Small Engine Troubleshooting Problems? Ask a Mechanic Now.
HI, my name is***** will be assisting you.
There are a couple possible reasons for this. The engine control cable or brake cable as some refer to it may not be pulling the brake assembly all the way off so that it is dragging on the flywheel. The engine may be seized internally which would cause it. As long as the blade is not lodged by grass or something under the mower deck.