What in the heck is this doing here & does it even belong?

[AquaEye]

1st 2 stroke sea doo that's down for engine/pump rebuild. (40.3 hrs)
Doing the rounds on dirt dobber incursions & noticed that this ball valve wasn't on any op or shop manual/pics.
Extensive search here & on YT & still nada.
Does this even belong on the flush port?
I got a bad feeling about this...

 

[tomanycars]

lol. Thats a genuine ball valve.

 

[mikidymac]

No, someone added it to flush the cooling system but it can restrict flow and cause overheating. The fittings and sizes are calibrated for flow on these. Just remove it and you will be fine.

 

[AquaEye]

No, someone added it to flush the cooling system but it can restrict flow and cause overheating. The fittings and sizes are calibrated for flow on these. Just remove it and you will be fine.

Thanks mikidymac.
Current "scorecard".
The piston ring gap clocked 2 hours to the left of locating pin (how the hell they stabbed the piston into the cylinder is beyond me)>Group K. Discovering the carb metering needles turn or more out of sync/OEM> OEM rebuild kit. The lack of absolutely no pump liner, the evidence of very little flush & overheat, oil tank hemorrhaging oil by the buckets>acquired 96 one piece & the fuel system holding no pressure @ all. No filter or gasket @ separator, cheap black fuel line chewed up @ the ends by worm gear clamps, >new gates, Oetiker stepless & FI clamps, radiused fuel line zip ties for oil lines, gasket & filter(s). Fuel gauge F1 fuse fried, jump across with solder, weld back cover, install inline fuse.
And now, this.
But, I knew of the "lack" of PMs & of the mischief of 3 teenage boys with access to professional tools. Purchased "dirt cheap" with eyes wide open.
But the mud dauber wasps?
No way, didn't count on that winged insect from hell to be-devil my endeavors. THEY MUST ALL DIE!

​

 

[etemplet]

Free isn't cheap enough for the ski you have. Needs total restoration.

 

[AquaEye]

Free isn't cheap enough for the ski you have. Needs total restoration.

Agreed. The ONLY redeeming value as of now, hull, paint & electrics are in premium condition, practically showroom as is the trailer. As for the rest...FUBAR.
Fresh water & kept in shop for most of it's miserable 40.3 hrs of it's tortured life @ the mercy of 3 teenagers with power tools always asking of themselves, "What were to happen if....?"

 

[etemplet]

Well that's a good thing. You're not worse off at all as far as I am concerned. For me rebuilding the entire skis is the only way to go from a reliability stand point. I pull everything and when I get finished they only need tweaking. What model are you working on?

 

[AquaEye]

Well that's a good thing. You're not worse off at all as far as I am concerned. For me rebuilding the entire skis is the only way to go from a reliability stand point. I pull everything and when I get finished they only need tweaking. What model are you working on?

1997 GTX.
1st 2 stroke Rotax ever owned. The idea of oil injection is appealing along with the added "bells & whistles". Became spoiled wrenching & premixing on Kawi & Yami since the 80s & frankly I'm sick & tired of it, premixing that is. Kinda out of my "comfort zone" with this one but still just nuts & bolts with a different gear to the rebuild/maintenance. (A real pia to pull the motor though)
I've always had faith of the Rotax/BRP motor especially @ 3,000+feet, never let me down(literally) in 10+cummilitive years.
Also have faith in the Mikuni oil inj pump, solid, uncomplicated design.
So yeah, I have earned faith in this brand of motor & I'm going to stick with it.
(Still haven't forgotten the about the Mikuni oil inj amount(s) verification video that I pledged to share with the community. Forthcoming but life is kinda getting in the way @ the moment.)
Shout out to all here on SDF members with the patience & willingness to share so as to give a hand up (sometimes to give a hand out). As I get some miles on the GTX/Rotax rebuild, hopefully I can pay it forward & share a thing or two about a thing or two.

 

[etemplet]

GTX (1996-2002) are my all around favorite Seadoo jet skis. Once you pull about 5 engines on the GTX it gets much more simplified. Took me a lot time till I read on this forum.... you don't need to disassemble the exhaust pipe. I disassemble it during a restoration because I want everything spot on. Learn as you go. Check for slotted raves and the Technical Service Bulletin while you have it apart. Good Luck

This is my 96. I had it sold but reneged. No way I wanted to rebuild another one like this, even for $3500. I'm keeping it. LOL