Forgot to mention
You have to remove the counterbalance spring before you can take off the pivot arm casting.
With head vertical, the spring always comes off if you unscrew the adjustment handle enough. However on some saws the eye bolt connecting the handle and spring is too short and the spring snaps off.? Its then v.v. difficult to re-stretch the spring to fit.?
If you grab the spring hook in the vice and bend it sideways (per pic) you can insert thin washers on alternate sides to lengthen it for refitting. About 10-15 per side are all that's needed - jv??
John Vreede
