I am new hear I had a boat probably 25 years ago but been going to the river the last 10 years with my family was finally able to get a boat ended up getting 89 commander jet boat one owner paperwork in hand he took it to get seviced before I picked it up  but took it out and with in 30 minutes I was broke going down the river about 25-30 miles then slowed down to a stop put in nutural put back into gear and nothing got it in checked areas nothing was clogged and took clean out of was able to turn shaft by hand looked in nozzle nothing turned popped of inspection looks like the u joint broke need some knowledge from people that know

I have a 19' Commander and went through the same thing in June at the river. Is yours a 454 Marine power Sport Pac? If so you will need to pull the motor or pump ( I pulled the motor) due to the u joints being in a bell housing. I got my u joint unit from CP Performance but should have bought it from Tom at Jet Boat Performance. They are about $180.00. I had the motor out / in in about 6 -7 hours not too bad but had to take my back seat out to slide the motor forward. Hope this helps, let me know if you have any additional questions.

Was it just a u-joint? One of mine went out 2 years ago and sheered the splined end of my pump shaft clean off.


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I have a 19' Commander and went through the same thing in June at the river. Is yours a 454 Marine power Sport Pac? If so you will need to pull the motor or pump ( I pulled the motor) due to the u joints being in a bell housing. I got my u joint unit from CP Performance but should have bought it from Tom at Jet Boat Performance. They are about $180.00. I had the motor out / in in about 6 -7 hours not too bad but had to take my back seat out to slide the motor forward. Hope this helps, let me know if you have any additional questions.

What’s Toms number at Jet boat performance?


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