Leo, to go through the steps with you to find and fix your engine fault is likely to take quite a while, you will have to buy tools if you don't have them, and the mower probably won't be in running order while all this is going on. If you want to learn about mowers, this is all do-able and we can give it a try. Expect it to take quite a lot of work and frustration, and cost more than getting your mower fixed by an expert, or throwing it away and buying a second-hand mower in proper working order. You will also have to follow the process closely and take the steps you are asked to take, without making your own experiments or leaving out steps. It is your choice to make. We've gone through similar processes several times before at Outdoorking, and succeeded, but we've also occasionally had someone drop out along the way, and at least once the person was very unhappy and noisy about it when he made that decision.
