98 Seadoo exhaust bolts breaking

[sweet71pea]

Bought 98 Seadoo GTS (720cc), had one sheared off bolts on exhaust manifold to expansion chamber. Replaced with correct bolts from Seadoo, sheared off again in 6-10hrs. Replaced with generic bolts milder steel. Sheared off in 6-10 hrs. Talking with other owners several have this problem but no one has answer. Helpppppp.

 

[BiXLL]

Re: 98 Seadoo exhaust bolts breaking

motor mounts tight and in good shape? You may get your answer at Seadoo.net also! click here

 

[Jeff Walkowiak]

Re: 98 Seadoo exhaust bolts breaking

common problem if the engind idles rough and a motor mount is bad and i bet there are more than one bad , it usually breaks a bolt or the one stud. carefully check the mounts rr then rf then lr then lf i usually find the rr is first to go then rf then lr never had a l,front go bad if you cant get it to idle smooth turn the idle up higher but the engine will shake the mounst apart and snap the bolts on 720 and 650 engines