2001 Polaris Sportsman 500 6x6 Factory Service Manual

Does anyone know how to access the check engine codes on a 2018 450 sportsman. Just changed battery and spark plug . It runs fine but the light is on and I need this to plow snow and need it reliable. Any ideas . Thanks

Hi, I got a check engine light and a diagnostic code 520194 2 and i know it has something to do with throttle voltage out of range
I'd like to know if thats something that can be adjusted ? Or does anybody know what should i test  ?  I just bought this atv and I'm fixing it as its been in an accident. 
I also changed throttle leaver as original one was broken and I noticed inside the 4x4 selector assembly there are 2 contacts but I'm not sure if they're suppose to make contact at idle. I found some info online but some are saying they're suppose to touch and some say they're not. I think id depends of the year of the machine but I'm not sure. I'd really appreciate any help that i can get with this
Thanks 

I have a 2005 Sportsman 500, Instrument cluster will not illuminate, hi/lo beams work though.  Any tips or troubleshooting info is greatly appreciated!

I have a 2000 Polaris Sportsman 500. The Speedometer got water inside of it and it sat for a long time. So now that speedometer is trashed to say the least and i need to find a replacement. I don't want to put up the cash for an oem one so i was wondering if anyone knew any good speedometers out there i could use. I've found many speedometers i like but don't know how i'd wire it up without the same connection points. Thanks, any input is appreciated

whats up fellas....the white wire going from the throttle body came unplugged from the circuit  board and im not sure where it plugs back in to ? i see where the red wire goes but im not sure where the white wire goes...im not even sure what those wires do..any help would be appreciated..thanks. 1996 polaris sportsman 500 4x4 push button awd.