Johnson 1930 model A 50 4hp

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chuck86
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Joined: Mon Aug 14, 2017 6:38 pm

Johnson 1930 model A 50 4hp

Postby chuck86 » Fri Jan 19, 2018 3:24 pm

Just bought this motor - started on third pull - problem it did not pump pump water -
Where does it come out?
Also need guidance on what to do. Take off lower unit?

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Richard A. White
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Re: Johnson 1930 model A 50 4hp

Postby Richard A. White » Fri Jan 19, 2018 3:28 pm

Well first off, it will never "pump" water as that particular motor, I believe, uses the vacuum/pressure type cooling system. Motor almost has to be moving in water for it to get water into the system.

Richard A. White
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SquierKA39
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Re: Johnson 1930 model A 50 4hp

Postby SquierKA39 » Fri Jan 19, 2018 5:09 pm

Richard is correct, no pump on the A-50. It won’t pump water in a tank it need forward thrust to get the water flowing thru the motor. Once it’s flowing on a moving boat with the vacu siphon system you can slow down and it will still pump the water thru. Started right up, sounds like you got a good one.


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