I have a relatively New Honda Self propelled HRR216 mower, only a few years old. The belt will slip once in a while, I hear a squeak, and once in a while it will loose the self drive. I just assumed that its due to going through wet grass. It will actually kick back in maybe after 5 minutes or so and only does this once in a while, not every time I mow. Not sure how to fix it. 2 weeks ago I changed the oil and put 10-30 Mobil 1 in to it. Last week I mowed with the new oil with no issues. Yesterday, I started it on the lower setting and it was smoking for 10 minutes with a major loss of power and pull when I finally put it in to the high gear. I checked the air filter, had a few pieces of grass but still looks new after a summer of use. I ended up giving up and put it away. After about 15 minutes, I came back to try it again, took off the air filter, unplugged and plugged the sparkplug wire, started it, it smoked another minute and worked as if its back to being new. I again had a few issues with it loosing the drive mid way through my mowing, but it came back after a few minutes. As stated I hear the squeaking of the belt, but usually I just assume its slipping in wet grass. I checked the oil level and it looks good. Gas is the same ethanol free gas I’ve been using all summer. Weather was colder yesterday but I doubt that would cause it. My neighbor suggested it could be something with the governor. Can someone please help me figure out what happened, something I can do to make sure this thing will be trouble free. I know it was a one time thing but it’s frustrating, I hope this is not the beginning of things to break. I had a Craftsman one that lasted me over 20 years with no issues and barely any maintenance. This Honda seems to be so quirky. If the self drive breaks, it’s very heavy to push. So I have 2 issues: 1. Lost power yesterday when I started it and would barely move when on self drive - Could the new oil do it? 2. Belt slipping and self drive not working once in a while.