Anyone Run their Yamaha 250 OX66 on Muffs?

steamin53

Petty Officer 3rd Class
Joined
Jan 19, 2004
Messages
93
Does anyone run their OX66 engine on muffs? Everytime I try to run my 99 250 hp Salt Water Series OX66 on the muffs (even with a dual feed muffs) it overheats after a few minutes. NO overheating in the water however.

??

Steve
 

Captain Paul

Petty Officer 2nd Class
Joined
Jul 31, 2005
Messages
143
Re: Anyone Run their Yamaha 250 OX66 on Muffs?

I have a 2001 150. I run mine on occasion, just a short period of time. I always run it on the flush for a minute or two first, then quickly screw the flush back on and into the muffs. Mine has overheated on the muffs before and I was given the tip from Rodbolt to check and clean the poppit valve. Actually,that thing has been redisgned. You should do a search. It's an easy/cheap job. All of that said, it just does not seem to like the muffs, so it's only once or twice a season I fire it up on them.
 

steamin53

Petty Officer 3rd Class
Joined
Jan 19, 2004
Messages
93
Re: Anyone Run their Yamaha 250 OX66 on Muffs?

Thanks for the reply. What "thing" do you refer to as having been redesigned?

Steve
 
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