Check Spark Plugs; Adjustments; Adjusting The Self-Propel Drive; Adjusting The Blade Brake Cable - Exmark METRO 26 Operator's Manual

Check Spark Plugs

Service Interval: Every 100 hours
1. Stop the engine and wait for all moving parts to
stop.
2. Disconnect the wire from the spark plug
(Figure 5).
3. Clean around the spark plug.
4. Remove the spark plug from the cylinder head.
Note: Replace a cracked, fouled, or dirty spark
plug. Do Not clean the electrodes because grit
entering the cylinder can damage the engine.
5. Set the gap on the plug to 0.030 inch (0.76 mm)
(Figure 25).
Figure 25
1. Side electrode
2. Center electrode
insulator
6. Install the spark plug and the gasket seal.
7. Torque the plug to 17 ft-lb (23 N-m).
8. Connect the wire to the spark plug.
3. Air gap—0.030 inch
(0.76 mm)

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
Note: Improper adjustment can cause transmission
failure.
1. If the lawn mower does not self-propel or has a
tendency to creep forward when the control bar
is released, adjust the transmission cable on the
deck.
2. If the lawn mower does not self propel, rotate
the transmission cable nuts clockwise 1/2 turn
to tighten the belt.
3. If the lawn mower creeps forward, rotate the
transmission cable nuts 1/2 turn counterclockwise
to loosen the belt.
4. If the lawnmower does not drive up slopes, you
may need to increase belt tension. Repeat step 2.
1. Transmission cable nuts
Adjusting the Blade Brake
Cable
Service Interval: Every 100 hours
Adjust whenever a new blade brake cable assembly is
installed, new blade drive belt is installed, and/or the
cut quality is diminishing.
1. Stop the engine and wait for all moving parts to
stop.
2. Disconnect the wire from the spark plug.
3. Remove belt cover.
25
Maintenance
Figure 26