After purchasing new spark plugs and a new battery my jet ski finally started but now there is water that looks like it is squirting out of the bottom of engine compartment. The coupling is diverting the water all over so it is hard to tell where it is coming from. Is there a shaft seal or possibly a hose or plug came loose????

 

I take it that the ski did not run previously and now the issue of the water. All I can say is hook up with your manual or parts fiche to see if there are clamps like you mentioned to check. Good luck and welcome to KF.