I had a 23' I/O for 13yrs and I'm w/ John123 on this. I may have not always run it a full 5 minutes as suggested but I always ran it for a couple of min. before cranking. A $25 blower from Rule or whoever is a must. Coast Guard requirement aside, this is a prime example of Father Franks's definition of wisdom.
Also, as listed on the brochure you posted, it was optional equipment #11 on the Moesly 21.
http://www.classicseacraft.com/forum...rev=#Post63852
