While looking up genset today at the Kohler web site, I found this article referring to exhaust pipe recall.
http://www.kohlerpower.c...4&contentNumber=404
Obviously, you should check your Kohler to see whethere it is affected. If the mfr is doing this it must be a signficant thing. Pay attention! CO is nothing to take casually.
The Kohler contact info is in the linked article
Joel Albert, Potomac MD
"Charlie B" - 1988 32' FBS
Twin 318's/FWC/16x15 nibral props
docked Deale, MD