Need help!! Have been unable to get my Toro Model:26682 started. It has the Suzuki 2 Cycle Engine... have replaced plug, filters, and all the obvious items... .. Neighbor said it could be the timing?? Can anyone advise me how to set the timing on this mower... I hate to give up on her. Did check the flywheel key and it is ok.. Sometimes when I pull the rope , she jerks out of my hand,, but no start. Grateful for any guidance.