1974 85hp Evinrude water pump

twgoff

Recruit
Joined
Jul 5, 2007
Messages
2
I have a 1974 85hp Evinrude that does not seem to have a **** tube to tell if the water pump is working. I can not find anywhere on the block, heads or body of the lower cowan where one would be. Does any one know if this engine had one and if it did not, how I could tell if the water pump is working.
 

hoeser

Petty Officer 1st Class
Joined
Jun 18, 2006
Messages
253
Re: 1974 85hp Evinrude water pump

Some years had the overboard indicator others did not... yours probably didn't. If there is no hole in the cowling you probably don't have one.

There should be a fair amount of water coming out of your exhaust pressure relief ports at idle and even more at speed... keep in mind when you initially start the engine it may take a second for the midsection to fill with water before it starts spitting out the relief ports. If you are at all in doubt of your water impeller or it hasn't been changed within the last 3 years you should replace it.
 

burroak

Senior Chief Petty Officer
Joined
Mar 29, 2007
Messages
651
Re: 1974 85hp Evinrude water pump

For the 1/8" tapered pipe thread tap, it requires a finished pilot hole using a letter R drill bit.
 
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