Polaris 500 -- no brakes

[DrRod]

I have a 2005 Polaris Sportsman 500 that suddenly lost its brakes -- all of them at once, so I doubt its pads or the like. Any thoughts or suggestions?

 

[Williy]

is the master brake cylinder full or empty? are the brake lines
intack or broken?

willy

 

[Zebrafive]

I agree with willy, check the easy things first. Start with Master Cylinder. If empty, look for broken line, leaking caliper. If full look for kinked line, or failed master cylinder.
I doubt a caliper problem unless it's leaking.