Checking The Spark Plug - Yamaha VERSITY 300 VP300 Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
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1. Panel E
2. Screw
To install the panel
Place the panel in the original position,
and then install the screw.
6
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Checking the spark plug

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The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Remove cowling B. (See page
6-6.)
2. Remove the spark plug cap.
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1. Spark plug cap
EAU19630 3. Remove the spark plug as shown,
1. Spark plug wrench
To check the spark plug
1. Check that the porcelain insulator
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NOTE:
If the spark plug shows a distinctly dif-
ferent color, the engine could be defec-
tive. Do not attempt to diagnose such
problems yourself. Instead, have a
Yamaha dealer check the vehicle.
6-9
with the spark plug wrench includ-
ed in the owner's tool kit.
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around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
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