark Plug - Exmark Metro 21 Operator's Manual

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3. Close the fuel valve (Fig. 3).
4. Disconnect the fuel line (Fig. 3) by loosening the tube clamp at the carburetor.
5. Open the fuel valve by turning the lever to the open position (Fig. 3).
6. Drain the gasoline completely from the tank and fuel line into an approved fuel
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
10. Install the fuel tank and fuel line.

4.10 Lubricating the Pivot Arms

Service Interval: Lubricate after every 50 operating hours or when the season ends.
1. Move the rear wheel cutting height levers to the center setting.
2. Wipe the grease fittings with a clean rag (Fig. 26).
3. Install a grease gun onto the fitting and gently apply 2 or 3 pumps of #2 multi-
4.11 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 bar is released, adjust the wheel drive control knob on the rear of the gear box.
1. Close the door in the lawn mower housing and remove the grass bag.
2. If the lawn mower does not self propel, rotate the control knob clockwise 1/2 turn to

4.12 Servicing the Spark Plug:

Service Interval: Check the spark plug after every 100 operating hours.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug (Fig. 4 & 6).
container.
pour it out into an approved fuel container.
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purpose lithium base grease (Fig. 26).
NOTE: Excessive grease pressure may damage the seals.
tighten the belt.
If the lawn mower creeps forward, rotate the knob 1/2 turn counterclockwise to
loosen the belt (Fig. 27).
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Grease Fitting
Figure 26
Control Knob
Figure 27
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