1972 Evinrude, 2HP Misc questions

[Jonathan Burnett]

I have an '72 Evinrude Model 2202 M -E04388. This outboard motor has very few hours on it, (the paint on the prop is hardly warn)I am the second owner.<br /><br />Some history:<br />I acquired this outboard from my brother in 1994. He bought it second hand from someone in the 1980's. I used it several times with out problem. In 1998 the engine started and ran well but after about 40 minutes of operation the engine would slow down and then quit. After waiting for about 15 minutes the engine could be started again and would run well, for about 40 minutes and then stop. Actually the engine ran like this for a whole weekend. The Fuel tank had adequate fuel. The fuel vent was open. Cooling water was coming out the tell-tail holes and was not overly warm. <br /><br />Now the present problem:<br />I can not start the engine.<br /><br />There is good spark.<br /><br />I have taken the carb apart and cleaned, (with carb cleaner,) all the parts and put it back together, (The old parts, gaskets and seals seem good. I did not put a new kit back in. Fuel is getting to the bowl and is not overflowing the jets are clean.<br /><br />The cylinder compression is 65 psi.<br /><br />If I spray Fuel into the intake from an oil can, the engine runs for a short time.<br /><br />I am sure that I need a new impeller. Do I need to just change the impeller or should I put in a water pump kit?<br /><br />I think the cylinder compression is low. What should it be? Does it sound like the engine needs rings? The cylinder is not scored at all. <br /><br />The intake reed valves seem to be in good shape, not bent or corroded.<br /><br />When I put the engine back together, I had a part left over. This is a flat stainless steel part about 1.5 inches long. I think that it is secured by one of the bolts that secures the top recoil housing to the frame around the engine but I don't know what it does or which bolt it is attached with. Any Ideas?<br /><br />Thank you for your help.

 

[JB]

Re: 1972 Evinrude, 2HP Misc questions

Hmmm. Several points, DBI.<br /><br />Engine is fuel starved. Probably the filter that fits into the fuel tank above the fuel valve, the valve, the line to the carb or the carb itself is gummed up.<br /><br />"Runs 30-40 minutes, then quits, restarts after rest period" could be a fuel tank venting or draining problem (that same little filter?). Could also be inadequate cooling. The impeller has a maximum reliable life of 2 years regardless of usage.<br /><br />You need a Repair Manual. Even the best wrenches wont touch an unfamiliar task without one.<br /><br />Good luck.

 

[Jonathan Burnett]

Re: 1972 Evinrude, 2HP Misc questions

Thank you JB.<br /><br />In reply to your suggestions, There is no fuel filter in the system. I think there should be. The system doesn't seem to be designed for one. Any ideas about adding one other than an in-line filter?<br /><br />The fuel system is very clean, no gum or varnish any place. The carb is not starved for fuel.<br /><br />The fuel tank is vented with a standard vent screw that is open during operation.<br /><br />Thank you for the recommendation on the water pump impeller.

 

[JB]

Re: 1972 Evinrude, 2HP Misc questions

Hi, DBI.<br /><br />Do you have an alternative explanation for why the engine runs on introduced fuel but not from the carb? If there is adequate fuel (no water) in the bowl only a plugged or misadjusted jet can prevent it from firing. You would not be the first person to carefully clean a carb without clearing a plugged jet or orifice. On a 2hp they are very tiny.<br /><br />Have you removed the fuel valve from the bottom of the tank and inspected it? The filter I referred to is part of that assembly.<br /><br />Though your compression seems low, variations in guages and technique may produce low readings. I don't think it is low enough to prevent the engine from running. After you get it running it would be a good idea to do a decarbonizing.<br /><br />Good luck.

 

[BF]

Re: 1972 Evinrude, 2HP Misc questions

Hi,<br /><br />I changed the impeller alone on my 2hp this year. Was no problem, but be careful you don't loose the "key" that fits in the driveshaft when you pull the old impeller off. <br /><br />As for the little part that you had left over, I know exactly what you mean, and it does fit on one of the hex headed, flat slotted bolt/screws on underside of the cowl. But I think it might be to hold the fuel tank, not the recoil. Mine's not at home, so I'm afraid I can't look at it to tell you more. <br /><br />It sounds to me like it might be an overheat problem (?). I'd do the impeller and see if that fixes it.<br /><br />I have some issues with mine, that make me think I'll be doing the carb cleaning thing next spring myself.<br /><br />HTH<br /><br />Brent

 

[Jonathan Burnett]

Re: 1972 Evinrude, 2HP Misc questions

Good Point JB,<br />Although I thought I did a good job cleaning and blowing the carb housing and parts a clogged part would explain how the engine would run with induced fuel. The fuel is clean, dry and fresh. <br /><br />The fuel shut off valve on the bottom of the fuel tank does not have a fuel filter as part of its assembly. This is a standard 90 Degree steel shut off valve. It has been taken apart and cleaned, resealed and lubricated. It seems to be an original valve that screws into a 1/8 NPT port on the bottom of the tank.<br /><br />Do you think the valve is original? If so, how is a filter incorporated? If not, I suppose I could introduce an in-line filter.<br /><br />Thank you for the advice on compression. My thought was that if the compression was low, there may not be enough air flow through the engine to draw fuel into the venturi from the jet.<br /><br />As far as decarbonizing, I have had the engine apart. Top end and low end. No carbon left at this point. <br /><br />To BF:<br />Thank you for the advice on the impeller and key. <br /><br />As far as the stainless steel part, it seems to actually be a spring of some kind. It is not stong enough to hold the fuel tank. The fuel tank is securely held by its mounting.<br /><br />I'll keep searching for a solution on this part.