Briggs is recommending replacing the 126M02-0432 engine with a 126M02-1015, which briggs distribution is superceding to a 104m02-0021-F1 with a note to contact tech support if used on a log splitter. I suspect that the recommended replacement has the aluminum flywheel, and needs to be replaced with the heavy flywheel to make it work.
the 126M02-0432 is no longer a valid engine in the briggs distribution system.