The engine bolts should simply pull out, but here I hit a snag. Thirty-three years of dirt and corrosion have seized the front lower engine stud solidly in position, and it refuses point blank to shift. Gentle tapping with a copper mallet establishes the stud is fast in the crankcase and is not rusted into the frame, so it's out with the old hacksaw again. I'm not going to risk damaging either the frame or the crankcase; gently spreading the frame off the engine just gives me room to get a hacksaw blade in and slowly and painstakingly cut the ends off the stud. This does leave the seized stud locked in the crankcase, but I can get that removed later