1962 Evinrude 40 hp oil leak /no power

[Merrill]

I have a 1962 Evinrude on my 16'Wooden Merrell. I have 2 problems. <br /><br />I cannot get the motor to run at anything above 2500-3000 rpm. I talked to the Evinrude dealer and they thought it was probably the carb, so I rebuilt it but no change. It starts and runs fine. <br /><br />Second problem is it leaks gear oil from the little hole about an inch above the prop. <br /><br />I'm a hotrodder but I have no experience with outboards. I have a shop and I'm not afraid to get into the motor. Any idea why I can't get any power/rpm out of the engine? Is the oil leak something I could fix at home? <br /><br />I have had this boat for 6 months and have not been able to use it becouse of these problems. <br />Taking it to a dealer is an option too, but I would rather fix it myself. <br /><br />Thanks in advance<br /><br />Thanks

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

Nice outboard. A lot of us here have Big Twins, so there's lots of help here.<br /><br />When you say you can't get the engine to run above 2500-3000 RPM, are you talking about on the water? Do you have a tachometer?<br /><br />There are a lot of possibilities, so we'll have to get a little more info. Since you're handy, you can fix any problem with this outboard yourself, once it's diagnosed properly.<br /><br />These are good-running sweet engines. So, we'll play twenty questions and come up with an answer for you.

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

Thanks for the quick reply. With the boat in the water it will not go above 2500-3000 rpm. I have a tach. I just talked to a Evinrude dealer and he said to pump the fuel line while operating the motor and see if that helps. I'll try that next. <br /><br />The two nearest dealers WILL NOT work on this motor becouse of it's age. So, I'm on my own!<br /><br />This boat, motor, trailer (all 1961) are like new and I don't mind spending money and time on them.

 

[Paul Moir]

Re: 1962 Evinrude 40 hp oil leak /no power

Pumping the primer bulb is a great start. If that doesn't help, pull your spark plugs and note what they look like and if there's any difference between the two.<br /><br />Needless to say, make sure the armature plate up under the flywheel is advancing until it hits the stop, and that the throttle plate in the carb is opening fully at full throttle. You will need the engine in 'Forward' to test.

 

[R.Johnson]

Re: 1962 Evinrude 40 hp oil leak /no power

Check the spark to both cylinders, it sounds like you are running on one cylinder. On that age engine you are probably looking at cracked coils, oil on the points, bad condensor, or frayed, and aged plug wires.

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

Keep us informed on this, and we'll have you running at full tilt.

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

I setup a drum of water and got it started. Sure enough, the bottom cylinder is dead. Looks like everything I need to look at now is under the flywheel. I have a collection of automotive pullers, should work right? What would be the logical things to look at now? Thanks

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

What you need is a harmonic balancer puller. The three holes are 1/4X20, so you'll need three 1/4 bolts, 3 1/2" long. I recommend grade 8 bolts for this.<br /><br />It should come off OK, but here's a thread to read for removal and replacement. It covers the common pitfalls:<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=28;t=029310#000017 <br /><br />The torque for the crankshaft nut is 105 ft-lb, and it's really critical. If you don't torque it properly, it will shear the crankshaft key.<br /><br />With the flywheel off, look for bad-looking coils or bad points. The condensers rarely give trouble.<br /><br />The coils and points are available through your local NAPA dealer, and their Sierra Marine parts book has the correct numbers for the coils and tune-up kits.<br /><br />A lot of people replace both coils if they're the old OMC style. The new ones from Sierra (green) are superior.

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

Just for your reference, the coils are Sierra Part number 18-5181. The tune up kit, including points and condensers is Sierra 18-5002. None of the stuff costs all that much, so if you don't see the green coils, and they look old, you might as well replace the lot. I hate pulling flywheels.

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

BTW, this is where you're going to want a manual, I think. I know I sure appreciated having one at hand when I pulled my flywheel for the first time. The OEM manual has good details on the job, including things you might miss.

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

Got the flywheel off ok. The coils are green but have a pink plastic covering part of it. The plastic is cracked on both coils, everything else looks ok. Are the plug wires hard wired to the coil?

