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By Preston Latray
I just sold my mildly built blaster and am about to buy an 84 atc250r I'd like it to be a modded banshee killer. I already plan on a port and polish and possibly a head shave. It's going to pretty much be a full drag build. I'd like it to stay stock bore but I can change it if necessary. What parts should I plan on ordering to get the most bang for my buck. I can do all the work myself so that should cut costs quite a bit. (hopefully)
By Christopher Middleton
I was given a "Go-Kart" its an old Carter brothers dlx150 but the engine is not the same that came with this Kart. I am trying to ID it so i can look at getting some parts for it. the pictures attached are of the motor and the only ID marks on it. I am thinking its some sort of 200cc from the 1980's does anyone have a better Idea? I am really trying to get a rebuild kit for the carburetor. on the carburetor is Keihin 63 AA YKT
By Kevin Ciccone
Hey, how's it going?
I'm a new member looking to get some advice before I go to check out a '14 Sportsman 800. I wanted to get input from you guys that have experience with Polaris machines. I've been riding my whole life, dirt bikes and atvs... Honda, Suzuki, Yamaha, but never Polaris. I'm looking for advice on what I should be looking for, any common issues, really any general advice. I couldn't find many reviews of the Sportsman 800 online, so and general reviews on quality/reliability would be great too.
A little info on the machine.
-2014 800 EFI
-640 miles, 77hrs.
-Asking price is $5500
Couple add ons: (nothing major)
-Aftermarket wheels with Maxxis tires
-Front and rear brush bumpers
Probably going to see it in the next couple days. I'll make sure to check out all the basics... Fluids, front end, tires, suspension etc. Plus anything else you guys recommend.
Thanks for any advice on advance!
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Problem: The ATV starts and runs at idle perfectly. But as soon as I open the throttle, the engine starts to slow down until it stops. On the attached video you can hear the sound of how it works: see video below
Prehistory: there is a Polaris Sportsman 500 1998, which for about 1.5 years stood in repair, including also replacing CDI with one taken from the same ATV. Finally, the vehicles were on wheels, traveled several kilometers and overheated - forgot to fill the antifreeze Came back home in small moves. The next trip started well, but after 10 km there was a feeling of a small drop in power (even as the vehicle got warm completely) but still drives. Next trip - the situation is repeated. The next test of ATV through time and a huge loss of power from the very beginning. The engine sneezes, does not want to go more than 5 mph.
What has been done: the carburetor has been replaced with a new one (inexpensive, $ 40), a new spark plug, a new ignition coil, the engine head has been removed, the piston is in good condition, valves were corrected - but the problem was definitely not in them.
Ignition control unit is suspected. Who faced similar? Please help in solving the problem.
Thanks in advance.
in this thread, I want to discuss how 4-cycle atv engines work- what the different types are... how they are set up and which you prefer. To start off, are the cams on ALL atv 4-strokes powered by a cam chain? I know that on say a lawn mower or logsplitter engine, the cam is turned by the tappet, pushrods, and valve rockers. Which is better and why? Chain-driven cams or pushrod-driven cams? Are the pushrods just an old version and everything is transforming to chains or the other way around...or not at all? Just looking for some explanation, history, and downsides/upsides...
By Arctic Snowdog
I have a small Sled Dog business and I train up to 14 Huskies pulling a Yamaha Grizzly 550, that is quite a lot of Horse (Dog) power. Sometimes in order to make the ride smoother for Dogs and us we ride in Neutral but on a few occasions I have noticed that the right hand (front) brake seems to loose pressure and does not brake at all. Is there a particular reason for this ? Is it a fault or is it something to do with us riding in neutral, I only use the ATV in this way a few months a year before the snow comes but I am sure I recall the same thing happening last season.
Any ideas would be greatly appreciated because I am a far way from being a mechanic.....
Have a super day and thank you all.
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