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how do i determine which engine i have? 99 gsx

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stang32

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I am reading about making repairs to my jet ski & I have no idea which motor I have in it. it is a dual carb set up & looks factory. we have owned it since 2002
 
If it's stock... it should be a 947. there should also be an engine tag to verify it.


Do you have a reason to thing the engine is wrong?
 
ID

tag plate is on magnito top.
On craft rear is a plate, last two numbers are the year.
 
Someone here recently gave a very good way to determine if a 951 - the head is shaped like large eyeglasses, the 787 head is rectangular shaped.
 
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