This is the Briggs & Stratton Professional Snow Series 21.0 GT 420cc Horizontal Shaft Engine 25M137-0005-F1.
This genuine 420cc Briggs and Stratton single cylinder engines are specially designed to provide more power for quick and easy removal of all types of snow.
With a power rating of 21 ft lbs of gross torque, this engine features a recoil starter plus a 110 volt electric starter and maintenance-free Magnetron electronic ignition.
With a manufacturer limited warranty of 2 years consumer use 90 days commercial use, Briggs and Stratton provides power that you can trust.
This engine includes an installed muffler and a fuel tank.
Features:
- Cold Weather Operation: Qualified to start down to -20 degrees Fahrenheit (-28.8C).
- Robust Construction: Features a Dura-Bore cast iron cylinder sleeve for extended life.
- User-Friendly Design: Includes oversized controls for easy operation while wearing gloves or mittens.
- Quiet Operation: Equipped with a Super Lo-Tone muffler for quieter performance.
- Included Components: Comes with an installed muffler and a fuel tank
Product Specifications:
- Engine Type: Single-cylinder, 4-stroke, Overhead Valve (OHV)
- Mounting: Horizontal shaft
- Displacement: 420 cc
- Gross Torque: 21.0 ft-lbs (approximately 9.5 Nm)
- Starter Type: Recoil (manual) starter plus a 110V electric starter
- Ignition System: Maintenance-free Magnetron electronic ignition
- Bore/Stroke: 3.54 in. x 2.6 in.
- Oil Capacity: 1.2 qt (1.1 L)
- Fuel Tank Capacity: 7.0 qt (6.6 L)
- Crankshaft Size: 3/4″ diameter x 2-1/2″ length
- Weight: Approximately 95.0 lbs (dry weight 72 lbs)
Note: Due to the nature of engines and the inability to verify installation, handling, or operating conditions once delivered, this product is not eligible for return.





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