On Apr 25, 5:37*pm, Michael Dobony wrote:
My daughter's 4 cycle string trimmer seems to be locked up. *You can't pull
the cord at all. *With the spark plug out it pulls okay. *My thought is
valves stuck closed. Any other ideas for excessive compression? *BTW, its a
Troy-Bilt.

Mike D.

You must have flooded it unless it has some sort of compression
release system, but it should still pull, if valve was open it would
have no compression.