1972 2hp evenruide

[pdjp1584]

I just purchased this motor and ran it in a barrell for about 15 minutes. It starts fairly easy when its cold (3-5) pulls and it idles really good at low rpms, but when its warmed up its a pain to start. I pulled the spark plug and it had a champion j8c in it. Is it possible that the plug is too hot and its having a hard time firing up. This is my first outboard and im clueless.

 

[nwcove]

Re: 1972 2hp evenruide

you sure its not a jc8? i just put a set in my 62 3hp, and im worried about the plugs being too hot and burning holes. it did have jc 6's.

 

[kfa4303]

Re: 1972 2hp evenruide

Hi pd. The inability to start after the motor has warmed up, are classic symptoms that you may have an electrical/igintion issue. Probably have a coil that is failing due to high temp. Pretty common really. The coils were about the only weak point on these old motors, but the new replacement coils are super reliable. To check them, remove the flywheel and visually inspect the coils and other components. If you see any cracks, scorches or other damage to the coils, they're bad and need to bereplaced. I you don't see any damage, you're probably ok. While you have the flywheel off, you should check/replace that the points are clean and set them to .020". You may as well replace the spark plug wires too, which can wiggle loose over time. You can get 7mm copper core replacement wire by the foot at most auto parts stores for about $3 a foot and they're worth every penny. You can get any of the parts you may need right here at iboats under the MARINE STORE tab. Here are some handy links too.

http://www.duckworksmagazine.com/07/columns/max/index1.htm
http://forums.iboats.com/showthread.php?t=158086

 

[pdjp1584]

Re: 1972 2hp evenruide

well i just pulled the flywheel off , which wasnt too bad of a job. i observed the coil and it looked pretty scorched . The two wires coming from the coil were copper brown. Im not sure it thats a sign or not. The coil and condensor look easy to replace. Im just a little worried about the points and contact. Is it a difficult job to replace them . They look like they are pretty corroded. I also noticed a little slude around the top of the crankshaft when i took the flywheel off. Is that normal or not. Thanks again for the help. I have the original service manual , but its still nice to actually hear from people.

 

[kfa4303]

Re: 1972 2hp evenruide

Hello again pd. No worries. It's not a hard job to fix any of that stuff. Best of all once you've done it to this little motor you'll know how to fix virtually any OMC ignition of similar vintage. In fact, that's why so many of here like the old motors. They're super simple, reliable and cheap and easy to work on. You amy as well replace all of your ignition components. Now that you have the flywheel off. Sounds like the coil(s) are bad as I suspected. You'll need 2 new coils (about $20 each), a tune up kit (contains points and condensers) ($15), some new spark plugs ($5) and copper core spark plug wires ($25). it may sound like a lot, but you'll have an entirely new ignition system for less than $100 and it will last for years and years. You can get all the parts you need right here at iboats. Just click on the MARINE STORE tab in the top left corner. You can look up all your parts and part numbers here too. Below are some handy links that can walk you through an entire tune up. Give them a good read and you'll be good to go. Keep us posted. Good luck.

http://forums.iboats.com/showthread.php?t=158086
http://www.duckworksmagazine.com/07/columns/max/index1.htm
http://www.outboard-boat-motor-repa...hnson 5.5 HP 1954-1964 Carburetor Tune-UP.htm
http://www.sschapterpsa.com/ramblings/johnson_QD.htm
http://www.duckworksmagazine.com/03/r/columns/max/07/index.htm

 

[rwilso]

Re: 1972 2hp evenruide

Here is a link for your motor http://www.boats.net/parts/search/BRP/JOHNSON/1972/2R72M/parts.html

 

[BF]

Re: 1972 2hp evenruide

You've got lots of good advice so far... redoing the ignition is not hard. But.... while you're going through the motor and buying some parts, also buy a new impeller and a couple of extra shear pins. Either keep the pins with your fishing tackle, or stick a spare in a cork and zip tie it to the motor somewhere. Also drain and replace the lower unit gear oil. The impeller change is very easy to do... on my 2 hp, it pumped water, but with a new impeller it pumped WAY more water. You might also pull off the fuel petticock and clean out the little screen in it. Also FYI, on my 2 hp, if you only open the fuel tank vent a turn or two, when running it will eventually (after 20 min's or so) vibrate closed and cause a lean situation (like you're seeing). From vacuum forming in the tank. Open the vent on the cap all the way until it won't open anymore... then it won't vibrate closed. They're kinda cool motors, super light and simple... Being 1 cyl, they're a bit buzzy though. My hand gets numb if I drive it too long. Eventhough I don't use mine much, being so small, I tend to throw it onto the transom of my 16' aluminum beside the 25 if I'm going off the beaten path. Just as a security blanket / backup in case my other motor dies. Only weighs about 25 lbs, and gives me piece of mind... great canoe motor. Good luck.

 

[pdjp1584]

Re: 1972 2hp evenruide

Thanks for all the help. I ve looked on all of those links and they helped out alot. Im assuming the way you take off the the points is to remove the screw closest to the crankshaft and the second crew is for adjusting the points? I actually bought the motor off of ebay and when it arrived it had a big glob of jb weld on the lower unit, luckily i found a new lower unit with a driveshaft for $25 bucks, so it wasnt too big of a deal. I replaced the impellar on it. Ive noticed a difference after replacing it. Are u still running the original water pump. They look like a simple design. How often do they need a new water pump on these little motors.