Spark Plug - Yamaha MAJESTY YP250 Owner's Manual

1. Spark plug cap

Spark plug

Removal
1. Remove the spark plug cap.
PERIODIC MAINTENANCE AND MINOR REPAIR
1
1. Spark plug wrench
EAU01833
2. Use the spark plug wrench in the
tool kit to remove the spark plug
as shown.
Inspection
The spark plug is an important
engine component and is easy to
inspect. The condition of the spark
plug can indicate the condition of the
engine.
1
The ideal color on the white insulator
around the center electrode is a
medium-to-light tan color for a scoot-
er that is being ridden normally.
Do not attempt to diagnose such
problems yourself. Instead, take the
scooter to a Yamaha dealer. You
should
inspect the spark plug because heat
and deposits will cause any spark
plug to slowly break down and erode.
If electrode erosion becomes exces-
sive, or if carbon and other deposits
are excessive, you should replace
the spark plug with the specified plug.
6-10
periodically remove
Specified spark plug:
DR8EA (NGK)
1
2
3
4
5
and
6
7
8
9