Servicing The Spark Plug - Toro 58604 Operator's Manual

Servicing the Spark Plug

Service Interval: Every 50 hours
Ensure that the air gap between the center and side
electrodes is correct before installing the spark plug.
Use a spark plug wrench for removing and installing
the spark plug(s) and a gapping tool/feeler gauge to
check and adjust the air gap. Install a new spark
plug(s) if necessary.
Type: LG E5RTC
Air gap: 0.75 mm (0.03 inch)
Removing the Spark Plug
1. Disconnect the spark-plug wire from the spark
plug.
Figure 32
1. Spark-plug wire
2. Clean around the spark plugs to prevent dirt
from entering the engine and potentially causing
damage.
3. Remove the spark plug.
Checking the Spark Plug
Important:
Do not clean the spark plug(s).
Always replace the spark plug(s) when it has a
black coating, worn electrodes, an oily film, or
cracks.
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means the air cleaner is dirty.
Set the gap to 0.75 mm (0.03 inch).
Installing the Spark Plug
1. Thread the spark plug clockwise into the
spark-plug hole by hand.
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2. Rotate the spark plug clockwise using a
spark-plug wrench until the plug and sealing
washer are seated.
3. Tighten the spark plug as follows:
•
When installing the original spark plug,
tighten the plug an additional 1/2 turn.
•
When installing a new spark plug, tighten the
plug an additional 1/8 to 1/4 turn.
Important:
the cylinder to overheat. An over-tight spark
plug may damage the threads in the cylinder
head.
4. Connect the spark-plug wire to the spark plug.
21
Figure 33
A loose spark plug may cause
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