Toro 58630, Operator'S Manual

Page: 18 / 77

Servicing the Spark Plug
Service Interval: Every 20 hours—Check, clean, and
gap the spark plug.
Yearly—Replace the spark plug.
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: Torch L7RTC, Champion RCJ8Y, or equivalent
Air gap: 0.71 mm (0.028 inch)
Removing the Spark Plug
1. Disconnect the spark-plug wire from the spark
plug.
g356809
Figure 9
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 0.71 mm (0.028 inch).
g027479
Figure 10
Installing the Spark Plug
1. Thread the spark plug clockwise into the
spark-plug hole by hand.
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:
A loose spark plug may cause
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.
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