Johnson Recent Questions, Troubleshooting Help & Support

I use 1 quart per gallon of gas and put an ounce of seafoam in the mix to keep fuel and carb clean and get rid of condensation.

no possible water pump impeller failure that is blocking the water flow to the head / block

Is it an original Johnson controller or a Morse or other make? Please add a picture...

Dwayne Johnson ***** Hoax

Hey BK, Its still the carburetor!.... take it to a qualified professional.. there are TOO many tiny passages and jets that must be perfectly clean for a small engine to run properly..

2 bank battery Minn Kota System wiring diagram Google Search Connecting dual bank charger to 24V trolling motor General Discussion... 2 bank battery Minn Kota System wiring diagram Google Search

Hey Johnny.. here is a site that has your parts.. Find 1974 Johnson 25R74M 25hp Outboard Motor Parts by Engine Section

Here is where you can get a service manual, they have a lot of info you might need... Johnson Evinrude Manuals 1917 2007

Get one of these,,, you, obviously, need one.. Johnson Evinrude Manuals 1917 2007

Are you wanting to disconnect the shift rod from the lower unit?? It just unscrews.. ..getting it screwed back in and set to the CORRECT HEIGHT is EXTREMELY IMPORTANT..(if you want to be able to shift and make the lower unit to last!) get one of these,, its invaluable!!! Johnson Evinrude Manuals 1917 2007

These guys can help you,, home

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1993 Johnson J150GLETG 150hp Outboard Motor Find 1993 Johnson J150GLETG 150hp Outboard Motor Parts by Engine Section

Hey Troy, get one of these... sounds like you might need it,,,they are invaluable!! Johnson Evinrude Manuals 1917 2007

You should have some water sprayt with exhaust gasses in the above water exhaust... There is no separate water pressure indicator like on newer motors.

You'll need a timing light and a testpropeller... ( it can be done sailing, but it's dangerous and you have to be 2 on board...) the maximum advance is 30°BTDC. The setting is made by the setscrew at the portside of the engine on a bracket just under the flywheel. Loosen the nut and turn te screw. 1 turn of the screw is 1° setting. Turn out to get MORE advance, turn in to get less advance. Retighten the nut after setting.

opppsss. where is the hole?

The fuel line from the tank to the engine may be collapsing as the pump demands more pressure! If you know someone with a fuel line with the same ends, ask to borrow it! If the problems goes away, invest in a new fuel line. When this engine was built ethanol was NOT being mixed into gasoline. Ethanol will melt some of the older fuel hoses (including those under the engine cover). Good luck!

Good luck trying to find a manual.... Can you be more specific as to what information you need, or what questions you need to be answered?

Are you talking about the ignition (key) switch?