Because the pre-ABS 200's have two separate hydraulic systems, the recommended sequence (below) bleeds each system separately.

Either system can be done first:

System A:
1) Left rear
2) Left front - Upper piston chambers (single bleeder, top)
3) Right front - Upper piston chambers (single bleeder, top)

System B:
4) Right rear
5) Right front - Lower piston chambers (inner and outer bleeders, either first)
6) Left front - Lower piston chambers (inner and outer bleeders, either first)

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You can prevent Master Cylinder Brake Fluid Loss from any/all open brake line(s) by blocking the brake pedal depressed before you start. It only takes an inch or two on the pre ABS 240s.

>>Disconnect the battery to keep brake lights off while the pedal prop is in place.<<

I've been using this on '80s 240s for years now, with a wooden prop that hooks to the bottom edge of the pedal and bears against the 240 seat adjuster bar. It's handy for checking brake lights too.

--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.