Evinrude cooling help

[2mate]

Hi guys,
On my 1976 evinrude 40hp there is no cooling water coming from the leg. I have fitted a impeller to correct way, put a hose pipe on the water tube and water flows around the engine and out. The intake is clear. When it runs only a trickle of water comes out? No idea why this is. The water tube is correctly installed into the impeller housing and the wooddruff key is engaging.
Any ideas?

 

[Daviet]

Re: Evinrude cooling help

Are you testing this in the water or in a barrel. If in a barrel the water level has to be about 1/2 way up the exhaust housing.

 

[2mate]

Re: Evinrude cooling help

Hi there yes as far as i know the water is that high in the barrel!

 

[Daviet]

Re: Evinrude cooling help

If the water circulates through the block by putting a hose on the water tube, I would submerge the lower unit in a barrel of water and spin the drive shaft and see if the pump shoots water out of the output.

 

[2mate]

Re: Evinrude cooling help

Okay cheers il try that, what shall i do if it doesnt?

 

[Daviet]

Re: Evinrude cooling help

If it doesn't pump water by spinning the shaft while the lower unit is submerged, you have a pump problem.

 

[2mate]

Re: Evinrude cooling help

Hi there, just put the lower unit in a bucket of water and spun the drive shaft, no water came out. What now?

 

[Haffiman]

Re: Evinrude cooling help

Did you spin it clockwise?
The best is to put it with water level above the pump and a piece of plastic tube/hose or whatever in the pump-outlet.
Just watch out so you do not drown your power drill!!!!

 

[2mate]

Re: Evinrude cooling help

I didnt use a drill :s How would i attack a drill to it?

 

[Haffiman]

Re: Evinrude cooling help

A couple of ways:
1: If you have a socket that fits on the spline, then a bolt in the square of the socket.
2: Clamp a solid rubber hose on the shaft, a bolt inside the hose on top that fits into yous chuck.

It needs to spin a couple of hundreds rpm's.