Recent content by mikidymac

Check with @etemplet, he has bought a few reman cranks.

Seadoo forums has nothing to do with the Facebook group as far as I know. You will get much better maintenance and mods information here than you will from the "experts" on Facebook.

Another quality SBT engine...... Those stripes on the one cylinder are interesting. I have never seen one so uniform. That engine got hot at some point too, the pupe paint is badly burnt.

Pretty sure that the 1995 is a 657X engine and not a 720 like yours. Engine parts will not interchange.

I don't think that circuit is supposed to get 12V, it only uses the resistance of the baffle. But I am no electrical expert either, so take that for what it is worth.

So it is a 1994 but has 720 parts, that is going t be an issue.

WOW! That wiring is a total hack job. Nothing is sealed and water proof or spark proof. I would trace each wire and start over using marine wire, marine terminals and marine heat-shrink.

There is no external fuel pump on these. The tube in the tank is just a pickup and fuel level sensor. The fuel pump is built-into the body of the front carburetor. Follow the carb rebuild thread sticky to the letter.

This is a wasted spark ignition so the coil only gets one signal to spark. If you are getting spark only out of one sparkplug it can only be the coil, wires or sparkplug.

You have an absolute mess on your hands here... Engine was an SBT which is not great quality. Electrical connections have been spliced without waterproof connections. Engine electrical box is clearly 717. So if it is it won't work correctly with a 657X electrical box for the MPEM. What are the...

If only you would use all this knowledge for good instead of evil (destroying power tools). ;)

Correct, I made my own spring list years ago and bought a 242 to compare. It is closer to a 80 gram than a 65 gram and is all that is available now. If you have the original spring then I would expect it to be between the 35 and 38 psi from the mikuni chart. 1994 SPX 270500130 730-03027-T...

If the stock spring is an 80 gram and I am pretty sure it is and a 1.5 needle and seat it will yield 38 psi.

It depends on which way the lip of the oil seal is facing. If it is facing the cavity then pressure could make the seal actually tighter and not show a leak but it could leak under no pressure. You have a pretty major leak if it is filling back up that fast.

You can't use any aftermarket carb parts, period!. Genuine Mikuni parts or nothing, you will just be chasing your tail and we can't help you. 1994 XP has the dual carb 657X engine. You should be running 80 gram springs and 1.5 needle and seat. Pop off should be clean at 38 psi.