Can somebody please help? I'm looking for a shop manual for the 064 and 066 saw. I bought a saw a while back and there is no identification plate on top. I have taken the saw down to the Stihl dealer and service. We tried running the serial number and they came up with nothing. They think it is an 066 but aren't completely sure. I need to do some work on the saw and need parts identification. The only service manual I can find has a virus attached to it. Any help would be greatly appreciated.