I have a '00 big bear and am having a hard time finding a diagram that shows the inside of front master cylinder.Inside my master cylinder there is a rubber ring with a x cut in it, is it suppose to fit in the grove in the bottom of the housing or on top of it. And there is a washer in that grove laying over the two holes in the bottom.Is that where it is suppose to be, I have lost all compression in my front brakes.

 

Go to ronnie,s online parts than to oem parts than your atv [yamaha yfm400] is parts brake down you also can order from these guys are great....