Power jet o ring

[raiderfan]

Working on the new to me 80' Liquifire, have the carbs apart and I'm unfimiliar with the power jet carbs. Is the o ring at the bottom suppose to fit " snug" in the bowl? I am assuming so, and what I have on both carbs now is just the remains of the old.

[nick80lf]

Should be somewhat snug. If they leak it would be like having a larger main jet and get too much fuel.

I replace mine whenever I crack the bowl off. I also like to lube the o-ring with 2 cycle oil before putting the bowl back on.

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[raiderfan]

Thank you, that's what I figured.

[rminier]

Those o rings are very important to a good running sled....don't ignore them.
Newbreedparts is a site sponsor on here, and they have them for a couple bucks.
Polaris dealers can still get them....many of the early Indys used Power Jet carbs, like the mid eighties Indy 400s
Power jet carbs will work wonderfully, but they have that o-ring which was not used in the more "plain jane" mikunis.
Some of our sleds may have sat in a barn for 20 years, and a little water in the gas settled to the bottom of the float bowl....where it may have caused some corrosion right where that o-ring needs to seal up perfectly.
Here is a trick to provide a "secondary seal"....install a second o-ring above the stock one. I can't remember the size, unfortunately. You would have to go to a good hardware or auto store and find the correct size. This second o-ring mashes down against the top of the well in the float bowl. It is not a replacement for the correct o-ring, but it can provide back up if the stock one ever leaks by.
I actually experimented with my '79 Invader just running briefly with only the "secondary" o-ring in place, and it ran perfectly. NOT recommended, but for a couple of bucks, it ensures a perfect seal.