Crankshaft Installation

[digthewells]

1991 Seadoo SP Yellow engine.

Do you have to remove the head and cylinders to install the crank shaft or can you slide the pistons into the cylinders without taking apart the top end?

Anyone with experience doing this have any tips?

Thanks a lot!

 

[kustomkarl]

It's a little more detailed than just typing a quick answer here in the Seadoo forum. Here is a great idea for you;
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Karl

 

[6KJR]

Tearing down a 2 stroke engine isnt too much work. And while its apart you can inspect anything else for damage or things that may need attention as well.

 

[seadoosnipe]

.......?

It is possible, but will be a bit more involved. The cylinders design at the bottom end has a taper design that will allow the rings to collapse into their respective grooves as you insert the piston. But the rings have to be in a certain location when being installed, making it hard enough to do one, much less two at the same time.

I suggest you remove the cylinder heads and put them back on, one at a time so you can pay attention to detail as you slide them back on. I use "lithium" spray grease in assembly because of it's protective and lubricating qualities on metal to metal parts..........:cheers: