Everybody thinks there was this great engineering change at OMC in 1964. there was not. Powerheads from the late 50s were the same as the later ones. They were still using bushings in later motors. What changed was the oil recommendation nothing else.
Is a Suzuki built motor for Arctic cat before their Bankruptcy. That makes it 81 or older. Go to Browns point marine look up early Suzuki DT 25 motors.
Yup that is probably the cheapest carb kit you found and they are nothing but trouble. hopefully you did not force that in the hole, because more than likely the threads are wrong. Sideview shows 2 different threads.
They went to the bigger pump on everything later in the 80s or early 90s. usually used a reducing T on the smaller engines. a cost cutting measure I think.
They make a rebuild kit for those. Easy to do just watch out for the little springs. Pretty sure this is it. Stay away from the cheap chinese $20 ones they are nothing but trouble. A factory pump is $170 the rebuild kit is $16
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