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You think you have spark but you may need to hook up a spark tester to check. So next, do you have fuel coming out of the carbs into the engine? If you can, spray a little gas down the carbs and see...

Yes. US Coast Guard approved fuel line and/or OEM fuel line is better (and more expensive) but a lot of people use automotive style fuel hose. Just make sure it doesn't kink when you route it around.

If its like mine, there is an o-ring on the end of the starter that goes into the engine. You probably stuck on that oring. try twisting, turning, wiggling, and pulling hard. maybe even try spraying...

Well the bad news is, you can't use that stuff to seal the crankcase. It says its "Not for use on parts in contact with gasoline." That stuff can be used for areas like an 4 stroke oil pan or valve...

You got a good deal there. Answers in red up above

I am also thankful for the confirmation!

Some members have had REALLY bad lucks with hotrod cranks in the past. Read through this thread: http://www.greenhulk.net/forums/showthread.php?t=109498. The information is getting dated so things...

Glad I found this old post! I've been trying to cleanse this "restricted" fitting for a few days. Now I know I can move on!

Nothing goes in that open hole tab that's broken so you're ok. the hole next to it is important. it should have threads in it where the motor mount belly pan bolts to it.

That's fixes most of the possible problems with powervalves but they can still fail in other ways. I'm not a PV1200 hater, but they do have some downsides. Because of the location of the carbs and...

If they are in good shape and the clearance between the piston and cylinder is within spec, you can reuse them.

These engines are very simple in comparison to a 4 stroke or diesel engine.
For the crank, you could send your out to Crankworks.com and have it rebuilt for...maybe $500 (someone who's has had it...

I've used both but I try to stick to non-ethanol gas in my 2 stroke ski. If I put 10% ethanol gas in my ski, I try to use it up quicker. I store my ski (lawn mower, snowblower, weedwacker, chain saw,...

Sadly, there isn't really a good place to get a good quality replacement motor for your ski. That's why we are suggesting you fix it. Most rebuild places will send you an engine with lower quality...

If the case halves, cylinders, and head are in good enough shape (no big holes in it or other MAJOR damage) then you can get a gasket kit, new crank, and bore/hone/re-nic the cylinders. Sounds...

How do I prevent this spin out from happening...any words of wisdom?[/QUOTE]

You could go right to gripping the inserts with a vice grips from inside the hull, otherwise, there isn't much you can...

My GP1200 leans and teeter totters back and forth more with the Riva sponsons down. But it only happens at slower speeds. So I just put them up and it rides flat as can be.
Point being, I think...

It pretty much has to be the powervalves not working, I'd think.

I lightly greased my base gasket(OEM yamaha) with marine grease. I can't remember if I did anything to the exhaust manifold gasket (I used an OEM WaveRaider 1100 gasket), but I may have greased that...

Took it on its maiden voyage for this season today. I freshened up the carbs, replaced the fuel filter, and fixed a few small odds and ends last week. She ran great as usual!

Black epoxy paint works the best. VHT has some good epoxy paint.

http://shop.advanceautoparts.com/wcsstore/CVWEB/staticproductimage//N3587/large/7141585_vht_SP652_pri_larg.jpg

Black epoxy...

That's pretty much how I feel about it, too.

They are a pain, but worth it. They look good!

Read the carb synchronization section on this Group K article, inspect your carbs, and cross this off the hesitation/bog check list

http://www.groupk.com/y1100-1200updt.htm

The oil also lubes the pump and running the pump dry could cause it to fail....maybe