The Cobra RM433SPBI petrol lawnmower is powered by a new Briggs & Stratton 575IS Series engine. The RM433SPBI is self propelled and has a rear roller for a striped finish.Product FeaturesPush Button Starting System: Proven Lithium-ion battery technology ensures simple instant starting over-and-over again without constant recharging. Push-button is the easiest starting ever. InStart technology eliminates the need for the traditional recoil starting system Quick battery starting with Cobra RM433SPBI: InStart battery can be quickly charged from flat so you don't have to wait too long until your mower is ready to go! More than 50 starts from a fully charged battery.Expertly powering Cobra: The Cobra RM433SPBI lawnmower comes complete with a 3 Speed gearbox. This feature allows the operator to select the drive speed to suit the mowing conditions (faster for longer runs and slower for more intricate areas) using the control unit mounted on the handlebar. Cobra Rear Roller Lawnmowers cut down to 17mm: With a fully adjustable 6 cutting heights ranging from 17mm for a superb low finish, up to 75mm for tackling longer grass, choose the Cobra RM433SPBI. All this is achieved by simply using the single height of cut adjustment lever which has been conveniently positioned next to the rear roller Single lever 6 stage height of cut adjustment: The Cobra RM433SPBI petrol lawnmower has 6 adjustable cutting heights ranging from 17mm for a superb low finish, up to 75mm for tackling longer grass. All this is achieved by simply using the single height of cut adjustment lever. Depending on the height of your grass, you can easily and efficiently adjust the cutting height to suit. 50ltr grass bag: The Cobra RM433SPBI petrol lawnmower is equipped with a 50ltr fabric grass bag, ideal for collecting large amounts of grass clippings before the need for emptying. The grass bag on the Cobra RM433SPBI is made from a robust, high quality fabric. This fabric enables a strong free flow of air which means that grass collection on this machine is even more compact and comprehensive.