Grizzly Engine & Transmission Shim question July 7, 2015 I’m in the middle of adding 1.5mm shim as I type. I have splines sticking out but was wondering about the washer on the primary sheave. It doesn’t sit on the splines like before. Do I need the washer or not? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related