Rusty30

Russell Walker wrote:

That's Roger I think it's the right way to go with the spark plugs, In fact I was looking for a long life spark plugs to suit the 912s

If you're going with the NGKs, you're normally replacing them every 200 hours, and they only cost a bit over $3 apiece, so say $25 for all eight.  On my machine that's about the same price as two hours worth of fuel...