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9.
Apply thread-sealing compound to the threads
of the plug.
10.
Install and tighten the plug until it is secure, and
return the machine to an upright, level position.
Note:
The oil level in the sight glass of the plug
should be 3/4 full
Figure 20
(Figure
20).
Servicing the Spark Plug
Service Interval: Every 100 hours—Inspect and
Every 200 hours—Replace the spark plug.
Use an NGK BPR6ES spark plug or equivalent.
1.
Set the Dyna-Clutch lever to the S
shut off the engine, and wait for all moving parts
to stop.
2.
Disconnect the wire from the spark plug.
3.
Clean around the spark plug.
4.
Remove the spark plug from the cylinder head.
Important:
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 0.76 mm (0.030 inch);
refer to
Figure
g021590
1. Side electrode
2. Center electrode
6.
Carefully install the spark plug by hand (to avoid
cross threading) until it is hand tight.
7.
Tighten the spark plug an additional 1/2 turn if
it is new; otherwise, tighten it an additional 1/8
to 1/4 turn.
Important:
very hot and can damage the engine;
overtightening a spark plug may damage the
threads in the cylinder head.
8.
Connect the wire to the spark plug.
18
adjust the spark plug; replace it if
necessary.
TOP
Replace a cracked, fouled, or
21.
Figure 21
3. Insulator
4. 0.76 mm (0.030 inch) gap
A loose spark plug can become
position,
g019300
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