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Thanks for the engine info link. Where should I send that crank to? Is it true there is a "crank rebuild kit" sold by Yamaha? I know of a very capable engine shop in town that could do the labor for me, how much to buy the rebuild kit? generally speaking? Why wouldn't I/what issues would I...

can someone please give me a run down on all super jet engines and what they are. I know they make 650, 701, 760, but don't know how these 6m6, 61x, 62t, case numbers correspond to what engine. I have a 91 sj, 650 6m6 case ( I know that much) that recently swallowed one of my reeds and sent...

how bout any of the other brands, west coast, and others that i can't think of right now.

i currently have a 6m6 650 engine all stock, I want to put a different exhaust setup on it, but don't want to shell out the kinda money I have been seeing used/new pipes for quite yet. I have heard of putting a kawasaki 650sx pipe on a 650 sj engine, and my buddy has one he will give to me...

Need some quick help with my 650 sj. It wasn't running right, originally I thought it was spark issue with the crappy spark plug wires, then thought maybe carb, so I took that all apart and cleaned it up, then finally I got to looking at the reed valves, and that was the answer... One of them...

no its for sure reeds..... question remains, one of them got munched and parts of it had to have gone through the engine. Do i disassemble and attempt to clean it all up, or figure the damage has already been done and just put it back together? Compression is still good.... but I see very small...

alright, that just pulls out of there, simple enough... Next question, the reed that went bad is missing pieces to it, meaning it probably got sucked into the engine... Does that mean I am going to want to go for a whole disassembly/cleaning/inspection/rebuild?

manifold is off, i was wondering how to get the reeds out... still have not gone out in the garage and looked, boy im lazy. thought someone would have a quick answer on how to get them out of there (my friend originally took it apart for me while I was not home, curiosity got the best of him)...

can it be done with the engine in the ski? anyone else?

also, that 44mm mikuni is stock on a '91 650 sj right?

cleaned carb, no go. Took carb and intake off tonight, discovered one of my reeds is bent/messed up and facing the wrong way. Now, do I start a new discussion or can someone point me somewhere as to how to change these out? What should I put back in there for reeds? Stock or aftermarket...

the diaphragm in the float mechanism seemed a bit goofy, I have seen these in outboard engines where they were just slightly distorted/wouldn't lay flat and that was enough to make it not run right... Is that a possibility? Time for a carb rebuild? How much does a rebuild kit cost? What little...

Still having trouble with my ski! I put fresh terminal ends on (in place of my makeshift job with the used marine plugs I had laying around) I am not sure what to try next. Before I put the plug wires back on I just held the stripped wire to the plugs and had a buddy crank my ski for me, there...

yeah, I should have just taken it apart in the first place. It is pretty self explanatory. What I did for now was took an old set of marine plugs & wires I had around and robbed the boot and terminal from there. I cut a couple inches off the stock wire and attached these in place. So far so...

still not totally understanding, I guess I didn't look at mine close enough. You are saying there is regular wire coming out of the coil and then the insulated plug wire connects to it? That connection is the problem? Anyone have pics or link to any other threads about this? Mine are all...

is the problem at the plug/boot end or the coil to wire connection? No other way to test the coil? If it goes bad why does one side work and not the other?

'91 super jet has intermittent loss of spark at one of my plugs... I put new plugs in to no avail. I am thinking the coil is being funny, or at least the wire connection to the coil? Is this a common issue? How do I fix? is there any way to test to make sure that coil is good (resistance, ohm's...

no that was freshwater, I got a rope around it pretty fast cause I was afraid it was going down... I wish once I had it back in 5 - 6 feet of water I would have let it go to see what would have happened. Anyone else know anything about how good of a bottom feeder the sj is

Boris - thanks. jfw432 - yeah I came close to completely loosing it, will these things sink if they do fill up? mine was floating nose down about 2" above the surface, but I got a rope tied around it pretty quick (scared me $H!TLE$$) Internal corrosion? I wouldn't worry bout that, just run it...

one more thing, can someone point me to a good thread in regards to the slutty hood mod? I searched around a bit, not finding any really good threads showing what is being done.