Johnson 28 SPL

[Jmelford]

I am new to boating and have a 1990 Johnson 28 SPL motor and want to know where to hook up the water hose so I can run it at home. Can I use the muff device the mounts on the side or do I have to use a device that connects to the hole just above the prop? The holes in the side don't look large enough to allow much water flow. Thanks! Jmelford

 

[Daviet]

Re: Johnson 28 SPL

The best way is to slip a trash can under the lower unit and fill it with water, make make sure the water level is well above the water pump.

 

[Jmelford]

Re: Johnson 28 SPL

Thanks! I know that was how it use to be done and that was how I was going to test it, but my neighbor said that the water gets too hot too quickly and not to use a trash can.

 

[Daviet]

Re: Johnson 28 SPL

That's about the only way I run engines, on a hose the pressure will bypass the water pump and not tell you if the water pump is working. I use about a 30 gal trash can, you can let the hose run at a low volume to keep cold water in the barrel. I have run a motor for quite awhile without any worries of overheating.