1991 25 hp. johnson hard to start , floods easy

Here are the parts schematics, but you need the proper engine model number. The best way is to go to a local Johnson outboard dealer as they will has all the diagrams

https://www.google.com/search?q=1992+johnson+70+hp+parts+schematic

That tube has a common name, but this website's profanity filter will probably not allow it. replace the two '**' in this Google search link with 'ee'.

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Ni$$le 0321885 - Evinrude & Johnson, OMC

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Johnson 70 hp. Repair Difficulty: Easy; Repair Time: Less than 30 mins. Promptly shipped what I ordered. 7 months ...
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No oil in the oil filter period?? Does the opening of the oil filter face down.. like the oil will drain out if sitting still?
..You need to talk to a qualified professional.. this could be very serious or SOP..

Assuming you have compression in cylinders, it's either fuel or spark. Smell gas? If so it's flooded, Try starting w/o choke. Wait ten minutes and try again. Next check and examine the spark plugs. Best to change them. Are they wet? If so you are getting fuel. Then it's spark. May need service for that unless you are a mechanic.

You should let the old fuel out and get some new fuel. If it has a set of points for the spark timing make sure they are clean and don't have a spike. Make sure the air filter is clean. You may have flooded it or maybe the other way, not enough fuel. You can clear the flooding by taking the spark plug out and cranking it to blow out the cylinder.

The biggest problem is the internal bearings. On an outboard, they are all roller and/or ball bearings. If the pistons stick it is not as big a problem as rusty bearings. It sounds like you have some great compression. (hard to pull with the plugs in). I recommend you visit with a local dealer who is familiar with this older model. A little care in getting it restarted (carb, fuel pump, water pump impeller) can help resurrect the motor. Also if they know these motors the can assess the internals without disassembly. It may need a tear down but without knowing more it is hard to say. I live in south Florida.

You have got to be kidding. There is hardly any wiring on a 1957 Johnson. If it is not electric start look at a 1972 6 hp, same wiring.

could be the choke isn't closed all the way for the first start. Then when warm the motor doesn't need to be choked.

Ihave a 1991 70 hp Johnson outboard thats hard to start the first time but starts good after that. Seems to be flooded. Starting rpm seems to be low.

Hi, You did a good job of assessing the problem. It sounds like the float valve in the carb is the likely problem. This would overfill the carb when sitting, flooding the engine and the pressure in the bulb pump would go down as the fuel leaked out. Float valve should be investigated and that should Fixya!