STIHL RM 655.1 RS: The Ultimate Professional Roller Mower The STIHL RM 655.1 RS is the crown jewel of the Series 6 lineup, specifically engineered for the Irish estate owner who demands a “Wembley-grade” striped finish without the mechanical bulk of a tractor. Dominating large lawns up to 2,500 m², this 21″ powerhouse is defined by its heavy-duty stainless steel rear roller, which provides surgical stability for edge-mowing along flowerbeds while laying down deep, professional stripes in a single pass. Unlike standard mowers that use plastic rollers, the RM 655.1 RS features a split-roller design with high-grade sealed bearings, allowing for effortless pivoting and sharp turns without scuffing your turf. Driven by the new Kohler HD775 OHV engine, it delivers relentless torque to its high-lift blades, ensuring that even thick, damp grass is vacuumed into the 70-litre collector with zero clumping. This is the only mower that combines the brute force of a commercial petrol engine with the refined aesthetics of a precision lawn-striper. Split Stainless Steel Rear Roller: The 655.1 RS features a split-axle metal roller that allows each side to rotate independently. This is the “secret sauce” for maneuverability, allowing you to execute tight 180-degree turns without tearing the grass surface—a major upgrade over solid-roller competitors. BBC (Blade Brake Clutch) System: Empty your grass box without ever stopping the engine. The BBC system disengages the blades while keeping the motor running, saving you hundreds of pull-starts per season and providing an extra layer of protection for the crankshaft if you hit a hidden stone. Mono-Comfort Handlebar Architecture: This single-sided, height-adjustable handle isn’t just a design quirk—it provides completely unobstructed access to the grass collection box. You can lift the box straight out without navigating a frame, making emptying significantly faster and more ergonomic. Aero-Flow High Lift Blades: The internal deck geometry is shaped to create a powerful air vortex. This “vacuum effect” stands every blade of grass upright before cutting and ensures the 70-litre box is packed to the very top, even in the wet, heavy conditions common in Ireland. Magnesium-Reinforced Aluminum Deck: Built to last a lifetime, the deck is constructed from powder-coated aluminum with replaceable polymer side-skirting. It is immune to corrosion from grass acids and light enough to handle inclines with minimal effort. Kohler Smart-Choke Starting: Forget priming bulbs or manual chokes. The HD775 engine features a smart-sense system that provides the perfect fuel-to-air ratio for a first-pull start, whether the engine is stone-cold or mid-day hot. Spring-Loaded 7-Stage Adjustment: Adjusting your height from 20 mm to 80 mm is nearly weightless. The central adjustment system is spring-counterbalanced, so you can change the cut height for your lawn’s different zones with one finger. 1
