Husqvarna 12″ K770 Stonesaw With 12″ Husqvarna Diamond Blade

A robust, all‑round petrol power cutter designed for professional work. The K 770 combines a favourable power‑to‑weight ratio with Husqvarna’s semi‑automatic SmartTension™ belt system, low handle vibrations and an easy starting concept to reduce operator fatigue and downtime. It’s built for roadwork, general cutting in concrete, blocks and curbs, and tasks where cutting close to walls or ground is needed. Consistent belt tensioning The semi‑automatic SmartTension™ reduces the risk of under‑ or over‑tensioning so power transmission is optimal and belt life is maximised. High power‑to‑weight ratio Compact, lightweight construction with 3.7 kW output gives strong cutting performance while keeping the machine manageable on site. Low vibrations for longer use Vibration levels are below 2.5 m/s² in the handles (2.1 m/s² left/front, 2.3 m/s² right/rear) to reduce operator fatigue and allow longer operation periods. Key specification Article ID 967808601 Cylinder displacement 73.5 cm³ Full specification Cylinder displacement (metric) 73.5 cm³ Electrode gap (metric) 0.5 mm Exhaust emissions (CO₂ EU V) 711 g/kWh Sound pressure level at operators ear (LpA) 101 dB(A) Sound power level, guaranteed (LWA) 115 dB(A) Product size width (metric) 225 mm Product size height (metric) 391 mm Packaging length 700 mm Packaging width 250 mm Packaging height 430 mm Weight (complete product w/o side packed articles) (metric) 10 kg Output power (metric) 3.7 kW Cylinders 1 Number of strokes 2-stroke engine Cutting depth, max (metric) 100 mm Blade diameter, max (metric) 300 mm Arbor diameter (metric) 20 mm Blade thickness, max (metric) 5 mm Peripheral speed, max (metric) 80 m/s Product size length (metric) 605 mm Vibrations left/front handle 2.1 m/s² Vibrations right/rear handle 2.3 m/s² Key features Easy and optimal belt tensioning The semi-automatic SmartTension minimises the risk of under- and over tensioning Light and powerful A light, compact and powerful machine with superior power-to-weight ratio. Exceptionally low vibrations Vibrations below 2.5 m/s2 in the cutter handles for more comfort and longer operation periods. Long service intervals A strong Poly-V belt combined with our maintenance-free starter DuraStarter™ and efficient filter-system Active Air Filtration™ ensures long service intervals. Heavy-duty cutting arm The new-designed cast magnesium crankcase has a three-bolt joint to attach the cutting head, enabling higher torsional rigidity than the previous two-bolt solution. Easy to start The unique design of the carburettor, cylinder and digital ignition system, together with air purge and decompression valve ensure an easy start. Less slurry and low water consumption Excellent dust control with our wet cutting kit. A progressive water valve for exact adjustment of the water volume to efficiently bind the dust and reduce slurry. Cuts close to walls or ground Possible thanks to the reversible cutting arm Asphalt Asphalt cutting in roadworks. Blocks, curbstones and pavers Cutting building blocks, curbstones and garden pavers. Burying of cables Burying of all kinds of cables. Cast concrete Cutting cast concrete. Floors and walls Regular cutting in floors and walls. Rescue cutting Cutting in rescue operations. Blade shaft and bearings Provide extended blade life and reduces maintenance. Features FAQs Will this fit my machine? Fitment can vary by model and deck size. Send us your mower model (and deck size if applicable) and we’ll confirm compatibility before you order. Do I need any extra brackets or fitting kits? Some accessories require a mounting kit or specific brackets depending on your machine. If you’re unsure, ask us and we’ll advise the correct setup. Can you fit it for me? Yes — if you’d like installation, let us know when ordering and we can arrange fitting (collection, workshop fit, or on-site depending on the product). What is the maximum blade diameter this cutter accepts? Maximum blade diameter is 300 mm (blade shaft arbor 20 mm). Select blades up to 300 mm with suitable thickness and arbor size. Can I use wet cutting to reduce dust and slurry? Yes. The machine supports a wet cutting kit and features a progressive water valve for controlled water flow, which improves dust suppression and reduces slurry. How heavy is the cutter and how does that affect handling? Weight is 10 kg (complete product, without side packed articles). The relatively light weight combined with a good power‑to‑weight ratio improves manoeuvrability and reduces operator strain on extended jobs.