Oh! What a great find! I have the 'one-arm' model (a 61) and it's my avatar picture! The two-arm model you have looks fantastic!
The draining issue could be a number of things - first, check the drain hose and make sure it is not blocked (the 61 darn near drove me crazy with a hose blocked due to flakes of the hose having flaked off). I have also encountered issues with the actual drain pump casing being blocked up with some kind of corroded gunk - once cleaned out, the pump was just fine. Last, it could be that the drain pump itself has given up, but I believe that there are modern washer drain pumps that can be substituted.
Great save and keep us posted!!