Exhaust by-pass flapper missing

[New Era]

I have an '89 Bayliner with a OMC 5.0L. The butterfly flapper valve in the right exhaust tube is missing, I think you call it a by-pass valve. I guess it broke off and fell down in farther. If it did is that going to cause a problem, maybe block exhaust flow on that side? Thank You

 

[Don S]

Re: Exhaust by-pass flapper missing

It's called a flapper or shutter, not a bypass.
Yes, it can plug up the exhaust. pull the outdrive, you should be able to find it either in the exhaust passages of the drive.

 

[New Era]

Re: Exhaust by-pass flapper missing

With the drive tilted up it looks pretty easy to pull off the exhaust boot from the transom. Could I do this to get to the broken flapper instead of pulling off the drive. The reason being is that I have to order every part I need for this thing. I do not live anywhere near a Marine sales or parts store. So if I pull the drive I do not have a new Gasket or nylon lock nuts to replace. I was hoping to get this in the water by Labor Day. Thanks