 

[daveswaves]

Re: 1962 Evinrude 40 hp oil leak /no power

That cracked pink plastic covering is likely the cause, your coils are original and the insulation has simply dried out and cracked, spark is shorting to ground. The wires are push in, once you remove the coils the wires will stay behind.

 

[denislajoie]

Re: 1962 Evinrude 40 hp oil leak /no power

Hi For your oil leak, that little hole is a drain for water, if oil is coming out, either the insulation on the wires, if it is an electric shift, is broken\frayed, or the driveshaft seal is letting oil through, once you re in there you might as well repalce the water pump impeller, its cheap, and easy to replace once you re in there.

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

Anyone got a source/part # for the plug wires? Their original too. I ordered the coils and tune up kit from NAPA, it will be here tomorrow. <br /><br />The plan is to get it running good than I'll start on the oil leak. So I need an impeller and some seals, anything else? Part #'s? <br /><br />I would never have thought that NAPA would have parts for these old motors. What about other parts? Local dealer or on line?<br /><br />I'm very happy with the progress so far, thanks!

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

Plug wires. Check 'em. They may be fine. If not, then new ones. They must have wire cores, though, not the resistor cores in auto wires. Most auto parts stores will have this material, if you can't use your originals. If they're not cracked or worn, they should be OK.<br /><br />You can get the impeller and lower unit seal kit through NAPA and Sierra, too.<br /><br />Impeller is 18-3083<br />Lower Unit Seal kit is 18-2686 (manual shift) or 18-2687 (electric shift).

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

Making headway here. Got the new coils and tune up kit. Pulled the old coils, sure enough one of the coils was burnt completly through on the bottom side. This was the cyl that was dead. <br /><br />I ordered the repair manual but I have not gotton it yet, so some more questions. What is the point gap? How can I put the points on the high side of the cam without the fly wheel installed? Any other advice before I put the FW back on?<br /><br />Thanks so much for the help, I would never have gotton this far without CATransplant and everyone else. The part #'s were a life saver. <br /><br />Now for the drive shaft seal!

 

[itstippy]

Re: 1962 Evinrude 40 hp oil leak /no power

Point gap is .020<br />Put the flywheel nut on the shaft without the flywheel and use a wrench to turn the crankshaft when setting the point gap (always clockwise so you dont turn the rubber impeller blades backwards down in the waterpump).<br />Flywheel nut torque is 105 ft/lbs. You'll need to jam the flywheel to hold it to get that much torque on it. I use an automotive flywheel holder. I've read of folks raising the starter gear up manually and jamming a piece of plastic between the starter gear and the flywheel gear to hold it.

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

Quick question,the plate that the coils are mounted to, can it only be installed one way? It is secured by 4 screws. I marked everything before I took it apart so I should be ok. I will be ready for the ops check in 1 hr.

 

[CATransplant]

Re: 1962 Evinrude 40 hp oil leak /no power

You'll be OK. If the four screws line up and the plate is oriented the same way as it was, it'll be just fine.<br /><br />Let us know how it turns out.

 

[Merrill]

Re: 1962 Evinrude 40 hp oil leak /no power

The ops check was good, fire in both cylnders. I do think it could use some fine tuning though. The motor seems to run a little rough, but I have not been around a 2 stroke for many years so it may be fine. What about timing? When I lean out the carb the rpm picks way up than it starts coughing so I set it at midway. <br /><br />Keep in mind I have the manual on order ($24.95 on Ebay). It should be here the first of the week. I'll be able to do my own trouble shooting than but I'll still need you guys for backup. So bear with me. <br /><br />Now for the second problem of the oil leak. I ordered the impeller and seal from NAPA. I took the prop off and took the very bottom cover off that holds the prop shaft and gears. Found some metal hunks down there aluminum I believe. The fluid that came out was milky, I seem to be getting water in the gear oil. Will the seal that I need be in the kit from NAPA? <br /> <br />One last thing, I found a little spring on the shop floor that I can't ID. I think it may have come off the motor but maybe not. It's about an inch long, little loop on both ends, Any idea were it goes? Thanks