impeller installation on evinrude outboard

[cntryby493]

Hi eveyone im new to this site.I own a 1984 70hp Evinrude.It hasnt been out on the water since 2003.I have been doing alot of interior work on it and have redone the whole inside.It took me a while cause i took my time doing it all right the first time.As far as the motor i fired her up an she ran great considering she hadnt been ran in a long time.My concern is the impeller in the inside of it.Im worried that it might need to be replaced.It pumped water out ok when i had the suction cup ears hooked up to the bottom part of the motor.I thought it could have done a little better but as long as it was pumping water out i felt ok.So i think i have decided to replace it myself but need to know if it is a difficult task an want to know if someone can help me out on doing this procedure here.My local marina shops want a little bit to much for this if you ask me in my opinion.So if anyone can give any feed back it will be gladly appreciated. Also is it ok to run 93 octane for the motor?

 

[Rudy Brown]

Re: impeller installation on evinrude outboard

Hello. Everyone here is gonna tell you to get a manual. The waterpump install isnt hard, just "involved". Took me about 2 hours the first time to do it.

 

[cntryby493]

Re: impeller installation on evinrude outboard

ok thanks for the info.

 

[Big Keepers]

Re: impeller installation on evinrude outboard

No reason to put anything other than 87 octane unless you feel a little rough running. Then maybe try 89. If you use 87 octane, stabilize the gas and run the boat often so the fuel doesn't sit, you'll have no problem in that department. So long as water doesn't mix with the gas and cause the ethanol to phase out. That's another topic for another thread though.

You'll want to get a manual even if its a Seloc or other aftermarket manual. The pictures are worth a thousand posts when you are sitting there doing the install. You will want to make a mental picture, or better yet, take digital pictures of the pump as you disassemble it so you can see what it looked like when you assemble the new one. Take your time, make sure the impeller is seated correctly and the blades are bent in the proper direction. The woodruff key gave me fits I remember when I did mine. Something about how the impeller fit on it, only one direction so it seats correctly. Again look at what you take apart and remember, write it down, take a picture. Whatever you need to do.

The pump kit usually has vague directions but I prefer a manual.

 

[cntryby493]

Re: impeller installation on evinrude outboard

thanks man i appreciate the feed back.dont know much about marine out board motors but im sure i can work on them just as good as i do on my truck.doesnt look like its to complicated of a motor to work on.i bet if i had that manual it would help out alot.do have to have certain tools when disassembling the bottom part of the motor?Also do you have to becareful when lining the shaft back up too so everything fits back perfectly?

 

[Rudy Brown]

Re: impeller installation on evinrude outboard

cntryby493, I sent ya a PM.

 

[Silvertip]

Re: impeller installation on evinrude outboard

Alkthough buying an engine-specific service manual is a good investment, if you don't want to buy a service one, check your local library. They may not have the exact manual for your engine but one that's close is better than none at all. A great deal of "technical" knowledge is not required for this process -- just patience. Remove the bolts that secure the lower unit to the mid section of the engine. There is one bolt located under the trim tab. Most first timers overlook that one. Then they wonder why the lower unit only drops about 1/2 inch. That's because they also overlook the fact that the shift rod needs to be disconnected. This is done under the bottom carb. Whiile it takes a little time, removing the lower cowl of the engine allows much easier access to this linkage. Now you can drop the lower unit off. The rest is easy. If the impeller is stuck to the shaft, cut it between the fins with a Dremel tool. Use a soapy mixture to lub the impeller when installing it.

 

[Turin]

Re: impeller installation on evinrude outboard

No reason to put anything other than 87 octane unless you feel a little rough running. Then maybe try 89. If you use 87 octane, stabilize the gas and run the boat often so the fuel doesn't sit, you'll have no problem in that department. So long as water doesn't mix with the gas and cause the ethanol to phase out. That's another topic for another thread though.

.

Where do you use 87 89 octane fuel for.?
Isnt the octane level way to low.
For outboards mine has written on the tank to use atleast 90 Octane

It aint even sold here in Holland no car will run on it here.
the lowest octane sold here is 90.(I use this for my boat becouse its cheeper than 95)
My car runs on 95
Isnt the octane level way to low. for European or Japaneese cars?

 

[F_R]

Re: impeller installation on evinrude outboard

You probably have a different method of rating the octane in Europe. That would be my guess, anyhow. Here is US we rate ours as the average of two methods. research + motor /2 (or something like that)

 

[Big Keepers]

Re: impeller installation on evinrude outboard

Yes the (R+M)/2 method to determine the octane rating of gasoline. If your tank and manufacturer say 90 octane, use 90. Do you have the E-80 gas in Holland? Mostly an ethanol mix and very little octane or heptane? We have E-10 gas here in the US now, pretty much across the 50 states. That's 10% ethanol by volume.