STIHL BT 131 Gas Earth Auger 1.9 HP Professional Post Hole Digger

Professional Ground Drilling Power for Construction, Landscaping & Agriculture

The STIHL BT 131 Professional Gas Earth Auger is engineered to provide exceptional drilling power, reliability, and safety for professionals who need fast and efficient ground penetration in a variety of soil conditions. Whether you’re installing fence posts, planting trees, building decks, performing environmental restoration, or working on construction projects, the BT 131 delivers the performance required to complete demanding jobs with confidence.

Powered by a robust 36.3cc STIHL 4-MIX® engine, producing 1.90 HP (1.40 kW), this professional-grade earth auger combines the advantages of two-stroke power with four-stroke efficiency. The result is excellent torque, lower emissions, reduced fuel consumption, and dependable performance in tough working conditions.

Designed for drilling holes up to 300 mm (12 inches) in diameter, the BT 131 provides impressive digging capability for a wide range of applications. The powerful gearbox and low-speed, high-torque operation ensure smooth drilling performance even in compact soil, clay, and challenging ground conditions.

One of the standout features of the BT 131 is the innovative STIHL QuickStop® Drill Brake. This advanced safety system automatically stops auger rotation if the bit encounters a hard underground obstacle, helping reduce kickback forces and increasing operator safety. The brake also assists with removing jammed auger bits by preventing unwanted reverse rotation.

Built for all-day professional use, the BT 131 features an advanced vibration-dampening frame that significantly reduces operator fatigue while improving comfort and control. The integrated hip pad enhances stability and support during operation, making prolonged drilling tasks easier and more manageable.

Combining professional-grade power, intelligent safety technology, fuel efficiency, and rugged durability, the STIHL BT 131 is the ideal drilling solution for contractors, landscapers, agricultural professionals, and property maintenance crews.

Key Features & Benefits

Powerful STIHL 4-MIX® Engine

• High-performance 36.3cc engine
• Produces 1.90 HP (1.40 kW)
• Excellent low-end torque
• Fuel-efficient operation
• Designed for heavy-duty professional use

Professional Drilling Performance

• Drills holes up to 300 mm (12″) in diameter
• Ideal for post holes and fencing projects
• Excellent penetration in various soil types
• High-torque gearbox for demanding applications
• Reliable performance in tough conditions

STIHL QuickStop® Drill Brake

• Advanced safety braking system
• Stops auger rotation upon striking obstacles
• Helps reduce kickback forces
• Improves operator safety
• Assists with removal of jammed drill bits

Advanced Anti-Vibration System

• Reduces vibration transferred to the operator
• Enhances comfort during extended operation
• Improves control and drilling precision
• Minimizes fatigue throughout the workday

Ergonomic Professional Design

• Comfortable operator positioning
• Enhanced handling and stability
• Balanced weight distribution
• Designed for single-operator use
• Increased productivity on long projects

Integrated Hip Pad

• Provides additional support while drilling
• Improves user comfort
• Reduces body strain
• Enhances control during operation

Long-Life Air Filtration System

• Extended filter service intervals
• Improved engine protection
• Cleaner airflow to the engine
• Reduced maintenance requirements

Simplified Starting System

• Semi-automatic choke lever
• Easy startup procedure
• Reduced risk of engine flooding
• Faster jobsite readiness

Fuel-Efficient Operation

• Low exhaust emissions
• Reduced fuel consumption
• Lower operating costs
• Environmentally responsible performance

Heavy-Duty Professional Construction

• Built for demanding commercial applications
• Durable frame and drivetrain components
• Reliable performance under heavy workloads
• Long service life

Ideal Applications

The STIHL BT 131 is perfect for:

• Fence post installation
• Agricultural fencing projects
• Tree planting
• Shrub and landscape planting
• Construction site drilling
• Deck and foundation projects
• Utility pole installation
• Environmental restoration work
• Sign installation
• Irrigation system projects
• Property maintenance
• Professional landscaping

Technical Specifications

Specification	Details
Brand	STIHL
Model	BT 131
Product Type	Gasoline Earth Auger
Engine Type	STIHL 4-MIX® Engine
Engine Displacement	36.3 cc (2.2 cu-in)
Power Output	1.40 kW
Horsepower	1.90 HP
Spindle Speed (1st Gear)	200 RPM
Maximum Hole Diameter	300 mm (12″)
Weight (Without Fuel & Bit)	22 lbs
Starting System	Semi-Automatic Choke
Safety System	STIHL QuickStop® Drill Brake
Air Filtration System	Long-Life Filtration
Anti-Vibration System	Yes
Hip Pad	Integrated
Emissions	Low Exhaust Emission
Recommended Use	Professional Ground Drilling

Why Choose the STIHL BT 131?

✔ Powerful 1.90 HP STIHL 4-MIX® engine

✔ Professional-grade earth auger performance

✔ Drills holes up to 12 inches in diameter

✔ Advanced STIHL QuickStop® safety brake

✔ Fuel-efficient low-emission operation

✔ Long-life air filtration system

✔ Ergonomic anti-vibration design

✔ Integrated hip pad for operator comfort

✔ Easy starting and reliable performance

✔ Built for contractors, landscapers, and farmers

✔ Heavy-duty commercial durability

✔ Trusted STIHL engineering and reliability