Starting and fuel problems
A mower that ran last season but will not start now needs diagnosis before parts are replaced. Let us know how it was stored, whether fuel was left in it and what happens when you try to start it. The fuel system, ignition and controls are checked as the symptoms require.
When the self-propelled drive stops working
If the engine runs but the mower will not pull itself, the fault may be in the drive belt, cable or drive components. Tell us whether the wheels move at all and whether the problem is constant or appears on a slope.