While doing some exhaust work, I discovered that the water shutter in the Y-pipe was gone on 1 side (except for the hinge pin) and badly deteriorated on the other. How do you remove and replace these? I can get my hand on them but a good pull didn't budge it. Does it slide out of the mounting notch to the side?
Looks like I can pick them up for about $22 each. Are they really necessary?
http://www.sterndrives.com/exhaustshutters.html