I had one that would make a knock noise when pulling the cord, and a little bit when running yet otherwise ran great. Turned out the gudgeon pin had a significant amount of play in it.
Hi Tyler, could be gudgeon, , no sign of noise when pulling it over, noise starts once it fires up. I will leave it for the moment, I have too many F/C motors in bits . People wanting mowers has slowed up now so I can concentrate on building for the September rush and I can go through the piles of F/C stuff that is in bits and sort it out
