NEW STARTER MOTOR FITS BRIGGS AND STRATTON ENGINE 311777 312777 313707 313777 31A507 100% NEW and Made with the Highest Quality Components Available Full One Year Warranty Computer tested for consistent Quality and unsurpassed reliability Starter - Voltage: 12V Rotation: Counterclockwise Teeth On Drive / Splines: 16 Source: Aftermarket Replaces Part Numbers: 311777 312777 313707 313777 31A507 28Q777 28R707 28S707 28S777 28T707