Hi Maurice,
Usually finding parts for rare mowers like the Collect-o-matic mower isn't something that will turn up very often, it's
mostly easier to find another Collect-o-matic mower for sale but even that could take years to find so you can use a
fuel tank from another mower and make the missing parts or it's a waiting game until you see another mower for sale.
I see a few people that are after rare mowers and they put up a few wanted ads online ,Gumtree ,Facebook.
Cheers
Max.