1967 Johnson 6 hp water pump

[revkab]

I have a '67 Johnson 6 hp that I purchased last summer. It worked pretty well, but I have heard that I should replace the water pump every so often. I have no idea when the last owner replaced last.

How do I go about replacing? Any giant booby-traps I need to watch out for?

Also, how do I go about changing the lower unit oil?

Ken

[ezeke]

First you need to buy a service manual. Right now, there are two on Ebay for 1967 6HP Evinrudes, which are the same motors as yours with different paint, decals and covers. Or, you can get a new one from one of several companies that sell them including maxrules .com, marineengine .com, kencook .com, and others.

Then you can get help here if you run into difficulty.

You might also find something that will help among the thousands of threads on this forum if you try the search function.

[HighTrim]

As Ezeke said, an OEM service manual will be your best friend, and will pay for itself many times over.

Get a manual, read it over. Then this video may help before you start the waterpump.

"http://www.meegsonline.com/tmd/waterpump.wmv"

water pump.jpg

Changing the lu oil is a bit easier. To start you will need some oil and a pump. Recommended is 80-90 outboard gear oil, it has additives to protect the lower if you have water intrusion. Always replace the washer on the vent and drain screw, as this is the #1 cause of water intrusion. On the older electric shift motors, you need Premium Blend Type C for electric shift. Remove both the drain and vent screw, letting the oil drain. Install the new washers. Hook the pump up to the drain screw, and fill the gearcase until the oil starts to exit via the vent hole. Replace the vent screw, this will create a vaccuum, allowing you to remove the pump and install the drain screw. If the oil looks milky or white, let us know, that means there is water in the oil and further measures will need to be taken. Thats it, all done.

Here is the pump that was referred to, not necessary, but you will be thankful once you have it, or try the tube method first.

W-Johnson-lower-unit-oil-pump.jpg

lower unit oil diagram.jpg

[samo_ott]

Use the pump, it's worth it's weight in gold and only $10 up here at dealer. (at least when I bought it)

[revkab]

Thanks for all your help, guys. I am bidding on the manual on ebay, and will begin with that, keeping all your advice in the back of my mind (a vast, empty void).

One oar in the water, paddling like crazy, going nowhere in particular, but making great time doing it.

Ken