I have a 1974 15hp Evinrude that has developed a starting issue. For the first startup of the day, it takes upwards of 20 mins of pulling to get it going. Generally I finally get it started with no choke, just pulling constantly until I get it to sputter and finally to turn over. After I get it going once, it’s back to its normal self and starts on the first pull every time for the rest of the day. No issues with power or anything, runs very smooth at high or low rpms. I thought it was a fuel line issue, and replaced my primer bulb to no effect. Wondering if it’s a choke issue, seems like fuel delivery is the problem until the motor starts sucking on its own. Any ideas? Hesitant to rip open a carb or fuel pump if I don’t have to.
Evinrude 15hp starting problem
So I got to the cabin and finally had a chance to work on it. I was a bit disappointed to see that the choke switch was installed correctly, meaning that wasn’t going to be my easy fix. I ended up taking the air box off to verify that the choke was operating properly in the carb, and everything looked good. When I put the air box back on, I noticed it had instructions to press the air box tight to the carb before torquing the screws down, so I did that. Also pulled the fuel pump off to check the screen and that all looked good. Put it back together and got it started in a water tank on the tenth pull. Took it to the lake the next day and it started on second pull, and ran great all day. Not sure what the actual fix was but it’s back to its old self for now! We’ll see how it goes when I’m back up in a few weeks.
If interested you can get these parts from marine engine .com impellar ,condensors,points , gasket for carb with shipping about 70.00
I would put them in for 100.00 Dan 920 647 0027 Coloma,wi
Hey how long has it been since you put a set of points in it ? its 40 yrs old ,and when have yo cleaned the carb ?
Get it tuned up ,put seafoam in gas every fill and it should go like new ,iy wouldn't hurt to put a new water pump in it also
Always run the gas out of it every time you run the motor , or at least use sea foam in the tank and that will keep the fuel system clean. Those older evinrude two strokes do not like ethanol based fuels and will cause starting and running issues every time
My smaller Evinrude (6 hp ) has to have it run dry at the end of the day , or its a beast to start next time . Plus it always fires on first pull , then dies . Then choke halfway and it's good . Mid 1970s .
The motor is at the cabin in Mercer, I’ll update after I fix it over labor day
Any update Edward - I'm interested!
I bet that is it Edward! Also, the choke knob fits into a stainless retaining clip - it shouldn’t fall out.
It’s super easy to put it in upside down, you have to pay really close attention to it.
I have the same motor, and the EXACT same problem. If you find an issue or solution please update us. I have subscribed to this thread.
Similar issue with a 15 hp evinrude. Found a shot of starting fluid in the air intake after a couple pulls will get it to fire. No issues after that.