Welcome, is it the model below (europe only) or the one with the plastic cowl? Only advice I can offer is to buy / download the factory manual for the model and follow the troubleshooting sequence before pulling the cylinder head off (which will likely break bolts and then create more issues). Plen...

Could be the Crank seals, they often get tired on old 2 strokes, and instead of the cylinders sucking the fuel from the carb into the crank case, they just draw air in around the ends of the crankshaft, which is often why you can only get them started with loads of throttle and they die out as soon...

Hi all! I recently picked up a 1969 Evinrude Lightwin 4 outboard for pretty cheap as it has a couple of problems. The main one being it doesn't really run! I have had it started (will only start at full throttle after a lot of attempts) and it runs very lumpy and cuts out when the throttle is turned...