1995 johnson 25hp water tube upper washer

[wingster51]

i changed the impeller on my 25hp johnson. there is supposed to be a washer on top of the water tube where it goes into the powerhead. mine is missing and nobody carries the part. what should I use or if I use nothing will the powerhead still get cooling water. thanks

 

[fireman57]

Are you sure it isn't stuck in the powerhead? Might need a good flashlight and the right angle to find it.

 

[wingster51]

I am pretty sure. It came out in pieces when i pulled the lower unit

 

[fireman57]

I am assuming you are talking about the oring that fits on the shaft.

 

[wingster51]

not an oring. in the parts diagram there is a washer on the upper end of the water tube where it goes into the powerhead. it is part 72 on the diagram 1995 25hp j25teleor

 

[Joe Reeves]

Yeah, I checked that washer question out some time back and was astonished that it was no longer available... checked my remaining stock... no such luck. I assume that you're fairly well knowledgeable of its thickness and diameter/hole size, and if so... if it were me (and nobody on this board or distant dealerships have one on their shelves)... I'd look for a piece of flat rubber sheet (yeah, somebody makes that stuff... hardware store, hobby shop, something comparable to rubber?) and make my own.

 

[wingster51]

I wish i knew the dimensions and i would do just that. I emailed brp and asked them for dimensions. I know they dont make johnson but that is the same part used in evinrude also. They are not sending a very good message to potential buyers.

 

[Joe Reeves]

I have worked on more than one of these mo6ors.----Have never seen that washer.

Me neither as far as ever seeing that washer... BUT... in the books, it's there, part # 330658. I just scanned thru a Sierra book that I've had for quite some time that lists their numbers alongside of the OMC numbers with graphics of that 25hp dismantled w/pump... BUT... the OMC number of 330658 does not appear so that I can cross reference it.

 

[wingster51]

without something being up there the water tube just falls out. seems like it should be some kind of grommet but book calls for washer

 

[racerone]

Take the powerhead off to see where that washer goes.-----Then make one !

 

[wingster51]

Thats what I want to do but the seloc manual I have doesnt say where the bolts are or how many. I am not worried about removing things to get it off. I can see 2 bolts on the bottom and 2 nuts inside the lower cover. There has to be more than that. I have checked utube and there are now videos.

 

[racerone]

Perhaps look at the gasket then to see how many fasteners are there for the powerhead.----There are also holes for about 6 bolts ( 1/4" ) to hold exhaust tuner to the block.

 

[wingster51]

thats a great idea. I appreciate the tip

 

[wingster51]

Perhaps look at the gasket then to see how many fasteners are there for the powerhead.----There are also holes for about 6 bolts ( 1/4" ) to hold exhaust tuner to the block.

I looked at the diagram and it looks like four bolts for the powerhead and four for the inner exhaust tube. Looks like the inner exhaust tube will come out with the power head. It bolts on from the bottom up into the powerhead. I looked closely and lo and behold there is a rubber grommet in the exhaust tube that the water tube goes into. It is the same part as the grommet in the impeller housing so it should be easy to find.

What do you guys recommend using as gasket seal on the exhaust side. I dont think i want to use any sealer on the head gasket but tell me if I am thinking wrong. You guys have been a great help. Thank you so much.

 

[racerone]

???----Did you read post # 8 in your other tome on this issue ???

 

[wingster51]

I dont know what you mean by that.

 

[racerone]

The rubber grommet was mention in other thread !

 

[Joe Reeves]

without something being up there the water tube just falls out. seems like it should be some kind of grommet but book calls for washer

Aha!..... And there is (#302497 Upper Water Tube Grommet).... on a different page than the water tube. It is on the "Midsection" page and is pictured to be inserted in the forward portion of the exhaust tuning tube. What you saw come crumbling out (I betcha) was a crystallized grommet.

It may be a case of "not needing" the washer... perhaps the washer swelled and caused a restriction (or something). At any rate, all that's been used for a zillion years was the upper grommet which worked.... so if the techs at Bombardier don't acknowledge your question about the washer... they probably have no knowledge of its prior existence.

It looks like it may be a hellava job to install unless you have the long weird looking special tool... BUT... it can be done.

Frankly, I think the mention of that washer on the parts page graphic was a screw-up by the draftsman and was a part of a old Scott Attwater.

Let us know what you find..

 

[wingster51]

The rubber grommet was mention in other thread !

I didnt see that until i looked at the gasket at your suggestion. thanks. I just didnt know where to look for it. your input is much appreciated

 

[racerone]

It takes time to learn on your own I would say.