Valve Adjusting Plates a.k.a. "shims"

[Lee]

Just one more note on this subject. It's best to take your micrometer to the dealer and measure the shim you are buying. Your mike might not match the one the manufacturer used to label the shim.

Also, it's not unusual to have the clearance not come out to what you expected when you install a shim. Assembly slop etc can leave you with a different clearance then you calculated. So best is to have a couple of shims extra on hand. The Bmw price of about $8 for a shim is pretty high compared to what I paid when doing the Yamaha.

Good advice. When I would receive mine in the mail I would double check it with a micrometer. After rubbing a film of oil on the shim and installing it, I would rotate the engine several times and check to clearance with a feeler gauge.