STIHL TS 420 Petrol Cut-Off Saw – 14″ / 350 mm

STIHL TS 420 Petrol Cut-Off Saw

The STIHL TS 420 petrol cut-off saw is a professional 66.7 cc machine designed for demanding construction, landscaping, groundwork and hardscaping applications. Its powerful 3.2 kW engine drives a 350 mm/14-inch cutting wheel and provides a maximum cutting depth of up to 125 mm.

Compact dimensions, balanced handling and the STIHL anti-vibration system make the TS 420 easier to guide accurately through concrete, paving, brick, stone, asphalt, structural steel and other materials when fitted with the correct cutting wheel.

The TS 420 is supplied with a 350 mm abrasive cutting wheel and can be used as a handheld machine or fitted to the optional STIHL FW 20 cart. Browse the rest of our professional cut-off saws and accessories to compare the available petrol and cordless options.

Key benefits of the STIHL TS 420

• 350 mm/14-inch cutting wheel for larger and deeper cutting applications.
• Up to 125 mm cutting depth for paving, blocks, concrete, stone and construction materials.
• Powerful 3.2 kW output from the 66.7 cc STIHL 2-MIX petrol engine.
• Low vibration levels of 3.9 m/s² on both the left and right handles.
• Integrated water connection to help bind dust and cool the cutting wheel during wet cutting.
• Long-life air filtration with cyclone pre-separation for reduced filter maintenance.
• Manual fuel pump and decompression valve to reduce the effort and number of pulls needed when starting.
• Semi-automatic belt tensioning to help maintain consistent belt tension and extend component life.
• Ergonomic loop handle for controlled guidance in different cutting positions.
• Compatible with the STIHL FW 20 cart for controlled straight cuts over longer distances.

Who is the STIHL TS 420 for?

The STIHL TS 420 is particularly well suited to:

• Builders cutting blocks, lintels, brickwork and concrete.
• Landscapers and hardscapers cutting paving, kerbs, edging and natural stone.
• Groundworkers cutting concrete, asphalt, pipes and utility materials.
• Road and civil-engineering teams requiring a portable 350 mm petrol disc cutter.
• Professional users who need more cutting depth than a 300 mm cut-off saw can provide.

Always fit a compatible 350 mm cutting wheel that is approved for the material being cut and follow the operating manual, dust-control requirements and appropriate PPE guidance.

Why Masseys recommends the STIHL TS 420

Masseys recommends the STIHL TS 420 when a customer needs the portability and dependable power of a petrol cut-off saw but requires more cutting depth than the smaller TS 410 provides.

The TS 420 uses the same powerful 3.2 kW engine output as the TS 410 but accepts a larger 350 mm wheel and cuts up to 125 mm deep. This makes it particularly useful for thicker paving, concrete, blocks and kerbs, without moving to a significantly larger class of machine.

We also like the TS 420 because its water connection, balanced handling, low-vibration system and long-life air filtration are practical features for regular site work rather than unnecessary additions.

Masseys is an official STIHL dealer, with knowledgeable staff who can help you select the correct machine, fuel and cutting equipment. We also have an on-site workshop providing machinery servicing and repairs for petrol cut-off saws.

STIHL 2-MIX engine

The 66.7 cc STIHL 2-MIX engine produces 3.2 kW/4.4 hp for consistent cutting performance. The engine is designed to combine strong output with efficient fuel use and compliance with current emissions requirements.

The TS 420 uses a petrol and two-stroke oil mixture. Suitable products are available in our two-stroke oil and fuel range, including STIHL two-stroke oils and premixed Aspen 2 fuel.

Water connection for wet cutting

A controllable water connection supplies water directly to the cutting wheel. This helps bind airborne dust, cool the wheel and maintain visibility around the cutting line during suitable wet-cutting applications.

Where a mains water connection is unavailable, consider the STIHL pressurised water container for cut-off saws, which provides a portable water supply for site work.

Long-life air filtration

The pre-separation filtration system uses cyclone air routing to remove a high proportion of larger dust particles before the intake air reaches the main filter. This provides a longer filter service life and reduces routine maintenance in dusty working environments.

STIHL anti-vibration system

Buffer and spring elements reduce the amount of engine vibration transferred to the handles. With vibration values of 3.9 m/s² on both handles, the TS 420 provides controlled guidance and improved comfort during demanding cutting work.

Easy starting

The manual fuel pump supplies fuel to the carburettor before starting, particularly after the machine has been unused for a period. The decompression valve reduces pressure in the cylinder during starting, lowering the effort required on the starter cord.

Semi-automatic drive-belt tensioning

The semi-automatic tensioning system makes it easier to maintain consistent drive-belt tension. Correct tension helps extend the service life of the belt, bearings and drive components.

STIHL TS 420 technical specifications

What is included?

• STIHL TS 420 petrol cut-off machine.
• 350 mm/14-inch abrasive cutting wheel.
• Integrated water connection.
• Standard operating tools and documentation supplied by STIHL.

Please confirm the exact cutting wheel supplied before ordering where a particular wheel type is required for your application. Diamond cutting wheels and specialist wheels are selected according to the material being cut.

STIHL TS 420 compared with the TS 410

The main difference is cutting-wheel size and maximum cutting depth.

• The STIHL TS 420 uses a 350 mm/14-inch wheel and cuts up to 125 mm deep.
• The STIHL TS 410 uses a smaller 300 mm/12-inch wheel and cuts up to approximately 100 mm deep.

Choose the TS 420 for thicker concrete, paving, blocks and kerbs. The TS 410 may be preferable where its smaller wheel, slightly lower weight and more compact dimensions are more important than maximum cutting depth.

For emission-free cutting, indoor applications or noise-sensitive working areas, compare the STIHL TSA 230 cordless cut-off saw.

Frequently asked questions

How deep will a STIHL TS 420 cut?

The STIHL TS 420 has a maximum cutting depth of up to 125 mm when used with a compatible 350 mm cutting wheel.

What size cutting wheel fits the STIHL TS 420?

The TS 420 is designed for 350 mm or 14-inch cutting wheels. The wheel must be suitable for the machine speed and the material being cut.

Does the STIHL TS 420 come with a cutting wheel?

Yes. The machine is supplied with a 350 mm abrasive cutting wheel. A suitable diamond cutting wheel may be preferable for longer or more intensive work, depending on the material.

Can the STIHL TS 420 be used with water?

Yes. The TS 420 has an integrated water connection that supplies water to the cutting wheel to help bind dust and cool the cut.

Can the STIHL TS 420 be fitted to a cutting cart?

Yes. It can be used with the optional STIHL FW 20 cart and the appropriate attachment kit for accurate straight cuts over longer distances.

Is the STIHL TS 420 suitable for professional use?

Yes. Its 3.2 kW engine, 125 mm cutting depth, water connection, anti-vibration system and long-life filtration make it suitable for professional construction, landscaping and groundwork applications.