I'll try this thank you

 

I checked this and there is no corrosion at all but I notice are the cv shaft in the front supposed to have play

 

All of them have some play after a while.

 

Ok just checking it has play were it goes in the diff is that normal too

 

There will be some play from the output hubs in the front diff. If really excessive,then the output hubs may need to be replaced.Items#2 and 5.

 

Do you know what part of the device manila it tell you how to take out the front diff

 

Here's a Rzr front diff removal. Procedure is pretty well the same on removal except on a lot of models you may also have to pull the radiator back to have enough room to get it out. There are short cuts that people have taken and just dropped a-arms and tie rods and pulled struts out far enough to remove drive shafts from the diff.

 

Ok so I have the diff out took the cover off everything is entact the plate the sprague cage is good is there anyway I can bench test it I'm lost

 

Pull the roll cage out and inspect close for any small cracks on the cage. I'd still replace this cage with an aluminum one and be done with it. Also replace the armature plate and case seals. If the output shafts,bearings,etc still look ok you can reuse them,but check carefully. If in doubt on the coil itself,check the ohms reading between the hot wire and ground wire.Should be between 22.8-25.2 ohms.If reading exceeds this,possibly time to replace the coil plate.Polaris Sportsman 450 500 700 800 ALUMINUM Front Differential Roll Cage Sprague | eBay

 

I took the front end to my dealer he said the cage roller are rough and so if the part they ride on I think it's the hub is pretty sought he said it other then that it looks good I'm just trying to find the best deal he said through polaris it's bout 400