Very true; a quality bit and a GOOD rotary hammer drill is very important.
I have the manual as a PDF on my computer; here is the page regarding chain inspection.
My lift is a 2006 model
-Tim
I also picked up a Mohawk System 1 out of an old highway department shed. If you email Mohawk your serial number they can tell you exactly when it was built and will send you the appropriate manual for that year. They were very responsive and it seems like any part I might need was available...