I have a 15 hp Evinrude 4 stroke that is not wanting to start up. I have used it once this year with no problems at all. It has always been a one or two pull start for me, but now won't turn over. I took apart the gas line that seats between the spark plugs on the motor and the gas came through the fuel pump to that point no problem. I then took the plug out and touched it to the side of the block while I pulled it over and had spark. After squeezing the primer bulb a few times and pulling it over once, I pulled the plugs and found they were dry.
I'm a newbie and really am not sure where to go from here.
Any advice would be greatly appreciated as it seems impossible to find a cutaway diagram for my motor online.
You didn't say what year your motor is, but I suspect it probably looks pretty close to my 1996 9.9 4-stroke motor. Look at the picture below ... and remove the plug where the arrow is pointing ... and see if gas comes out, and if it's clean!
Lots of sites have exploded part diagrams ... give us the model # from the transom plate!
If you pumped the primer bulb with the plug out, and you didn't get any gas pouring out the hole, then there's got to be a blockage between the primer bulb and the carburetor ... or the needle valve in the carburetor is stuck in a closed position, preventing gas from filling the bowl.
Take the fuel line off the carburetor ... and pump the bulb. If you get a flow of gas, then the problem's with the needle valve. If you still get no gas coming from the fuel line, then there's a blockage upstream ... most likely the filter screen in the fuel pump.
You'll need to remove the carburetor to get to it ... it's connected to the float inside the bowl. If you're mechanically inclined, it's not terribly hard to remove and repair. Generally, most folks buy a rebuild kit and replace all the included parts after cleaning the whole carburetor ... but you can buy just the valve and seat (part #20).
Here's a diagram from the web site I posted earlier ...
I took the carb off and gave it a quick clean as a hope that it would run until I can get a rebuild kit and it worked. She started like a charm 5 times in a row.
Now I have a new problem. I realized that the little spout where water runs out after being drawn from the bottom isn't spouting any water. I had the muffs on with a full blast of water running through the hose. I suck and blew on it, as I have had them plug up before before and it was always an easy fix.
Who wants to tackle this one?? Should I be typing this up as a new post?
You might try cutting length of string trimmer line (like 18") .... and feed that in from the outside. Hopefully, you've just got a temporary blockage that you can clear, and not a failed water pump!
Looks like a failed water pump. I took the 6 bolts out that were holding the lower end to the top piece and can't seem to figure out how to get it off to get to my impeller. I have an old '65 65 hp Mercury that I have done this before on, but obviously it eludes me. Any help out there?
Evinrude 15 hp 4 stroke problems
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