Did I break something (winterization / trimmer)
I have an Echo trimmer, gt225 I believe is the model. I drained the fuel tank and ran it until dry, then added 7ml of 2 stroke oil to the cylinder, as per the instruction manual. It's getting warm again so I decided to pull it out today. I wasn't sure if I should try to drain that oil out of the cylinder or not - the manual doesn't mention this. I decided not to, and fired it up. It started up like normal, with a bit of smoking (no more than normal). I let it warm up and went about trimming stuff. I used new gas at 50:1.
Then I got to a place I needed to tip it on its side to "edge." After I finished that, I noticed a huge plume of bluish smoke coming from the exhaust. This lasted for about 30-40 seconds and then cleared up. A few minutes later I needed to tip it on its side again. Almost immediately it started putting out a huge cloud of smoke. I tipped it back to its normal orientation, but the smoke didn't clear up this time. I shut the trimmer off about a minute later, and it kept on smoking. I set it down on some concrete in case it caught fire (obviously something was on fire somewhere, and some of the exhaust system components were red hot), and after about 3 minutes it stopped smoking.
I figured some of the oil I added during the fall had suddenly found its way into the exhaust system and caught fire. I took the exhaust system apart to check if there were any huge deposits of carbon, but it was remarkably clean. The piston was spotless, as was the exhaust port. The spark screen was clean, as was the muffler. Only the exterior of the exhaust was dirty - it had a sticky oily residue on it, which I cleaned off. I'm thinking this is what caught fire and was smoking, but honestly I am not sure. The spark plug looked the same as before this little incident.
I fired the trimmer back up after cleaning the exhaust, and it seemed to run fine. I didn't run it for long since it was getting dark, but the smoke level was back to normal.
I'm wondering what I did wrong here, and if I've damaged anything. It's not even a year old, so I'd hate to have wrecked it.:(