Rule changing in use of spark plugs!

Spark plug:
125 MicroMax
NGK GR8DI

125 Mini Max ,125 Junior Max, 125 Max and 125 DD2
NGK GR9DI or NGK GR8DI
Electrode gap: NGK GR8DI: Filler gauge 1,20 mm must not fit in between the two electrodes. NGK GR9DI: Filler gauge 1,00 mm must not fit in between the two electrodes.

 

DOWNLOAD BULLETIN NO. 5. HERE