hose connection

rooster1

Seaman
Joined
Jun 14, 2007
Messages
54
where is the ser # on my johnson? theres a silver tag on the top with a seahorse with some numbers i think its in the 60s or 50s its burgandy and white also the fuel hookup has three prongs at walmart all they had were two prongs it hooked up but when i pumped it i could hear air coming out also the prong that dosent have anything hooked up said air
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: hose connection

rooster, under the front of the motor between the transom clamp, should be a plate with model and serial number. post those and i can tell you exactly what you have. by the color it is a 1950's. i love them. you cannot run the motor on the single hose tank, it requires a 2 line pressure tank, the tank has a 3 prong connector. clip to hold it, gas and air. the tank has a primer button on top, that you pump up, this forces gas to the carborator, the engine does not have a conventional fuel pump. the engine forces air into the tank, which forces gas to the carb. it is possible to convert some of the engine to a conventional fuel pump, i just did it to my 1958 35 hp Johnson. but you need to know you have a viable motor before, doing anything.

you need to check the compression and spark on the motor, also you can, mix fuel/oil 24/1 and put in a spray or squeeze bottle and spray into the carbs to see if it will run. the lower leg of the engine has to be submerged in water 1/2 up, in order not to damage the lower unit. i use a large trash can for this with a substancial mount or the back of the boat.

get back with the info i asked for, and do the compression and spark check.
if it a viable engine we will get it revived.
 
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