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I was given a 1990 SN SJ bare hull with stock pole and hood. Since the hull is bare, I would like to reinforce it now for the surf. I would like to have a ski which I am not afraid to break. But with that attitude, I had better reinforce it now . . .

Thanks BK! I started a conversation. Hopefully they will also see this thread.

Thanks BK, I looked on their youtube channel, went to their website and saw nothing. Plus under the video they only link the bulk fabric not the pre-cut fabric. I also went to Jared's JetSkiAddict youtube channel and he does not mention it. Anyone know how to get a hold of Jared?

RSKI riders has a surf ski super jet fiberglass reinforcement video which shows a laser cut chopped strand and S-glass kit for to reinforce a super jet hull. Does anyone know where I could get something like that? Or does anyone have a template which I could lay over my fabric to cut out the...

Well initially, in September 2024 when my wife skied the ski in it sounded to me like it was a top end problem with the engine. Not a deep bell sound, but a top end sound. So, I pulled the engine. And I spun the midshaft coupler and it was smooth and it spun the impeller just fine. So, I...

See that sand? It's not sand. A magnet proves that those are metal filings. The splines inside the midshaft are gone. It is smooth. But the midshaft bearing spins smoothly. So can the housing be rebuilt with a new intermediate shaft?

@WFO Speedracer then gladly I am doing my job! My highest function on any forum is to ask the stupid questions , , ,

Question: The jet pump is out and When I spin the drive shaft, the Impeller (item 39) spins BUT the fan in this housing below DOES NOT SPIN. Is it supposed to spin when the Impeller (item 39) spins?

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...