Long story short. I bought a brand new Honda 21 from Home Depot. Load it on the trailer and head to my moms to cut her grass. I was in the market for a mower anyway and researched this one. The mower said it came with oil, but it didn't. So, I hauled butt to the nearest store, got a quart of 10/30 penzoil, Grabbed funnel from the truck, and put half in. About 15-16 oz. The lawnmower didn't start until around the fourth pull and threw some smoke. It was getting dark so I had to hurry and finish it. The next day I had to cut my 1/2 acre.
This time it took about 6 pulls to start, but ran well and cut the whole thing in about 2 hours. That's when I read the manual because everyone said Hondas are great and start easy. It stated it recommends 12 oz of oil....
So did I screw it up or bend anything by putting 3-4 more oz of oil? I don't think it should've, but why the extra pulls? Then it would run fine. During my lawn cut it did bog down once due to thick grass. I stopped in place. It wanted to die and idled real slow. I stood waiting about 45 seconds and it then idled real high. Then it went back to regular idle and I continued cutting with no more problems.
Nothing on air filter or on spark plug when I checked. I drained all the oil out, put 12 oz back in and it starts on first pull now. But I swear there's a small clap or knock or like a pop noise if that makes sense. Or maybe that's just the way the Hondas sound. I have a toro recycler with Kohler and it sounds a little more smoother you could say being 4 years old. But the Honda has more power. Enlighten me please. I got the repair warranty on it.