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#265064
frankr
Participant

    OK, I’ve done some more digging.

    The chart above was printed before 1957, so it makes sense that 1957 is not included.

    I found the 1958 parts book for model 3385.  It still uses the high mount pump and 3755-5100 impellers.  So, 1957 surely would be the same.

    1958 was the year of the change to McCulloch.  The 1958 McCulloch was model 133 and had the low-mount pump and different impellers.

    Hope this clears it up just a tad, maybe