Lube the bearings,plates,roll cage and bearings.Plates alone won't help without everything else working properly!! Download the manual link I posted that shows all things to check for along with looking at this video again to get a general idea.Plus the hub nuts can't be torqued more than 12 foot pounds.

 

all right i greased them before i put them back in there to thought i should add that so i dont own a torque wrench i will pick one up i will update u when its done i will take some pics to

 

update awd is working now i did what it said in the video and it started working only thing is my drive shaft still spins and my cv axle spin thats normal right but wheels dont in off and when its put to on the awd switch they start spining thank u for all ur help old polaris tech

 

Yes the drive shafts will turn whether in awd or two wheel drive.When the front hubs don't lock up(in two wheel drive or in awd and rear wheel aren't spinning) the drive shafts turn at the same speed as the front tires.

 

All right all fixed then thank u for ur help time to go riding

 

Been a while since post. Got rid of the other 08 -300 sportsman .Did keep the one I bought new . Am starting to think the 300 is **** . The bike has 1200 miles on it .First started to have problems due to small crap in fuel tank so replaced with new carb . But was riding in Sierras at 3000 ft and wont go above 12-15 MPH or looses power when climbing any hill . Put some high test - 91 oct. in the girl . Have a friend who rides with me on same dusty roads with a Suzuki 250 and never takes care of the bike . Never once has had a problem . Starting to think these are crap bikes . My 500 fuel injection has never had a problem -even after rolling over . After seeing this on 2 bikes so far that I have had -am convinced maybe there is a problem with the Polaris carb bikes . Am in a club there there are many retirees who ride the same canyons with different brands bikes ..The Polaris 300 is a picky bitch .Any help will be good .

 

These were an entry level imported atvs that kinda filled the notch between kids machines and the full size models.Some had problems,others didn't,just like any other atv model or brand. First off it doesn't need 91 octane. 87-89 is good enough.Problem may or may not be fuel/carb related as to no power,but could simply be clutch related.Could be the centrifugal engine clutch slipping.Dirt Cheap Yamaha & Polaris OEM Parts & Accessories – Cycle Parts Warehouse OR could even be a belt or primary or secondary clutch problem.
Dirt Cheap Yamaha & Polaris OEM Parts & Accessories – Cycle Parts Warehouse Plus a service manual can help you narrow it down rather than gripe about it.2008 Polaris Sportsman 300 Service Manual PDF Download

 

Have the factory Manuel. Will look into the other issues .