Quiet Power Technology™ Series

6.75-8.75 Gross Torque

Briggs & Stratton’s Quiet Power Technology™ (QPT®) is up to 65 percent quieter* so you can have a conversation and take care of yard work earlier in the day or later in the evening. This quiet engine also doubles as an easy start lawn mower equipped with the Briggs & Stratton ReadyStart® Starting System. No prime and no choke — just pull for power! Strong, durable, cleaner running and our quietest lawn mower engine yet. New for 2016: Optional feature includes Just Check & Add™, never change the oil, and up to 60% quieter!

  • See how easy engine starting can be. No prime, no choke–just pull for power.

  • Dual-Sealing Commercial-Grade Air Management System

    Reduces harmful yard debris.

  • Lawn Mower Engine Torque

    Cubic centimeters (cc) only measure the size of the engine on your lawn mower or outdoor power equipment. Torque measures the power that rotates the blade. Maximize your mowing power.

  • Avoid Lawn Mower Engine Damage

    Look Before you pump fuel into your lawn mower and help avoid engine damage. Do not use any fuel containing greater than 10 percent ethanol (E10) in the engine on your outdoor power equipment.

  • Super Lo-Tone™ Engine Muffler

    A quieter lawn mowing experience.

  • 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* 6.75
Engine Displacement (cc) 163
Number of Cylinders Single
Engine Configuration Vertical Shaft
Engine Technology OHV
Length (in) 13.8
Width (in) 12.5
Height (in) 10
Weight (lbs) 18.8
Bore (in) 2.69
Stroke (in) 1.75
Engine Fuel Gasoline
Fuel Tank Capacity (gallons) 0.27
Lubrication System Dura-Lube Splash Lubrication
Oil Capacity (oz) 15
Oil Filter N/A
Starter ReadyStart®
Air Filter Dual-Sealing Paper Element
Muffler QPT® Performance Muffler
Fuel Shutoff Valve N/A
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.

New 2014: 725 Quiet Power Technology is rated 4.5312 out of 5 by 32.
Rated 1 out of 5 by from I would give it 0 starts but that wasn't an option. Since this new engine can't be started I guess it is quiet. I need to take it to a local repair center to get a brand new mower to start???
Date published: 2014-08-26
Rated 5 out of 5 by from B&S 20hp Intek My John Deere L118 was purchased 10 years ago. The 20hp B&S Intek has not ever failed to start. We have close to 320 hours on the engine. Annually I pull maintenance on the engine, clean an gap the plugs, change the oil & filter, new air filter and we're ready to go engine wise. Then oil filter an changes and air filter cleaning every 35 hours. It cuts grass weekly, and pulls leaf relief duty as well in the fall. Briggs & Stratton and John Deere are a valued combination for us. We couldn't keep out place maintanedwithout the tractor.
Date published: 2014-02-20
Rated 4 out of 5 by from quiet and easy start Noticeably quieter without the blade attached. Would like to hear the difference with a blade.
Date published: 2015-03-06
Rated 5 out of 5 by from very quiet Easy starting. Compared to other mowers it's much more quiet.
Date published: 2015-03-06
Rated 4 out of 5 by from Almost lives up to the hype Bought a new mower with a QPT engine to replace a worn out 25 year old mower.The engine is definitely smoother and quieter than my older mower. However mine is sometimes difficult to start when when hot, Aside from that it seems to be a very good engine, too early to tell about durability.
Date published: 2015-09-12
Rated 5 out of 5 by from so quiet grwat how it starts so easily. Love the hose cleaning system.
Date published: 2015-03-06
Rated 5 out of 5 by from I could talk over it front wheel drive was helpful. 150 hours for oil change is longer than it used to be.
Date published: 2015-03-06
Rated 4 out of 5 by from quiet Enjoyed the quiet. Quieter than my current craftsman!
Date published: 2015-03-06
  • 2016-02-13T06:00CST
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