Efficient and capable engine design that stands the test of time.
Anti-Vibration System - AVS®: Provides a smoother ride and more comfort.
Made in the USA: Made in the USA of US and global parts.
Advanced Debris Management System: Keeps the engine clean by deflecting and ejecting grass and debris for a longer engine life.
Model Number: 31R9
Engine Displacement (cc): 500
Engine Configuration: Vertical Shaft
Length (in): 18.9
Height (in): 12.9
Bore (in): 3.56
Engine Fuel: Gasoline
Lubrication System: Dura-Lube Splash Lubrication
Oil Filter: N/A
Air Filter: Cartridge Air Cleaner with Advanced Debris Management
HP (gross) **: 17.50.0
Number of Cylinders: Single
OHV Engine: Yes
Width (in): 15.5
Weight (lbs): 77
Stroke (in): 3.06
Fuel Tank Capacity (gal): N/A
Oil Capacity (oz): 48
Starter: Electric start, recoil optional
*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton. **All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.