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Engine basics => Four strokes only => Topic started by: Robert Zambelli on August 23, 2011, 01:22:50 PM

Title: SIG 4 Stroke Plug
Post by: Robert Zambelli on August 23, 2011, 01:22:50 PM

Does anyone know if this is a packaging mistake? Take a look at the SIG 4S plug pictured. To the left of it is a typical 4S plug, from my SAITO.
Notice the difference in the two, in particular, the slight protrusion on the plug on the left.
I looked for info on the SIG website but there was really nothing definitive.

So, opinions?

   Bob Z.

Title: Re: SIG 4 Stroke Plug
Post by: Tim Wescott on August 23, 2011, 01:49:41 PM

How old is the 'new' one?  Maybe Sig changed suppliers?  I doubt they make their own plugs.

Title: Re: SIG 4 Stroke Plug
Post by: Bob Reeves on August 23, 2011, 04:22:27 PM

That looks like a standard SIG plug, every 4 stroke plug I have seen (OS and Saito) looks like the one on the left. Can't see any reason to try something other than the OSF, they work and are available.