1975 100 evinrude model100193

[powerstroker]

how to know if my water pump is working on my outboard? where is the water inlets and where is the water outlets?

 

[Daviet]

Re: 1975 100 evinrude model100193

The intakes are on the lower unit, grooves on each side. You should see some water coming out of the exhaust ports on the exhaust housing. If you are running on a hose you wil only get water out around the prop. In the water you should get misting out of the exhaust ports.
Your engine does not have a tell-tale, water indicator, but you can install one. Just run a seach, it has been discussed in several posts.

 

[powerstroker]

Re: 1975 100 evinrude model100193

by the exhaust ports are u talking the two holes just under the cover towards the rear of the boat? i cant really tell if i got water coming out of the prop or not also it has ports just above where the dolphin fin goes what r they for?

 

[Daviet]

Re: 1975 100 evinrude model100193

Yes, the ports are the two holes just below the cover in the rear. Those are also ports where the water will come out.

 

[powerstroker]

Re: 1975 100 evinrude model100193

thank u i had a 105 chrysler on my boat and it was weak had like 50 psi compression on all cylinders so i switched to this motor i just hope i didnt make a mistake whats ur opinion?

 

[Daviet]

Re: 1975 100 evinrude model100193

I have never had one of those, but I can't seem to remember seeing anything bad that the engine is prone to. I have installed a tell-tale on every engine I have had that didn't have one, I like to see what the water pump is doing. Preform the normal maintaince and I would think you should be OK.

 

[dazk14]

Re: 1975 100 evinrude model100193

Your motor - based on model # supplied - is a 1971. If it is running well, enjoy. Many of those motors are still running well today.

Spark and electric shift lower unit are the weak links.

Misting out the exhaust ports at idle - as mentioned - is it's tell tale. They'll pump out much more (out ports) when running on plane.