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Hey there, i have recently put a new drive belt on my 11 Polaris Sportsman 500 H.O. It has 44 miles since putting the new belt on and should be nearly broken in as i hear it takes 50 miles to do so? Anyhow it has had a little trouble with slipping since i put the new one on a few months ago. Now whenver i go down a hill the belt seems to be getting caught in one clutch if not both and then it has to run a high rpm just to go a low speed. Today it did that again going down hill, i stopped, put it in neutral and when going back up the hill i had to turn it off, put it in neutral, let it roll back down the hill a little, then restart it, low range and it was slipping but thankfully i was able to make it up the hill.
So what might the problem be? Is this a need for another new belt? New clutches and belt? Or just get something else? BTW the brand new belt i put on it, is a factory one, an exact replacement for the original.
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...
Hi all, I was gifted this Bayou but she's been sitting quite some time. It won't crank using the factory start button but when I jumper the starter solenoid it cranks but there is no spark. The key has power coming in on the white wire and when turned on supplies power to the brown wire coming out.
I guess I should start with testing the pickup? I heard I may be able to jumper the wires coming from the pickup with an LED bulb and it will flash? I noticed in the manual that it should have around 110 ohms resistance so I'll check that as well. One thing I noticed was that the starter circuit relay has power on one of the black wires with the key on- this doesn't seem normal as I'm assuming the black wires are grounds? I think one of them comes from the start switch, travels through the starter circuit relay and then grounds the starter relay?
Mine is a 1991 so it has the 7 wire CDI (ignitor) and a 2 yellow wire alternator ( as opposed to the later 3 wire type ) with another 2 wires for the source coils (black & red wires ). The pickup wires are blue and black I do believe. Any help appreciated and yes I will test the pickup ASAP.
I'm trying to understand how the system works and I don't understand what the yellow / red wire from the kill switch does- I assume it gets grounded when the kill switch is "on" and therefore grounds the CDI so it can't activate the ignition coil? I noticed in the diagram that that yellow / red wire looks like it may be grounded by the ignition key switch when in the "off" position?
I also don't have 12v power at any of the wires going into the CDI- doesn't the CDI need to be powered? I also read on this forum that someone used a GM HEI module in place of the factory CDI just to test it for spark- does anyone have any info on that?
I hope I'm not missing something simple!
Here is a link to the diagram for my bike (which was posted by another user): https://www.quadcrazy.com/atvforum/topic/13742-1988-bayou-220-lost-spark/?tab=comments#comment-101193
Any help appreciated!
By colin james
View File 2017-2019 sportsman 450/570 with eps factory service manual
This is the factory service manual for the 2017-2019 factory service manual for the sportsman 450/570 with electronic power steering
Submitter colin james Submitted 09/06/2018 Category Polaris ATV
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