Removing 5" extension from Exhaust Tube

[Carl]

I have a 25" mercury 150 engine and a 20" mercury 150 HP parts engine. Same vintage so most parts are interchangeable. I am trying to remove the 5" extension from the 25" engine exhaust tube and it does not seem to move at all. I don't want to break or damage anything, - so what is the trick? I don't see any fasteners on the engine or in any parts sketches. Any help is appreciated. Thanks

[spareparts]

heat, lots of it. You may have to remove the studs before you can get it off the mid section

[RidgeRunner]

The exhaust cans are identical on the 20,25" and 30" motors as I recall. You sure you have to remove 5" of it? LOL!

[RidgeRunner]

I am thinking 3.0Liter Merc stuff. The 2.0,2.4,2.5 might be different, nevermind.

[bradford]

I am thinking 3.0Liter Merc stuff. The 2.0,2.4,2.5 might be different, nevermind.

Hell, I thought he dropped a socket extension down the hole when I first read it.