It offers 6.5 ft. lbs of gross torque with a Briggs & Stratton ready-start engine for powerful performance. The 10646 includes Lawn-Boy's 3-in-1 system which quickly changes between the mulch, rear bag, and side discharge functions. It also has a 20" lightweight steel deck that can be adjusted to the optimum mowing height. The mower has a suggested retail price of $289 and comes with a complete 2 year warranty. The 10646 is the same model as the 10641 with the exception that it is CARB compliant while the 10641 is not.