Re: O-Ring replacement for the needle packing washers?

[lotec]

I’ve tried neoprene and viton o-rings as the packing and had difficulty getting the gland nut tension so its tight enough it won’t rattle off, too tight the needle won’t turn. Plus our wonderful ethanol gas eats up the high-speed ones in no time. The fiber ones in the OE kit work fine, but I do find they swell with use/shrink with dis-use. (Every spring the knobs twirl on first start up – 10 minutes later they are nice and stiff) The old manuals suggested soaking them in kero before installation so you can get the gland nut tension correct from the get-go.

I echo the comments above – always replace them where needed when a new motor comes to me, the old ones are almost always guaranteed to fail. It’s just one small fix, not doing it can lead to some funky running conditions.