1975 Johnson 85hp waterpump questions

[1976evinrude]

Hey guys just have a couple of questions on the water and around it. To start when I removed the water pump housing the impeller was stuck on the shaft so i had to cut it off and chisel it, this wasnt a big deal but my questions were when installing the new impeller what ways do the fins go inside the housing, how do I install it so that the fins end up the right way? My other two questions were on the gear case diagram for this engine it shows that there are guides that attach to the water pump housing that go onto the two copper tubes and I couldnt find them anywhere. Are they needed or should I buy them? My last question was next to the water pump housing there is another housing with the shift rod going into , knowing my I got curious and decided to pop the 4 bolts off that one and see whats inside but when the casing popped off oil came out and spilled over is this the oil from the lower gear case? howd it get that high when the upper fill plug is below it? Im guessing I also have to replace that seal now since I opened it up.
This might be hard to understand but It would help clear up alot of parts im confused about in the lower unit!

Thanks!!

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

Water pump and around it*

 

[MWG2600]

Re: 1975 Johnson 85hp waterpump questions

The drive shaft turns clockwise, turn it clockwise wile pushing the water pump housing on, the vanes bend onto the housing. As for the cover you took off Pics would help i havent seen one of those engines.

 

[emdsapmgr]

Re: 1975 Johnson 85hp waterpump questions

You have been given the correct procedure to install the impeller in the housing. (Regardless of how you put the impeller in the housing, the impeller vanes will automatically straighten out internally as soon as you crank the engine.) Helpful to use a little Vaselene grease on the vanes during installation. You removed the cover for the shift rod. The oil is from the gearcase. You'll have to refill the case before you run the engine. When you took that cover off, you may have removed (unscrewed) the shift rod. That shift rod must be set to a specific measured height before the lower unit is reinstalled in the midsection in order for it to shift correctly. See your factory manual for the measurement points and the exact inches of height.

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

Okay thats good to know about the impeller. Howd the oil get that high where the shift rod is? The upper fill screw is below it?
As for the shift rod height im not sure how to measure or even adjust it. I never got a manuel either even though I shoudve. Can you help me find the shift rod height and how to measure it?
Thanks

 

[kfa4303]

Re: 1975 Johnson 85hp waterpump questions

Here's a pic of how the impeller vanes should be oriented, but emd is right, they generally assume the correct orientation once the motor turns over. Ditto on using a bit of vaseline. It really helps the impeller fit into the housing nicely.

 

[emdsapmgr]

Re: 1975 Johnson 85hp waterpump questions

You'll need someone who has a 1975 V4 factory manual to look up the correct height of the shift rod. If you plan to keep the engine and do most of the maintenance on it under your ownership, you might consider purchasing an original copy. See Outboardbooks.com on the web, or call Ken Cook Co., in Milwaukee 414-466-6060.

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

Thanks for the great info! Im still puzzled on how the gear case oil got higher then the upper fill screw though because when filling with oil I thought you fill it until it leaks out of the upper fill hole. I guess im just thinking there would be an air pocket or something if you get what im trying to say. Maybe somone has some insight on this. As for the shift rod adjustment I really wouldnt be able to afford the manual right now as im very tight on money. Maybe someone on heres has or knows the shift rod height for my engine.
Thanks!

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

Should the shift rod be able to move up and down with ease to shift between gears?

 

[kfa4303]

Re: 1975 Johnson 85hp waterpump questions

yes. by pulling up firmly on the shift rod you should put the lower unit into FWD. You can check by rotating the drive shaft CLOCKWISE by hand (maybe two hands for that big motor). If FWD is properly engaged, you should see the prop start to spin clockwise also. By pushing the rod down all the way, you put it into REV. Test by turning the drive shaft clockwise by hand as before, only this time the prop should turn counter-clockwise (that's anti-clockwise to the Brits ). Neutral is obviously in between these two positions, but can be tested similarly, only there should be not be any rotation of the prop as the drive shaft is again turned clockwise. I'm not sure about the oil either. Perhaps it's really just unburnt exhaust. This link may be of some use too. Just click on your model number for a complete parts catalog and exploded diagrams.

http://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1975&hp=85

 

[ezmobee]

Re: 1975 Johnson 85hp waterpump questions

Here's your manual http://www.ebay.com/itm/1975-Johnso...anuals_Literature&vxp=mtr&hash=item33703b8d71 it's a steal at that price. I'd jump on it if you want to do any service work on this motor yourself. The OEM manuals are awesome.

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

Thanks! Ill probably buy it soon. The lower unit is from a 1975 johnson 85hp and its going on a 1976 evinrude 85hp do you think the manuels are identical ? The manual for the evinrude is much cheaper found on ebay for 15$. Are they the same manuals just different covers because i think these engines are identical

 

[ezmobee]

Re: 1975 Johnson 85hp waterpump questions

Yeah, I'd buy this one http://www.ebay.com/itm/1976-Evinru...anuals_Literature&vxp=mtr&hash=item4ab3170141

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

Looking into to it, Quick question is there supposed to be a big black seal that goes underneith the waterpump around the plate? Is it needed because when I tore this one down it was no where to be seen. Also when taking off the lower unit a small o ring fell off of something any ideas of where this goes?
Thanks!

 

[ezmobee]

Re: 1975 Johnson 85hp waterpump questions

there's a spaghetti seal around the water pump housing. The o-ring might be the one that goes on the drive shaft that helps hold grease up in the splines.

 

[1976evinrude]

Re: 1975 Johnson 85hp waterpump questions

The one that was on there must have deterioated because its no where to be seen