2014 AR 192 impeller question

[coleallen]

Hey guys, long time lurker first time poster. I have a 2014 AR 192 Supercharged, and I am finding conflicting info on the torque of the impeller. I have a copy of the service manual, and it shows 243 ft lbs torque, but on here, and watching YT, I have yet to see where anyone actually torqued it that high? Or do I just use my cheater bar and shaft locked in vise, and give it a good lean, as I know they will tighten themselves anyway.

Thanks for any suggestions

 

[FSH 210 Sport]

Hey guys, long time lurker first time poster. I have a 2014 AR 192 Supercharged, and I am finding conflicting info on the torque of the impeller. I have a copy of the service manual, and it shows 243 ft lbs torque, but on here, and watching YT, I have yet to see where anyone actually torqued it that high? Or do I just use my cheater bar and shaft locked in vise, and give it a good lean, as I know they will tighten themselves anyway.

Thanks for any suggestions

Contact Leading Edge Impellers.

 

[coleallen]

Thanks. I contacted them, and for anyone else, wondering, their exact words were " I never understood why Yamaha torqued them down to 240, we have always torqued to 100 with a little antiseeze and have never had one loosen, and they still come off with same amount of force next time".

 

[FSH 210 Sport]

R

Thanks. I contacted them, and for anyone else, wondering, their exact words were " I never understood why Yamaha torqued them down to 240, we have always torqued to 100 with a little antiseeze and have never had one loosen, and they still come off with same amount of force next time".

Right on!
I had a great chat with Dave the other day on my way home from Lake Mohave and this very subject came up. I didn’t want to speak for Dave so that’s why I told you to call them. He was surprised when I told him my service manual species 59 ft lbs for the impellers in my boat. And, the threads are left handed, so the engines are always trying to tighten them.

Were you asking because you’re doing some pump or impeller maintenance?

 

[coleallen]

Yes, doing an inspection at the end of last season, found the impeller and housing had decent wear and out of spec. Replacing housing with removeable wear ring, and new impeller. Also adding L13 cone.

 

[FSH 210 Sport]

Yes, doing an inspection at the end of last season, found the impeller and housing had decent wear and out of spec. Replacing housing with removeable wear ring, and new impeller. Also adding L13 cone.

Right on! Let us know how it works out!

 

[Neutron]

R

Right on!
I had a great chat with Dave the other day on my way home from Lake Mohave and this very subject came up. I didn’t want to speak for Dave so that’s why I told you to call them. He was surprised when I told him my service manual species 59 ft lbs for the impellers in my boat. And, the threads are left handed, so the engines are always trying to tighten them.

Were you asking because you’re doing some pump or impeller maintenance?

Exactly there is no need to crank an impeller to even 100ft lbs. Like you said it will always tighten when the engine is running.
I have tightened them to "snug" no torque at all on my ski and ran the ski for 2 outings, took the pump off and needed my cheater bar to break it loose