Re: 1984 Johnson 15 lower unit water tube removal

Home Forum Ask A Member 1984 Johnson 15 lower unit water tube removal Re: 1984 Johnson 15 lower unit water tube removal


fleetwin

US Member - 2 Years
Replies: 4737
Topics: 46
#79511

Yes, the powerhead must come off if you want to remove the water tube…
But, is he trying to make a short shaft engine out of a longshaft? I suppose it is possible to cut 5" off the water tube without removing the water tube, but it will be tough to get a cutting tool up inside the exhaust housing….
If you decide to pull the powerhead, know that this engine has the troublesome water tube grommet set up, and this engine may have two water tubes if it is a 15hp. The shorter tube just directs the cooling water down inside the rear passage of the exhaust housing and away from the open exhaust megaphone.
This engine looks like it is a fresh water engine so crushed water tube grommets is probably not an issue. But, your pal will want to update the water tubes and grommets if he is going through all the trouble of pulling the powerhead. There is also another way of avoiding future grommet issues by installing the grommets "improperly" on the original style water tubes. Let me know if you need/want more info…Don