hi my name is abel i recently bought a poulan pro ridding mower i did a complete tune up on the mower it worked fine for the first week of use but now the mower will not start , and if it does start it only runs for 10 minutes and then dies. In have change the coil pack and the sinliod and it will still not run right. I would like if some body would give me some advice to fix the problem before i pour more money in to it . thank you:confused2: