1970 40hp Johnson water pump problem

[sparrott]

I have a 1970 Johnson 40 horse and im not sure the water pump is working. Can anyone tell me where the water will pump out of to check thanks

 

[SparkieBoat]

Re: 1970 40hp Johnson water pump problem

drop the gear case, water pump is at the base of the drive shaft.

 

[smevil]

Re: 1970 40hp Johnson water pump problem

New to this, but have been trouble shooting 1970 evinrude 40 horse for last 2 weeks which I believe is the same engine, and got it back on-line with out spending allot . Just taking things apart cleaning and re-installing, Either way we ran our motor in a large bucket and did not see alot of water coming out, first I believe there to be a thermostat this needs to come to temp before opening, allowing more water to escape out the hole just below the top cowling facing aft. Also a heads up I got a bit of oil in my bucket this concerned me but after talking to the peeps here, they informed me this is normal for our engines, but I still had concerns and water flow through the engine, so to ease my concerns I got the water pump rebuild kit for 28.00 vs. just impeller for 21.00 and changed tho feather seal and o-ring + seals in about an hour first time doing it. This made me feel alot better knowing this is done.

 

[SparkieBoat]

Re: 1970 40hp Johnson water pump problem

I put a new impeller in every motor I get and then change them every few years..they can last a long time..but it only takes one good overheat to ruin your motor..change the gear oil and t-stat also.

 

[sparrott]

Re: 1970 40hp Johnson water pump problem

what hole will the water pump out of if the water pump is working? there is the big hole and right below it 2 small holes or will it come out toward the bottom of the lower unit?

 

[Wolf86]

Re: 1970 40hp Johnson water pump problem

It's the hole on the back, about right in the middle.
Check out this video I found on youtube which shows the motor in operation:
http://www.youtube.com/watch?v=Y0uurBGaspA

 

[sparrott]

Re: 1970 40hp Johnson water pump problem

ok i took it out for first time today and it was pumping but i thought it was weak but after watching video i think it is good. thanks for the help and video

 

[rrotzetter]

Re: 1970 40hp Johnson water pump problem

New to this, but have been trouble shooting 1970 evinrude 40 horse for last 2 weeks which I believe is the same engine, and got it back on-line with out spending allot . Just taking things apart cleaning and re-installing, Either way we ran our motor in a large bucket and did not see alot of water coming out, first I believe there to be a thermostat this needs to come to temp before opening, allowing more water to escape out the hole just below the top cowling facing aft. Also a heads up I got a bit of oil in my bucket this concerned me but after talking to the peeps here, they informed me this is normal for our engines, but I still had concerns and water flow through the engine, so to ease my concerns I got the water pump rebuild kit for 28.00 vs. just impeller for 21.00 and changed tho feather seal and o-ring + seals in about an hour first time doing it. This made me feel alot better knowing this is done.

so im encountering the same problem and i have talked to the local marina, they seem to think its impossible to get parts for my 1968 40hp johnson, if so were can i find them?
thanks

 

[geoffwga1]

Re: 1970 40hp Johnson water pump problem

They are talking through their hat.You can get most bits right here at i- boats,If they don't have themmthere are plenty of other places,not counting ebay.Just google "outboard parts".
Geoffwga1

 

[oldybutagoody]

Re: 1970 40hp Johnson water pump problem

iboats.com
marineengines.com
seawaymarine.com

so im encountering the same problem and i have talked to the local marina, they seem to think its impossible to get parts for my 1968 40hp johnson, if so were can i find them?
thanks