Cut-off saw STIHL TS 420 350 mm, 3.2 kW (4.4 HP)

The STIHL TS 420 350 mm cut-off saw with 3.2 kW (4.4 HP) is a petrol-powered, handheld cutting tool designed for high-demand on-site work. It is built to cut concrete, masonry and metal with a 350 mm blade, combining a powerful engine and a compact, serviceable design suitable for construction and renovation tasks. The tool emphasizes portability and continuous cutting performance for professionals who need a mobile solution for heavy materials.

Advantages

The saw delivers a high power-to-weight ratio that supports extended cutting cycles while remaining transportable between job locations. Its petrol engine provides consistent torque for demanding materials, and the 350 mm blade diameter allows for deep cuts in concrete and masonry. The machine is engineered for serviceability and durability under frequent professional use, with features that facilitate rapid starting and straightforward maintenance.

Suitable for

• Cutting reinforced concrete and concrete slabs
• Masonry block and brick cutting on construction sites
• Metal cutting when fitted with an appropriate abrasive or diamond wheel
• Renovation and demolition tasks requiring mobile cutting equipment
• Contractor jobs where a petrol-powered, non-electric option is required

Key specifications

• Blade diameter: 350 mm
• Engine power: 3.2 kW (4.4 HP)
• Fuel type: petrol (two-stroke or manufacturer-specified fuel mixture)
• Cooling: air-cooled engine design for continuous operation
• Drive: direct drive system for blade rotation
• Cutting depth capability suitable for standard 350 mm discs
• Weight: designed for handheld, portable use (refer to manufacturer for exact mass)

How to use

Before operation, inspect the saw, verify the correct blade type and ensure secure mounting and blade guard placement. Confirm fuel level and prime the engine according to the manufacturer’s starting procedure, then start the petrol engine and allow it to reach operating speed. Position the saw firmly, align the blade with the intended cut line and apply steady, even pressure—avoid forcing the blade. For wet cutting, follow appropriate water feed guidelines if the saw supports wet operation; for dry cutting, maintain proper dust control measures. Stop the engine and allow the blade to come to a complete stop before setting the saw down. Perform routine checks and maintenance after use, including cleaning, inspecting the blade and checking fuel and oil systems.

Usage recommendations

Use blades rated for the material being cut and adhere to local safety regulations. Wear appropriate personal protective equipment including eye, ear and respiratory protection, and gloves. Maintain proper ventilation and dust suppression on confined sites. Follow the manufacturer’s maintenance schedule to ensure reliable operation and to extend service life.