Need Help Identifying Setup/Parts

[driver17]

I have had this jetski for two summers now and I know almost nothing about it. I bought it from a friend who never rode it who bought it from a guy who builds them. I have ridden it many many times and it is such a blast I do not know how anyone can own one and not ride it...

Anyways here are some pics...any help in identifying what motor, carb, pipe, pump, impeller, etc. would be greatly appreciated! Even if it's just stock please let me know.

I was told it is a 94 750sx hull and I put a R&D aquavein intake grate on it (didn't have intake grate at all when I bought it) and I know it has a R&D ride plate on. I also believe that is a 'big pin' motor...?

That is all I know about it so far....

 

[MarkR316]

Pretty much looks like a stock setup, other than a can't tell about the water box. See what others might think.

 

[tor*p*do]

big pin 750
stock keihin CDK2 carb
stock exhaust
still has crankcase drain (black knob) the NEEDS to be removed. cable goes to drain port on bottom of motor that is notorius for leaking and leaning out motor
still has choke plate; primer is better but if it starts fine, no worries
a/m air cleaner about to spit chunks of wire mesh into your motor (oem is best!)
everyhting else looks stock except the stainless steel impellor

 

[user_error]

stock motor stock exhaust stock carb, Ocean Pro flame arrestor, looks like a stainless prop.

basically a stock ski. the exhaust is a different color because it came from an earlier model year motor

 

[Magyar68]

In Pic #6 and #8 can't tell for sure but is there a embossed number next to the .743L? It will be a circle with a 22 or 24 in it. If there is not one there then, it is a true Small pin 11005-3720 Cylinder. This may have been intentional these have 89 Exhaust Port Timing Vs 93, or 96 on later years.