Professional Series™ 850

8.50 Gross Torque

Mowing your lawn has never been this easy or enjoyable. The Professional Series™ 850 push mower engine combine professional-grade power and performance with homeowner-friendly convenience and ease of use. Strong, quiet and durable, these lawn mower engines come standard with the ReadyStart® starting system: No priming. No choking. Just pull and go.

  • Starting Promise. 2 attempts or we fix it free!

    Starts in 2 attempts – or we'll fix it for free.*

  • Briggs & Stratton OHV Engine Design
    Overhead Valve (OHV) Engine Design

    OHV engines run cooler and cleaner for better fuel economy and longer engine life.

  • Super Lo-Tone Engine Muffler

    The quietest lawn mowing experience possible.

  • Have a question? Search our FAQs to find answers related to model specifications, routine maintenance, repair or troubleshooting. Search FAQs »

  • Find genuine Briggs & Stratton repair and/or maintenance parts for your engine or outdoor power equipment to ensure future performance. Purchase Parts »

Torque* 8.5
Engine Displacement (cc) 190
Number of Cylinders Single
Engine Configuration Vertical Shaft
Engine Technology OHV
Length (in) 15.6
Width (in) 12.8
Height (in) 9.4
Weight (lbs) 24.3
Bore (in) 2.7
Stroke (in) 2.0
Engine Fuel Gasoline
Fuel Tank Capacity (gallons) 0.3
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 18
Oil Filter Optional
Starter Recoil, Electric Start Optional
Air Filter Dual-Sealing Commercial-Grade Air Cleaner
Muffler Super Lo-Tone™
Fuel Shutoff Valve Optional
Certified Power Rating

*All power levels are stated gross horsepower at 3600 rpm per SAE J1940 as rated by Briggs & Stratton.

*All power levels are stated gross torque at 2600 rpm per SAE J1940 as rated by Briggs & Stratton.

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