I have an 06 Yamaha wolverine 450 4x4...I've completely redid the entire front end and now beginning on the rear...does anybody know how to get the brake rotor off the rear...I've tried pullers,heat,hammer...I can't get it to break free

 

I'm assuming you mean the hub for the brake disc, if so, from the drawing it looks like the LH hub comes off first, then the brake hub is behind it on the same spline? So it should just slide off in the same way. I have had drums that are awful tight on Hondas, but you could take the whole shaft off, including drum, and press the drum off afterwards, not an option here, unless you put the whole rear end in a press. Either easing oil and a big hydraulic puller, or heat and the puller, would be my preferred way of tackling this job. Looks like the part is no longer available either, so whatever you do, don't break it.