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OK so, I have a 2009 Sportsman EFI. Story goes it was owned by and older couple who only drove it around their yard. Unit had 1070 Miles when I bought it from a dealer. I put 200ish miles on it and it started missing around 4000rpm, but picks back up after, and has little to no hesitation on a hard launch. Changed the oil and noticed a ton of silver, Thought my motor was trashed. After performing a COLD leak-down test, I have confirmed the motor is still good. I don't think this thing was ever ridden hard enough to do a proper break in...I am hoping. Ive checked for a leak around the injector, nothing found. (Used ether to check for leaks) I did adjust the valves to .006 Intake and Exhaust. Checked the battery terminals, those were good. At this point Im thinking its an electronic issue. I have seen guys talk about T-bap issues? No idea what that is to be honest.

Any hits or tips or tricks to check would be helpful! Please let me know!!

I have a mechanical background this thing just has me stumped.

Howdy folks,

My Sportsman is still nearly new. Bought it new at the end of 2016 and have right at 50 hours and 91 miles on it.

Last weekend I was riding it around the property and parked it for about 10 minutes. When I went to start it up, I didn't hear the fuel pump pre-charge. The bike ran for about 5 seconds and wouldn't restart. I downloaded the service manual and proceeded with the checks. Everything indicated that it was the pump. Although I think the service manual is very vague when it comes to how many ohms it should read to be considered bad. Anyway I nearly fell over when I saw the price for a new Polaris pump ($400) so I found the quantum fuel systems pump kit much more reasonable ($69) and ordered it. I was pretty ticked off that the Bosch OEM pump failed at 50 hours but apparently I'm not alone. So I spent yesterday installing the new pump and regulator and took it for a test drive. From day one this bike has been cold natured. Starts right up, but unless it's been running for at least 3 minutes any throttle input causes it to pop back through the air cleaner. It is a slug until it gets up to temp. Yesterday was no exception but I will say that changing that pump alone increased the felt power considerably. It took off like a rocket and caught me off guard. I was very surprised at how much more power it made so I believe the OEM pump was weak from day one.


Are there any suggestions where to look to correct the cold starting issue? I am considering ordering the NGK plugs for it just for starters. I am also wondering about how fresh the fuel is since I've probably only refilled it about five times since I've owned it. I do use Starbright for the ethanol control and I add about 3 oz of Seafoam to every tank. The Starbright is what I use in my boat and motorcycle. They state that it will keep the fuel fresh for up to 3 years and I've never had any problems while using it.

I appreciate any suggestions.

Thanks!

hello all, looking for some assistance with a 2007 Hawkeye. the engine is running great, however the clutch shaft is not turning. i can manually turn it. in one direction it turns freely and in the other i can feel it turning the engine over. The other issue I'm having is that the nut to remove the clutch will not budge. i am going to borrow a 3/4 drive impact and see if that will get it off. Any ideas what is wrong with this machine and why it will not drive?

Thx.

Long time lurker here. I have two Polaris ATV's and have learned a lot from some of the posts here so I thought I would join and support the site.

Hey folks...

Two weekends ago I picked up a used 2015 Sportsman 850 SP EPS. I had been out of quads since about 2011 and had been missing it. I got into motorcycles in 2010, so at the time, I had lost interest in ATVs.

I've had a bunch of quads over the years, starting in 2002 with a Grizzly 660, a Rincon, Arctic Crap 400 (spelling intentional), 2005 Sportsman 800 and a 2009 Sportsman 850 XP EPS camo. Sadly I only kept that 850 for two years and put 400 miles on it before I sold it.

Since getting this new (to me) 850, I've put on new wheels and tires, a trunk, hand guards (I saved them from my last 850), fuel pack mounts, hand warmers and a GPS mount. I'm saving up for a winch and bumpers. Oh and I have a clutch kit coming this week.

I'm heading to Moab the week of Thanksgiving.. bringing my 2002 Grand Cherokee and the quad. Will do some trails in the Jeep, but probably most on the quad.

Pix are from Saturday in a local riding area called Bulldog Canyon.

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Hey guys I’m new to the forum. I wouldn’t say I’m a beginner on fixing four wheelers but this one has me having some trouble figuring it out. I just recently got a 2002 Polaris magnum 335. It drives great in forward and shifts from high to low just fine. But when I shift into reverse it shifts fine and works great but I’m hearing a tick/click. It sounds pretty bad going in reverse. I jacked up the rear end and you can’t hear the clicking when you have it running in reverse. I then killed the engine and with it still in reverse I rolled the tires backwards and you can hear the sound. I thought it was the axel but I’m hearing it in the gear box it seems like. It’s right in front of the driveshaft I believe. I bought new u joints for it and I was about to replace those but I don’t think that’s the sound either. Thoughts? It almost sounds like the gears are trying to engage with each other but slipping. I don’t understand this though since it drives in reverse just fine. Please help!!!

I just joined the forum. I recently purchased a 2014 Can Am Maverick 1000R XXC. I wish I would have bought one sooner. I look forward to learning about this machine. I have one quick question. What's the biggest tire I can put on it without a lift kit, and will I need to change the clutch?

I just joined the forum. I recently purchased a 2014 Can Am Maverick 1000R XXC. I wish I would have bought one sooner. I look forward to learning about this machine. I have one quick question. What's the biggest tire I can put on it without a lift kit, and will I need to change the clutch?

I have a 2014 Pioneer Ace325 It'll start up idle when I take off about 50 yd it dies can started backup it'll do the same thing over and over any thoughts thanks