Okay, I know that most of you will recommend that I just go buy a new fuel pump. And I also know that ultimately I will probably end up doing just that. But you should know that I am far too cheap and stubborn to give up so soon. Besides, this is a REPAIR forum, right? I don't just want to run out and buy a new one - that is how my wife solves problems! I'd rather attempt a fix and squeeze the primer bulb all the way home if things go south on me.
Now that we have an understanding, let me outline my issue and pose a question to you. As most of you know, the smaller Evinrude's rely on a fuel pump which works by a diaphragm and couple of spring valves to siphon fuel to the carburetor. If you are having fuel pump problems you may decide to get the "fuel pump repair kit." However, this kit only contains a new diaphragm and a few gaskets. So if your problem is with the pesky spring valves you will have just wasted your time and money.
The spring valves aren't very complicated, and yet they seem to be engineered to fail. I'd bet that spring valve problems are more frequent than diaphragm problems, which makes the "fuel pump repair kit" somewhat of a hoax. The weak link is the retainer ring which holds the spring in place. As far as I can tell, this ring is held in place by four little tabs. On my fuel pump (which sits on a 9.9 hp 4-stroke) the retainer rings had popped off both spring valves. I was able to put one of them back together, but the other has a few of those tabs missing, and as a result, will not stay in place. See photo below.
Now I made a mistake last night in this forum by begging for one of your old junk Johnson/Evinrude fuel pumps in order to harvest the retainer ring to fix my problem. However, the purpose of this forum is to educate and not to beg, so my post disappeared. I am posting now in hopes of educating others about the problems that may lurk in their fuel pumps that can't be fixed with the OMC repair kit. I also wanted to know if there is a gas resistant adhesive that I could use to glue these rings in place.
Lastly, if you see a guy off the coast of San Diego in a RIB pumping the primer bulb to get home, don't tell my wife.
Now that we have an understanding, let me outline my issue and pose a question to you. As most of you know, the smaller Evinrude's rely on a fuel pump which works by a diaphragm and couple of spring valves to siphon fuel to the carburetor. If you are having fuel pump problems you may decide to get the "fuel pump repair kit." However, this kit only contains a new diaphragm and a few gaskets. So if your problem is with the pesky spring valves you will have just wasted your time and money.
The spring valves aren't very complicated, and yet they seem to be engineered to fail. I'd bet that spring valve problems are more frequent than diaphragm problems, which makes the "fuel pump repair kit" somewhat of a hoax. The weak link is the retainer ring which holds the spring in place. As far as I can tell, this ring is held in place by four little tabs. On my fuel pump (which sits on a 9.9 hp 4-stroke) the retainer rings had popped off both spring valves. I was able to put one of them back together, but the other has a few of those tabs missing, and as a result, will not stay in place. See photo below.
Now I made a mistake last night in this forum by begging for one of your old junk Johnson/Evinrude fuel pumps in order to harvest the retainer ring to fix my problem. However, the purpose of this forum is to educate and not to beg, so my post disappeared. I am posting now in hopes of educating others about the problems that may lurk in their fuel pumps that can't be fixed with the OMC repair kit. I also wanted to know if there is a gas resistant adhesive that I could use to glue these rings in place.
Lastly, if you see a guy off the coast of San Diego in a RIB pumping the primer bulb to get home, don't tell my wife.
