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Help with Johnson 4hp carb

8K views 11 replies 7 participants last post by  euvoip21 
#1 ·
Well yesterday I picked up a new toy

Its a Johnson 2stroke 4hp and it runs on both cylinders and the water pump works great... I paid 75$ for it :D Very happy

The only thing is, there seems to be a string that is connected to a rod on the side of the carb.. When I pull this the engine rev's louder//

Wondering if someone knows what this is for?

Since the choke and Mixture knobs are on the front, I dont know what this could be

Happy Holidays/New Year

Adam



 
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#3 ·
THe THrottle is on the housing, and when i advance it the engine rev's up but when I pull the string it causes the motor to run even higher than I can attain while only using the throttle on the engine
 
#6 ·
The linkage connections are missing, at least from what I can see. It appears as if someone jury-rigged the linkage with a length of string. The spring is a return spring, which is used for slowing the boat down. You should be able to find a repair manual on line, and it will have a parts list with OMC numbers, which back then were the same for Johnson and Evinrude.

Good Luck,

Gary :cool:
 
#7 ·
.....

Hmmm, so i am missing a piece in the throttke linkage...

Maybe i can use it like the PO did

or

Does anyone know EXACTLY which piece(s) i am missing?

Going to try and post better pics....

Thank you
 
#11 ·
There are lots of repair shops that specialize in older outboards. The best one in Maryland used to be located on Ritchie Highway, but I haven't been down that highway for years, so I'm not sure if they are still in business.

The other one I knew of was previously known as Imperial Marine on U.S. Route 40 in White Marsh, MD. They had an incredible service department until a few years ago, and they had a service manager who really knows older outboards. When they sold out to Marine Max he retired, but they may still work on these older engines.

Cheers,

Gary
 
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