Spark Plug - Yamaha RD250 Owner's Manual

Spark plug
Cleaning and gap adjustment: Clean the
electrodes and adjust the gap every 500 ~
1,000 miles (1,000 ~ 1,500 km).
Checking the condition of the spark
plug: If the spark plug is correct, the
insulator will be relatively clean and have
a tan color. If the plug is sooty, it should
be replaced with a hotter type. If white,
replace it with a colder type.
N G K Champion
Hot type
Type chaud
Heißer T y p
B-8HS
L 4 5
L62R
Hot type
Type chaud
Heißer T y p
Export-except specific area
Zone specif ique non soumise ä
lexportation
Export, ausgenommen besonders
angegebene Gebiete
B-9HS
IL4JI
L57R
- 3 8 -
Spark plug conversion chart
Tableau de conversion des bougies
Zündkerzenvergleichstabelle