Sounds like a broken rod.
Seadoo gsx limited. 1999 in excellent condition. If you remove the gray cover over the driveshaft you may notice grease fittings on one or both ends of the driveshaft. Here is a 1998 SeaDoo GSX Limited 2 seat jet ski in very nice original condition - 951cc 2 stroke oil injected motor - hull has 163 original hours and engine had complete rebuild by Groves Powersports in Mason MI 2 summers ago and has about 10 hours run time since it was done.
What is wrong with 1998 Seadoo GSX Limited. The engines bore and stroke. 951cc 2 stroke motor with only 116 hrs.
The XP Limited is back after what was a fairly successful debut. 130 hpBoth carbs have been gone through and fuel lines replaced. The GSX Limited is a very fun and fast ski.
View and Download Sea-doo GSX Limited shop manual online. 1999 SeaDoo GS 58465847 GSX Limited 58485849 GSX RFI 56375638 GTI 58845885 GTS 5883 GTX Limited 58885889 GTX RFI 58865887 SPX 56365828 XP Limited 58685869 ServiceShop Manual. Both trailer and ski have 12months reg.
Dr Honda mentioned your driveshaft. 1999 SeaDoo GSX RFI. It only has 72hrs run time very clean runs great.
The GSX Limited Edition Sea-Doo also has a two-stroke twin-cylinder Bombardier Rotax engine but with 9512 cc displacement compared to the GSXs 782 cc engine. Select 1999 SeaDoo Manual. Operates with Mikuni BN 46 carburetors has a dry weight of 523 lbs.