I fixed mine today.
It was just a cable adjustment.
If you havent tried it, check it out.
Give the silver cable adjuster on the clutch perch a few turns out and see if that works.
Make sure you are adjusting the brake cable and not the clutch cable.

 

something I have always used for a parking brake, not somehting you truely want to count on, but you never really want to count on a parking break anyway.

On the right front handle bar, on the inside og the grip, I have always kept a big a** thinck and short rubber band, when I need a parking break, I pull the rubber band off and squeeze the break handle and then slip the rubber band on it.
im sure im not the first ot use this but it works great.

 

Actually, i had thought about that with the old Blaster, because its the same way. But the Z has a really tight brake lever, it would probably snap the band. Im gunna try using a velcro strap from an old glove. By the way TahoeRider, i tried turning the silver things and it didnt work. So i think im just gunna use the velcro.

 

Screw the P-Brake, just leave your quad in gear. I got rid of my brake and I park on hills all the time.

 

ya its cable adjustment it acan be done on the lever or the actual brake mechanism