STIHL BT 131 Petrol Earth Auger

Professional Petrol Earth Auger for Fencing and Groundwork

The STIHL BT 131 petrol earth auger is a powerful, single-operator ground drill developed for professional fencing, landscaping, horticultural, agricultural and construction work. It is designed to drill clean, precise holes efficiently, making it suitable for installing fence posts, planting trees and shrubs, preparing point foundations and completing other repetitive ground-drilling tasks.

Power comes from a high-torque 36.3cm³ STIHL 4-MIX® engine producing 1.4kW, combined with a robust drilling gearbox and a maximum spindle speed of 200rpm. Depending on the compatible drilling tool fitted, the BT 131 can drill holes in the ground up to 300mm in diameter.

Please note: this product is supplied as the power unit only. The earth auger bit or drilling tool must be purchased separately.

Why Choose the STIHL BT 131?

Drill Holes up to 300mm in Diameter

The BT 131 can be used with a range of compatible STIHL drilling tools, allowing it to create holes up to 300mm in diameter. This makes it a practical choice for fence installation, planting, soil sampling, drainage work and point foundations.

STIHL QuickStop Drill Brake

The STIHL QuickStop drill brake is designed to improve operator protection if the drilling tool becomes jammed in the ground. If the activating lever contacts the operator’s thigh, the brake disconnects the engine’s driving force from the drilling tool. A trapped bit can then be unscrewed from the hole by turning the machine in the opposite direction.

High-Torque STIHL 4-MIX Engine

The 36.3cm³ STIHL 4-MIX engine combines strong torque with a compact design and a distinctive, comparatively smooth operating sound. It uses mixture lubrication, so there is no separate engine-oil circuit. Always use the correct fuel mixture and follow the instructions supplied with the machine.

Masseys stocks a range of suitable garden machinery fuel and oil. Contact our team if you need advice on the correct fuel for your BT 131.

Designed for Comfortable, Controlled Operation

The stable anti-vibration handle frame helps reduce the amount of engine vibration transferred to the operator. A large support cushion rests against the body during drilling, helping the user guide the earth auger smoothly and accurately.

The controls are grouped together on the multi-function handle, helping the operator maintain a secure grip while starting, stopping and controlling the machine.

Longer Working Periods Between Refuelling

A 0.71-litre fuel tank supports longer working periods between refuelling, while the long-life air-filtration system is designed to extend the intervals between filter maintenance.

Typical Uses for the STIHL BT 131

• Drilling holes for fence posts
• Professional fencing installation
• Planting trees, shrubs and larger plants
• Creating planting and drainage holes
• Preparing small point foundations
• Horticultural and agricultural groundworks
• Taking soil samples with a suitable drilling tool

Planning a new fencing project? Browse Masseys’ range of fence panels or speak to our team about the equipment and materials required.

STIHL BT 131 Technical Specifications

Engine type	STIHL 4-MIX petrol engine with mixture lubrication
Displacement	36.3cm³
Power output	1.4kW / 1.9hp
Maximum spindle speed	200rpm
Maximum torque at drilling spindle	81Nm
Maximum drilling diameter	Up to 300mm with a compatible drilling tool
Fuel tank capacity	0.71 litres
Weight	10kg without fuel or drilling tool
Product type	Professional single-operator earth auger
STIHL part number	43130112120

Product specifications are subject to manufacturer updates. The maximum drilling diameter depends on the compatible drilling tool fitted and the application.

What Is Included?

• STIHL BT 131 petrol earth auger power unit
• Support cushion
• Instruction documentation

Earth auger bits, plant spirals, extensions and other drilling tools are not included unless specifically stated in the product options.

Why Masseys Recommends the STIHL BT 131

At Masseys, we recommend the STIHL BT 131 for professional users, landscapers, fencing contractors and customers who regularly need to create accurate holes in demanding ground. Its combination of strong low-speed torque, a robust drilling gearbox and the QuickStop drill brake makes it considerably better suited to repetitive post-hole and planting work than adapting a conventional drill or relying entirely on manual digging.

We particularly rate the stable anti-vibration frame and large support cushion, which make the machine easier to guide when several holes need to be drilled during the same job. It is a specialist professional machine rather than a lightweight tool for occasional garden use, so our team can also help you choose the correct drilling tool for the ground conditions and hole diameter required.

Masseys is an established STIHL machinery dealer based in Swadlincote, Derbyshire. We provide practical product advice before purchase and offer ongoing garden machinery servicing and repairs.

For advice on the STIHL BT 131, compatible auger bits, collection or delivery, please contact Masseys.

Frequently Asked Questions

Does the STIHL BT 131 include an auger bit?

No. The BT 131 is supplied as the power unit and the drilling tool or earth auger bit must be selected separately. This allows the correct bit diameter to be chosen for the intended job.

What is the maximum hole diameter for the STIHL BT 131?

The BT 131 can drill holes up to 300mm in diameter when fitted with a suitable compatible STIHL drilling tool.

Is the STIHL BT 131 a one-person earth auger?

Yes. The BT 131 is designed as a professional single-operator earth auger. Its handle frame, support cushion and integrated controls are designed to help one user guide and operate the machine.

What jobs is the STIHL BT 131 suitable for?

It is suitable for drilling fence-post holes, planting holes, drainage holes, point foundations and soil-sampling holes when fitted with the appropriate drilling tool.

What type of engine does the STIHL BT 131 use?

It uses a 36.3cm³ STIHL 4-MIX engine producing 1.4kW. The engine uses mixture lubrication, so the correct petrol and oil mixture must be used in accordance with the instruction manual.

Can Masseys service the STIHL BT 131?

Yes. Masseys operates a garden machinery workshop and can provide servicing and repair support for STIHL machinery. Contact the workshop before visiting to confirm current booking availability.

Important Safety Information

Always read the supplied instruction manual before operating the machine. Check the proposed drilling area for underground electrical cables, gas pipes, water pipes, drainage systems and other buried services before beginning work. Use appropriate personal protective equipment and only fit drilling tools approved as compatible with the STIHL BT 131.