If the mower has been setting up for awhile you might want to try to turn the engine over manually and if it doesn`t turn try it clockwise and counter clock wise and pull plug and put oil in cylinder ....have seen where the rings try to seize up and prevents the engine from cranking over ,,,,,,,neihbor gave me a almaost brand new mower with same problem after he bought a new one ....was he surprized to see me cutting my grass eh>>? good luck
bg, June 2006