Best spark plug

[Nicholas Guy]

For my 125 6b . Have been Elima ting any possible problem as to why I quit getting spark . What is the preferred spark plug size and gap setting ? Thanks !

[KJDonovan]

Nick,

Bosch W3AC or W3AS  gaped at .022".  If you can't find a Bosch, NGK B7HS same gap.

Thanks,

Kevin

Kevin J. Donovan
Foster, Rhode Island
72 Jack Piner
72 Six Day
74 Hare Scrambler

[LeeBuff]

Hi Nick,
 
  I have always used Champion L-78 plugs in both my Sachs 100 / 125 Pentons and never had problems.  Lee

[Larry Perkins]

I am and always have been NGK all the way!

B7HS for woods and B8HS for Moto.

Larry P

[Steve Minor]

You work out your non-spark issue? I always check the simple stuff first like making sure I have a good ground and the kill button isn't faulty. Then move on to other possibilities.

Steve Minor

[Kip Kern]

W3-AC Bosch or W3-AS Bosch (racing)

[clayman]

Kip,

What about the 74.5 250 HS, a B8HS? There was a B9HS in it when I bought the bike.

Clay

[Kip Kern]

Clay
The Bosch plugs mentioned fit all Sachs 100/125 and KTM 125-400 engines.  Rock Auto is a good place to source.  .022 gap