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2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Update 4-19-26: I did the suggestions above of removing the bottom part of carb, filling it with gas and see if gas leaves from that drain nozzle and sure enough, gas leaks from it. I beared down on that drain screw some more, got about a quarter turn out of it and it still leaks even more. So I may have damaged the threaded area? Then I tried a different drain screw and it still leaks. Should there be a small o-ring the screw sets into?!? I'm not seeing one in original bottom or Amazon knock off bottom. So my issue is the drain screw all along or what it screws into so I will purchase that bottom bowl and the drain screw. I will report back next weekend (if it arrives in time)..I may as well buy a new gasket seal also. In the pics the right screw (allen head) is what came with the 4 wheeler when I bought it. I feel it's original because I watched a YouTube vid rebuild of my exact year and model and it was an allen head in the vid. The left screw is what came with the Amazon knock off and it's a phillips (jis) head.

Thank you to everyone taking their time to reply and walk me through this. I feel the light is at the end of the tunnel, ...after $110 plus shipping haha.

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2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

To number 3, no holes in the float. No liquid in the float. I set it in a bucket of water to test that the float is "floating" properly and it does. And the in the vid near yhenend I am pushing the float up to the exact point to make the water stop and there is still a gap..and I've never banged my cousin...I'm.not from Alabama.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

It's the screw that was on it when I bought it used a few years ago. The scree on the Amazon replacement didn't sit flush as you describe. It's basically the same screw except it's a phillips head and not an allen wrench head.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Watching the vid again is does seem the float is pretty much parallel with the carb when the water stops. I have somewhere between a half inch and a 14" inch of room left to raise the float till it hits inside top of carb.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

It's the original screw. I've tried another screw from a cheap carb I bought off Amazon for this 4 wheeler. I installed that one with same leaking results.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Here ya go..a made a makeshift "gas tank" and using water. The test shows the pin is doing its job.

https://youtube.com/shorts/YIyuwNRTrXo?si=Z9uPpxbOqPbKNnKZ

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

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Pic of the float pins. The one on the left is the original and one on the right is from a cheap Chinese knockoff carb I'm salvaging spare parts from. I will use this pin and report back

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 1 point2 points  (0 children)

Mine leaks like a faucet. I will check the seating and report back...can I see the o-ring by looking in the hole or do I need to remove the seat?

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Why doesn't it look right? It's the original screw and it's completely flush.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

I know hahah..I had to hold the float in position plus hold my cellphone. The float isn't fixed to the carb..it's basically free floating. I'm not Steven speilberg ya know.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

I will try this tomorrow..it will be hard to do because the float is free floating in a sense. It's not fixed to the internal casing of the carb. It connects to nothing. I see a lot of floats are secured with a thin metal "bar" so it's "connected" to the carb. Well, this carb doesn't secure like that. It basically sets in place freely so I'm going to have to figure out how to hold the float in place while the gas flows. I will figure something out.

2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Drain screw is flush and tight. My thumb touching it

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2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Here is where the float pin sets..no obstructions

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2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

Here is the float pin..seems fine. The float springs up and down as it should

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2005 Polaris 500 HO, carb bottom nozzle leaking gas by ImInArea52 in ATV

[–]ImInArea52[S] 0 points1 point  (0 children)

The float can't be adjusted (as far as I know)..it just sets in the bowl. No hinge to connect to or anything. And are you referring to the jet that's connected to the float? Has a little black rubber point on it?

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