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Old November 11th, 2008, 08:00 AM   #1
jeffandjess4806
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Just picked an older sportsman 400

I just got, seems to run pretty good wife likes it. 4x4 works what should i look for or do to it? any upgrades or mantinace i need to do? I will post pic soon
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Old November 11th, 2008, 08:08 AM   #2
rentalrider
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Year? Older as in the 400 liquid cooled 2-stroke or newer 4-stroke? The 2-stroke (my assumption) is a great motor imo... I've rebuilt a couple. First thing I would look for is oil in the counterbalance reservoir. It sets back side of engine, just in front of divorced transmission... they have a tendency to run dry and will cause a complete engine failure. That's how I got the exposure to the engine's insides! :) Otherwise, pretty bullet proof, strong motor. Make sure air filter is pretty clear or you will foul plugs like diapers in that motor. Enjoy and if you ever need parts, I might have something laying around. BTW, if it's the 4-stroke, I have no idea... never got experience with that one.
OH, forgot, make sure the boots on the strut front hubs are not torn. They will eat a cv joint if dirt gets in there. Easy enough to replace (boot) if they're torn, but not once they've ruined the joint.
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Old November 11th, 2008, 08:15 AM   #3
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My bad it's 1996 400 4x4 2-stroke
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Old November 11th, 2008, 09:05 AM   #4
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That's the one! (same year as mine, too) You should have good luck with it, but I really would check that counterbalancer reservoir. It should have a grey cap, grips on the outside, the diameter of a dime and I believe a screwdriver head at top. 30 sec could save $1200.
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Old November 11th, 2008, 09:25 AM   #5
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What kind of oil do i put in there if it's low? I need a speedo for it and a headlight bulb. Prolly pick up some oil and a air filter. about how fast are these? I have no speedo so i dont know

Here is a crap pic of it, that was in the ad when i got it

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Old November 11th, 2008, 10:33 AM   #6
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Looks like i need a Carb boot if you have one?
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Old November 11th, 2008, 09:51 PM   #7
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Carb boot... you mean the connection between carb and reed set? (as goes into motor) Or between airbox and carb. I have one that is all chewed up, but ordered a fresh one (how I got the extra) from bikebandit.com. They can sometimes be a little pricey, but it's hard to find those little parts otherwise. For the speedo, I found a replacement for mine on e-bay. May just be the cable to back of speedo, though. So I'd check that before ordering a replacement. You'll find a new one (oem) is pretty pricey. Mine will do about 48mph. I have the auto oiler turned up as high as it can go, so running pretty rich. They're zippy and will pull from my grizzly 660 from a stand-still. Won't get passed for the first 100ft or so. Wheel spinners, too. However mine is the xplorer version. That year was exact same except solid rear axle so the tires are more "ballooned" and might be why it wants to spin so well. Also, the headlights. There's a connector in headlight pod which is ground for the lights (both sets if I remember correctly). Before ordering a new bulb, make sure that just didn't come loose. The shop would never tell you that, but I've seen several polaris have this for the reason of their "burnt out lights". Make sure, too that the oil reservoir is getting lower as you ride. ie that it's using oil appropriately. I run polaris 2-stroke oil religiously in that bike.
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Old November 12th, 2008, 06:17 AM   #8
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The Air box side is in bad shape, The dealer told me $23 for it. Also I dont have a speedo at all it got removed along the way???? So i will watch Ebay for one. I greesed all the fitting last night checked the oil's Trans needs changed bad, counter was low I put some in. Checked the CV boots looked good

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