Battery
You screw an M16 bolt into the rotor to pull it off. They are pretty tight so the drill is to tighten the bolt and then give it a sharp tap on the end of the bolt to jar the rotor off the crank taper.
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'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F