Can't get her top off!

[Kernow Buoy]

bought a 1992 Yamaha 30hp 2 stroke on a Futura, running extremely well but I was a bit concerned by very weak tell tale so not run it at sea (just as well)
Took water pump apart and found horribly worn impeller so replaced but although stream improved still felt it was weak. Turns out the water tube from the pump to the block had been snapped and a bodged repair made, some of the water from the pump was never making to to the block but coming out of the bodge and running back down the exhaust vent, I need to replace the pipe except I can't get the mid section seperated from the lower cowl.

I've removed 8 bolts (and lifted the block out) but still can't break that gasket so I can get at the top of the pipe (it's only about 2 inches broken off at the top)
Pic 3 is the same mid section as mine showing the 8 bolt holes
pic 4 is the same pipe, mine is split just above the coller
Am I missing something? 'hidden' bolt somewhere or do these things just need plenty of encouragement to come apart?

[samt]

I have had these apart before. I can't remember exactly without an engine in front of me. So appologies if I confuse things.

There is a exhaust muffler/manifold inside the drive shaft housing which sits in there tight with rubber dampers. This can be a nightmare to remove. You need to remove the driveshaft housing from the engine mounts, and then prize the two parts apart along the gasket pictured, pulling the manifold (held tight by the rubber dampers) out the driveshaft housing. The manifold is bolted upwards, so there is no easy way around this.

Have a look at this diagram; 1992 30ELRQ Yamaha Outboard UPPER CASING Diagram and Parts

[Kernow Buoy]

SamT
Thanks very much for that I think you've described it exactly how it is, I'll have another go in the morning.

Simon she's had a double of plusgas!