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2009 Sportsman 400 HO air box ???

i bought a non running sportsman 400 HO. The guy i purchased it from tried making repairs but just made a mess of it. I cleaned the carb, new plug, new engine harness and new cdi. The quad will start and idle but will not take any throttle without cutting out. It is missing the air box as he lost it so i know that most of my running issues as these carbs rely on good vacuum and some air restriction. My problem is i can not find a airbox for 2008 to 2010 400 anywhere, other than buying every single part OEM which is crazy expensive. Im sure i could just throw a cone filter on there with a jet kit but id rather have the air box for the obvious reasons. Do any of you know what model air box that would be similar enough to make it work with modifications, i have seen several early 2000s sportmans 500 listed on ebay for 50 bux that look similar and i am tempted to try that, any thoughts or suggestions would be greatly appreciated.
Thanks:grin
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Found some dripping

Just saw some leakage and saw it was coming from here...feels like oil maybe? Just need a new gasket?

Was hoping to ride tomorrow, ok to fix after?

Any and all information appreciated.

Sent from my Pixel 2 XL using Tapatalk
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Sportsman 450 runs terrible

Hello Polaris enthusiasts,

I am new to this forum but look forward to years of dialog with everyone.

I bought a 2006 Sportsman 450 4X4 ATV, automatic transmission, a couple years ago with only 625 miles on it and it seemed to be quite a nice machine. It barely has 750 miles on it now. Please forgive my ignorance if I am listing things that are obvious to some of you since I'm not familiar with all of the models; at least not yet. For all I know, all Sportsman 450s are 4x4s.

Anyway, I didn't notice at first because it seemed to run fine when I got on it and just drove but I realized a couple months later that when under any kind of load, other than just cruising, that it seemed to have no power. For example, when my lady and I were moseying down to my deer stand to drop off some apples it seemed to be unable to back up the most insignificant slope when we were both on it and we are average sized people, 180 and 140 pounds or so. It seemed like a carburetor issue in my mind. Then a few weeks later we were trying to drag some rather small logs (or large posts) around and it just had no power. It also seemed to idle just a little to low and would stall in a few moments if I didn't tend the throttle to prevent it.

I have looked online a bit and it seems like there is no real adjustment to the carb jets other than the idle screw. I tried to tweet that but now the things runs absolutely horrible at real slow speeds and I wonder if I just need to clean the carb, rebuild it, or whatever. It backfires, won't idle on its own, and when trying to go at idle speed it just gets jerky by touching the throttle a little, so I let up and it stops, touch the throttle and it jerks to fast, let up, it stops, etc.. It almost seems comical. The plugs seem fine. The fuel has been replaced.

How hard is it to remove and clean or rebuild the carb or does it sound like something else. I'm told that there are no jet adjustments and they are factory sized with no adjustment. Any suggestions?

Bushwhacker
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2000 scrambler 500 4×4

I recently replaced my piston ring along with my valves compression springs, oil seals over the guides and valve keepers and all gaskets we're replaced because of an issue with blue smoke out the exhaust. I went by the book during this repair, did everything required. It now runs perfectly with a good steady idle and it climbs rpms no problem and the blue smoke is gone:D .......BUT lol I'm noticing some white smoke coming out of the exhaust now only after running for a couple minutes, not a lot but It gradually gets worse. I'm thinking that Im burning fuel. But what I don't know is if Im just burning all of the oil I used while assembling and what not. Or if I'm not burning all the fuel being injected. The weird thing is that the white smoke is coming out right at the tip of the exhaust manifold even with the rest of the exhaust system assembled. Which leads me to believe that I've got fuel going up the exhaust guides while they're open and is burning up immediately when it hits the hot manifold. I avoided a pretty huge repair bill doing this job myself and I took my time and babied the damn process. Lol I guess I'm just wondering how many people think it's completely normal for crap to burn up after a rebuild and I need to give it time or that my fuel isn't being properly burnt up for whatever reason.
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Polaris 90 dies at idle, bogs down under throttle

I've got a 2004 Polaris 90 I got cheap and am trying to rehabilitate for my kids. When I first got it, it would only run with the choke on. I pulled the spark plug which was black but in surprisingly good shape. The air filter was also in pretty good shape. Pulled the carb and it looks brand new. Cleaned it out anyway, made sure the jets were clear, etc., Put on a new fuel line between the petcock and tank, and the gas seems to flow freely.

Put everything back together, kicked it over, and it started right up without the choke on. Started to give it gas and it died immediately. Started it again and it idled ok, but died when I tried to give it gas.

Adjusted the air screw (so many times I forget which setting I was on) and got it to where the engine would idle, and I could apply gas and take off. Under heavy throttle it was bogging down (too lean or too rich I can't tell), but when I brought it back to idle it would die.

Tried adjusting the throttle slide stop screw and nothing really happened, except once or twice when a slight adjustment coincided with the engine dying.

Starting to chase my tail here. I'd really appreciate any insight as would my kids!
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2007 Sportsman 500 Studs

Hello everyone,

Ordered a set of MSA Diesel wheels and 27" Mega mayhem tires, the machine originally had steel wheels on it, so I found out the factory wheel studs aren't long enough, so I ordered part #7518378 that are suppose to be Polaris studs for aluminum wheels, well they still aren't long enough?

Is there something I am missing? is there a longer stud yet I need to get?

I ordered everything thing from Rocky Mountain ATV and even they said I had the right wheels, lug nuts and I ordered the right new studs?

If anyone can help please let me know right now I have a set of new wheels and tires I cant mount.

Thanks!
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Whip mount on gade?

Any of you guys run whip flags?
If so, where are you mounting them?
If I get a Wildboar rear rack, I could mount it there but I’m having a hard time finding a bracket that fits a square tube.
Any suggestions?