old johson 5 hp

[big roll]

were is the cooling impeller i dont know what year but the gas tank is on top any pic would be helpful

 

[tmcalavy]

Re: old johson 5 hp

We need a model number or photo to figure out what you have and tell you how to proceed.

 

[Mas]

Re: old johson 5 hp

Look for possibly a "TN" number stamped on the motor.

MAS

 

[Rick.]

Re: old johson 5 hp

All impellers will be located on the top of the leg. You will need drop the leg and the water pump will be obvious. Rick.

 

[TN-25]

Re: old johson 5 hp

It sounds like you may have an old 1941 ? 1953 Johnson 5. The TD (& rare TS with exposed starter sheave) had the water pump & impeller mounted down low in front of the propeller and rotated by the prop shaft. You will actually see that there is a removable section there. See TD_legend below.

For 1950 Johnson added a neutral capability onto the TD. It was now known as the TN. It is easy to spot the difference between the TD & TN by the neutral lever up top beside the starter handle. Since it was possible to have the motor running without the prop shaft turning (i.e. neutral), the water pump had to move from the prop shaft to a spot above the neutral clutch. At that time they also switched to the variable volume pump that had the flexible rubber blades. See TN_legend below.


These impellers on the TNs are similar to the common impeller used on the later 3, 4, 5?, 6, 7? etc. but need to be modified slightly. Check out this useful link: http://hoodad.fortunecity.com/index2.html.

Better yet, click on the link for the TN water pump replacement (I'll take you there: http://hoodad.fortunecity.com/tnlowerunit.html )

 

[freddyray21]

Re: old johson 5 hp

All impellers will be located on the top of the leg. You will need drop the leg and the water pump will be obvious. Rick.

not all. If he has the motor TN-25 thinks he has it really doesn't have an impeller per se, but a rotor type impeller which runs off an eccentric behind the prop. Very easy to change and no need to drop the lower unit. A lot of the mercs back then had impellers behind the prop as well.

 

[tashasdaddy]

Re: old johson 5 hp

Very true^^^^^^^

 

[Mas]

Re: old johson 5 hp

any pic would be helpful

Yes, A pic would be helpful to help you...any chance of getting one of your motor to ID year?

 

[big roll]

Re: old johson 5 hp

the #s on the motor are 1063459 and below that its tn 28 thanks for all your help this web sight is cool one more question are these old motors worth anything thanks big roll

 

[Rick.]

Re: old johson 5 hp

My apology. I should learn to never say never. My idea of "old" takes me into the 60's and 79's motors. Rick.