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No, you will be able to do that with your SN SJ. Even with the rear exhaust (unlike her former 440 Super Stock) my wife (but not I) can do a 180 to 360 degree tail stands with her SN SJ.

The driveshaft failed last August 2024. In August 2018, I had the housing rebuilt with my intermediate shaft. I did not recenter the pump drive shaft. I just assumed that if it was centered before, then it would stay centered with the new intermediate shaft bearing housing. I did grease the...

@streetroc I think you should keep the SN. Yesterday I got to ride my buddy's SN 650 with a Coffman Pipe. It was definitely slower than I remember my wife's SN with a 701 61X single carb and stock exhaust. But in comparison with the 2019 SJ - which feels really locked down to the water -...

Understood. Suggestions where to buy? Is there an alignment tool I need to assure proper alignment of the midshaft to engine or midshaft to pump? Oh, and why do you think this happened? thank you

1994 Yamaha Square Nose Super Jet HIN No.: YAMA1937B494 PRI I.D.: GH7 0800726 Other than a new drive shaft, midshaft bearing any other parts I will need? I noticed that the pump was shimmed. Is there an alignment tool I should use?

^^^ I will ask my buddy and get back to you in this thread with his suggestions.

IMHO it will always feel like a battleship compared to a 550 or an FX-1. But my buddy just refinished and vinyl wrapped his SN and it looks great. It has a b-pipe and he says that putting a pipe on any SJ will wake it up. Basically he says that power to weight ratio in a SJ can only be cured...

Just a point for contrast. My wife prefers her '94 SN SJ over the FX-1 and the 2019 RN SJ. She is one with the ski (as a former racer) and loves to scallop* side to side carved turns at a high frequency. * intransitive verb To edge with a series of curved projections.

In my personal experience, owning a 1993 550sx with reed engine, a 1995 FX-1 and a 2019 Super Jet, the comments by @streetroc and @WFO Speedracer above are spot on. I can't wait to get my 550x running again (I don't think I have ridden it since buying the FX-1 six years ago), so that I can...

I can turn the engine over by hand. Well really by screwdriver down the spark plug holes very easily.

Well, I should have access to the front of the starter after I remove the fuel tank but before I remove the engine. So I will try to tap the case with a soft face dead blow hammer.

Well, just for giggles, I took the known-good battery out of the FX-1 and put it into the 550sx and . . . Same thing, you guys were right. Nothing but a click/clunk. No other sound of the starter trying to turn. So, I am considering adding this to that jet ski trailer and make it my...

Thanks @fastgtfairlane and @WFO Speedracer I have rebuilt the Bendix on the Super Jet type starters a couple of times, but never the motor. I'll be back . . .

1993 550x with reed engine. Interstate Battery, 12.79 DCV Starter switch causes (the starter solenoid?) to click/clunk, but no cranking by the starter whatsoever - not even an attempt to spin the engine. No humming, no sound, no nothing. 12.79 DCV at the starter solenoid-in post. 0 DCV at...

Just a thought. I disconnect and bypass all of the On-Reserve-Off fuel lines in our skis. And just leave the selector switch there but non-functional. I also install an internal fill. Because it allows me to look directly into the tank. Which can be helpful for many things including when...

The FishStix look cool! If you want to try a slightly more expensive version, Wax has these which I put on my FX-1 and everyone and I mean everyone likes how they improve carving and reduce sliding -- when you want to slide you simply do not lean the tail of the ski as much ...

@Myself I know that you are one of the professionals on this forum. Can we peel the onion a little farther on this matter? If you take a look at the Super BN 44 Diagram on the left and the Super BN 38 on the right, you will notice that the SBN44 does not have grooves for the Rubber Oring to...

Good eye @Myself !!!!!!!!!!! I see the difference now. Is this the correct one?

@Myself Thank you for your post. I am looking at my photos above. Is the Diaphragm wrong? Or is the round skeletonized gasket wrong? Or both. I believe it is a stock Yamaha SBN44.