There is no such thing as a Hitachi CFS10. It's a C10FS.I have owned this Hitachi 10 inch sliding mitre saw for about 15 years. I recently brought it into a service shop or vendor for service. I asked them to align all settings and resquare.
I paid about $130 for this service. at the jobsite today, the blade would not turn. I took off the blade and the arbor spun freely. As I tightened the nut for the blade, the blade would not turn. I seems like the vendor - who are on vacation - returned the saw in a transport mode.