Description Experience the same great features as the RMA 510 offered as a variable-speed, self-propelled mower. Features SELF-PROPELLED 21-INCH STEEL MOWING DECK CONVENIENT HANDLE BRUSHLESS MOTOR Technical details Cordless power system AP Drive 1,5 – 4,5 km/h Recommended battery AP 300 S Device weight without battery 63.9 lb Cutting height 25 – 100 mm Rated speed of sweeping attachment 3200 rpm IPX Rating IPX4 Max. area per battery charge AP 200 277 m² 1) Max. area per battery charge AP 300 S 416 m² 1) Max. area per battery charge AP 500 S 499 m² 1) Grass catcher box volume 75 l Device width without attachments 55 cm Max. device height 100 cm Front wheel diameter 200 mm Rear wheel diameter 250 mm Measured sound pressure level LpA 83 dB(A) Sound power level, guaranteed LWA 93 dB(A) Uncertainty factor, sound pressure level KpA 3 dB(A) 2) Vibration, guide bar, ahw 1.60 m/s² Vibration uncertainty K 0.80 m/s² 2) Hazard Warnings Proposition 65 – EnglishThis product contains chemicals known to the State of California to cause cancer and reproductive harm. www.P65Warnings.ca.gov General Power ToolImproper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only. Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.