Checking The Spark Plug - Yamaha YBR125 Custom Owner's Manual

2. While pushing the panel inward,
turn the key counterclockwise to
the original position, remove it, and
then close the panel lock cover.
Panel B
To remove the panel
1. Remove the screw.
1
1. Screw
2. Pull the front of the panel out, and
then slide the panel forward to re-
lease it in the rear.
PERIODIC MAINTENANCE AND MINOR REPAIR
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To install the panel
1. Secure the rear of the panel, and
then push the front of the panel in.
2. Install the screw.

Checking the spark plug

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 the spark plug cap.
1. Spark plug cap
2. Remove the spark plug as shown,
6-7
1 1
with the spark plug wrench includ-
ed in the owner's tool kit.
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