Installing The Spark Plugs; Checking The Spark Plugs - Toro 30092 Operator's Manual

1. Spark-plug wire/spark plug
4. Clean around the spark plugs to prevent dirt from
falling into the engine and potentially causing
damage.
5. Remove the spark plugs and the metal washers.

Checking the Spark Plugs

1. Look at the center of the spark plugs (Figure 32).
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means that the air cleaner is dirty.
2. If needed, clean the spark plug with a wire brush to
remove carbon deposits.
1. Center electrode insulator
2. Side electrode
Figure 31
Figure 32
3. Air gap (not to scale)
Important: Always replace the spark plugs
when it has worn electrodes, an oily film on it,
or has cracks in the porcelain.
3. Check the gap between the center and side electrodes
(Figure 32). Bend the side electrode (Figure 32) if
the gap is not correct.

Installing the Spark Plugs

1. Install the spark plugs and the metal washer. Ensure
that the air gap is set correctly.
2. Tighten the spark plugs to 16 ft-lb (22 N⋅m).
3. Connect the wires to the spark plugs (Figure 32).
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