I am setting up a dual carb on my 235 and have what I hope are matching carbs. The stamped flange has (H37 964S) on one carb and (A37 964S) on the other. I have not been able to find out what the difference is between the H and the A. I am thinking just a revision as the are a few differences on the accelerator pumps on these two. Thanks in advance for any help.

Last edited by Bart_Bosco; 11/20/2012 12:18 AM.
If you never tell a lie, you never need to remember what you said.