No it didn’t stall. The black smoke only happens when the engine is started or when it is reved when operating. I was going to change the gas filter. The loss of power is slow but the recovery (disengage the deck) is quick. Thanks for your reply.
First time posting! I hope someone has a good suggestion for this problem. Other clues I noticed:
Black smoke while starting and running. But starts easily.
Engine slows even with fuel lever at max while mowing.
Engine power recovers when drive belt for deck is disengaged.
This has been a...