Mercruiser exhaust shutter

[boattoy]

Ive got a merc 470 and before I take the boat out for the first time I want to make sure the shutter is in good working order. I just had drive and bellows off and didnt notice pieces of the shutter in the exhaust. When its idiling most water/exhaust comes out side holes. Some comes out prop. This ok? How hard is it to inspect the shutter?

If its bad can it be replaced without removing drive transom or motor?

 

[stonyloam]

Re: Mercruiser exhaust shutter

Depends, what year is your motor? Do you have the combination exhaust elbow reservoir like this: http://www.mercruiserparts.com/Show...UST+MANIFOLD+AND+EXHAUST+ELBOW+(ALUMINUM)#17? You do not have to pull the motor. Your exhaust water is OK.

 

[boattoy]

Re: Mercruiser exhaust shutter

I was able to locate it through diagrams. its an 86. mine has a coupler at the end of coolant tank, then a bent cast pipe, coupler then another bent cast pipe going to transom. I pulled(more like muscled) the middle pipe off and to no suprise there it was, just a lonely rubber coated metal rod. def no flapping going on in there.

Is this the only shutter? i found a small piece of rubber up against the starboard relief hole(im guessing its part of old shutter). i can pull it through with some pliers if they arent supposed to be there

 

[stonyloam]

Re: Mercruiser exhaust shutter

Just one shutter (2 halves) pull the pieces out. There you go, need the shutter and two grommets : http://www.mercruiserparts.com/Show.../46.png&inbr=908&bnbr=230&bdesc=EXHAUST+ELBOW, be careful not to drop them when you install, don't ask me hou I know:facepalm:. Good luck.

 

[boattoy]

Re: Mercruiser exhaust shutter

im sure as soon as I start thinking about not dropping it ill drop it:facepalm: haha. I pulled the piece out and inspected everything and found nothing else. luckily my local shop has everything in stock

 

[Greytfun]

Re: Mercruiser exhaust shutter

There's a second piece somewhere. I found one of mine at the botttom of my lower unit.