I have a 2006 craftsman 32cc weed trimmer. model # 358.791070 serial # 06215N702701 I can start it on the floor with the weed trimming attachment on it, but when I pick it up off the floor it cuts off. If I rotate it up side down real fast I can keep it running but as soon as I rotate back right side up it cut off. If I start it with out the attachment on it runs fine. I tried a new attachment it did the same thing. I also changed the gas. Can you help me?

Willy, May 2009