Is there any way to convert a 6.5HP Craftsman gas push mover from a pull start to an electric start.?

Dad is getting too old (80) to pull the cord without hurting his arm!! He wants an electric start. He has too much gr for electric cords. He still wants the exercise. His mover is fairly new and runs great. It has those Hi-wheels. A new electric start is around $300 at Sears..Any advice would be appreciated. Thanks, Laura