The blades won't engage. I have just replaced the serpentine belt and that didn't fix the problem.

Which matreial is used to make the gears in the Poulan xt 17.5hp lawn tractor transmission?

HD21H42 Poulan. Starts & runs fine for a few minutes then stalls. Then will not start until it cools down. Clean fuel, new fuel filter & plug, oil good. Cleaned carb. Thought it was a choke issue but only adjustment is cable position which I tried. B & S engine. Dirt in carb?

I have a poulan 14.5 hp 38 in cut model 271491 from sears. It won't start, it sounds like it needs gas. I have changed the spark plug, fuel & air filters. Battery and connections all good. There is no spark coming from the spark plug. So I added a little fuel to the carb and it starts to whirl like...