Hey Kook, I bought a lawnmower from Sears about 10 years ago. I think I have permanent shoulder damage from the number of times I had to crank that pull chain to finally get it started the first time. It looked like the neighborhood was on fire from all the smoke pouring out. Turned out to have a cracked block or something. Sears took it back and gave me one that seemed to have a bad self propell mechanism. Finally I decided to dump Sears and I headed for the John Deere dealer. I said I'm here to buy a quality mower. He said OK and took me over to the Honda mowers, he said they were better. I hate to admit it but the Honda has been a good mower. As for the pump, sounds like a hormone problem. Sorry, I probably wasn't very helpful.
