Exhaust pipe blockage/removal?

[SaltyBones]

From blowing into the tube that comes into this nipple I marked, it appears blocked at this point. Just to make sure before I do it...I do need to remove the exhaust pipe to clear this blockage...correct?

Also...What size are those 4 bolts on the top holding it down? Any tips on removal?

 

[mikidymac]

Unfortunately you will probably have to remove the pipe to get to that fitting. IF i remember correctly those are either 15mm or 17mm. I think there is also a bolt that goes through the support that is cast into the pipe that connects the upper pipe to the lower chamber.

 

[SaltyBones]

So...four on the top and one on the side and it should break loose?

Also, I don't know if it's anything like risers on a boat, but I remember both mating surfaces must be filed down and evened out before reassembled. Is this the same for jet skis, or do I just grab a gasket and bolt them back together?

 

[mikidymac]

Just clean the surfaces and install a new gasket dry. I like to use some thread lock too because these do vibrate.

 

[SaltyBones]

Any special care since they are exhaust bolts and hex (Hex bolts scare me anyway)? I sprayed some PB Blaster on them and will let them sit a day or few. I'm scared to death the heads are going to strip

 

[SabrToothSqrl]

You should be fine. SEA-DOO built these things to last. I've taken apart stuff that looked like trash, and it opened up.

I also go the OCD route and actually hit all the bolts with a wire wheel (bench grinder) before reassembly. Makes them all clean and shiney. Bolt right in smooth then. No crud in the threads.

 

[Strizzo]

You want to be sure to get the torque correct when you put it back. The parts expand when hot and if it's overtorqued it'll snap the bolts.