On Sat, 05 Feb 2011 13:55:11 -0800, Oren wrote:

On Sat, 5 Feb 2011 15:30:02 -0500, "Twayne"
wrote:

If it has a carburator and burns gasoline, there most definitely IS a way to
adjust the mixture!! Check the carb documentation or the machine's
paperwork.

Agreed! I've _never_ seen a B&S engine that did not allow for
air/fuel mixture adjustment (since I was knee-high to a grasshopper).

OP: enter essential information here, find the link for the
machine/parts/exploded view and post it.

http://www.briggsandstratton.com/engines/support.aspx
The last 5 or more years there is no adjustment provided.
It is an EPA thing.
Might be able to put on an earlier carb or modify the current one with
old parts.