Evinrude 82 / 70 HP won't start

[dchami]

Folks,<br /><br />I bought an 5.1meter bought with an 1982 Evinrude, 70 HP, 3 Cylinder 2 stroke engine. When I took it out for a run with the previous owner it went well with no probs. I took it out yesterday for the first time since I bought it and 5 minutes into the journey, the engine stalled. It started again immediately, however when I put it in forward or reverse it stalls again. It started okay again and stalled the moment I put it in gear. Didn't know why this happened. I fueled it before taking it out with a 100:1 gas to oil ratio. Owner told me he had been using 100:1, while literature says it sho uld be 50:1... So what should it use for the future?<br /><br />Now when I got home, I put the water muffs on, and<br />started it, put it in gear with no problems. Everything was fine... however 5 minutes later, while in gear and at about 4000 RPM, the motor shut, and it won't start. <br /><br />It seems that the starter can't turn the flywheel. The starter gear hits the flywheel and gets stuck there. It seems that the flywheel is stuck! Not sure if this is a broken cylinder, gear shaft, broken piston rings... Has anyone seen this before? What do you think it might be?<br />What should I look at? any tips on how to troubleshoot would be great.<br /><br />thanks,<br />Dan.

 

[rickdb1boat]

Re: Evinrude 82 / 70 HP won't start

Could be it's overheating, due to the fuel Mixture. Always use a 50:1 Ratio, no matter what the previous owner did! When the Motor is cold, can you rotate the engine by hand? Try it again on the Muffs and When it quits on you, put your hand on the Cylinder Head, and if it's to hot to keep it there more that a few seconds it's overheating. Are you getting a good stream of Water out of the Pee Hole? Any warning horns going off? For a start, Try the 50:1 Mix and do the above and let us know what happens!

 

[dchami]

Re: Evinrude 82 / 70 HP won't start

Hi Rick,<br /><br />thanks for the reply. The problem is I can't rotate the engine by hand... The flywheel only moved a few teeth, and the starter gear which was stuck to the flywheel disengaged. Then I tried starting it again, and the starter got stuck to the flywheel again... I'm guessing this is because the flywheel is not as loose as it should be... Should I be able to rotate a flyweel for one full circle by hand say? I can't do that right now.<br /><br />Thanks, Danny

 

[MGuckin]

Re: Evinrude 82 / 70 HP won't start

Sounds like 2 different problems.<br />With motor cold and plugs out can you turn motor by hand?<br />If so before you plug the plugs back in, squirt some wd40 into the cylinders to prelube and rotate by hand easily.<br />Premix ratio is 50:1 not 100:1. Heavier is always better.<br />Starter drive may be hanging on the shaft because of dirt build up.<br />If all checks ok, start the motor and make sure you have water coming out the pee hole. <br />NEVER rev a motor that high on muffs, insufficient water flow and pressure.<br />In as much as you ran the motor lean on oil, you might want to perform a compression test.<br />Keep us posted.