Ariens Sierra 1440H starts hard and runs rough...
I have an Ariens Sierra 1440H lawn tractor that is hard starting and runs rough. I just completed replacing the both gears on the electric starter so I had to pull the fly wheel. After I got everything back together it started and ran fine. I let it run for a few minutes and then turned it off. I then decided to figure out which indicator lights went in which holes on the dash - two of them were laying loose on top of the battery. I was doing short start/stop cycles (choke off) on the engine while observing which light turn on/off when after about 6 cycles it started to idle very rough and stop on it own. My guess was that it was flooded so I let it sit for a bit. That was yesterday evening. Tonight I gave it a try again and it didn't run any better. So I pulled the spark plug and it looked okay - gapped okay too at 0.030". Filter and pre-filter were clean. Fuel filter was replaced last year (as was the air). I tried a new plug, no difference. I put the old one back in. In the video here:
the first start was with the choke on, then I back it off. It started and but is not sounding like it should (although it doesn't sound that rough in the video, it is).
If I had more than on cyclinder I would think one was missing.
The engine is a B&S 29P777-0644 A1
The flywheel is keyed to the shaft so I don't think it possible to put it back together wrong. I did have to drill out the rivets to replace the gear ring, and I thought I clean up the metal shavings completely if any leftovers on that could be the cause of the problem.