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725ex Series™

7.25 Gross Torque

High performance. Low hassle. The 725ex Series™ lawn mower engine brings you the durability, power and reduced emissions you want in a great mowing experience. These push mower engines come standard with a Super Lo-Tone™ Muffler for quieter operation, Maxi-Clean™ air cleaner for greaner operation and the ReadyStart® starting system. Everything you need for a simple, superior cut.

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*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.

725ex Series™ is rated 2.6154 out of 5 by 39.
Rated 2 out of 5 by from Starts and runs great...when it wants to When it is running it is great. When it is not, it's frustrating. I've had it for a year now on a Troy-Bilt Mower. Fouled the first spark plug within 5 hours of use. I changed the oil at the 5 hour mark and replaced the plug. Ran great, always started first pull, and then it wouldn't. The air filter had gas in it (I don't spill gas all over the mower, so it's came from the carb). I changed the air filter, didn't have anymore gas in the new one after a few uses. Went to start it up yesterday and it cranked but immediately puffed a black cloud, shut off and wouldn't fire again. I've taken everything but the carb off and cleaned and no luck. I have less than 25 hours on the motor and it is still under warranty, so I took it on back to let them look at it before I tear into it to fix it myself. On top of all of this, it drinks gas like it's the job. I have a 1/4 acre lot and have to fill it at least twice to mow it.
Date published: 2014-08-14
Rated 2 out of 5 by from Fouls Plugs Easy to start, WHEN IT STARTS! I bought a brand new Brute lawn mower with a Briggs & Stratton 725ex engine from Walmart in March of this year. It seemed like a great mower for the price. It was easy to assemble, started easy, and worked great for 2 months. Then it wouldn't start. It had fuel and oil, and would crank easy, so I replaced the hard to find Spark Plug. It ran great for another month, and then wouldn't start AGAIN! So I replaced the Spark Plug AGAIN, and it started right up. I did some research, and turns out it's very common on this engine. It's a easy fix, but I'm really getting tired of it dying right in the middle of mowing my lawn, and having to search for, and buy $5 spark plugs. I had a older mower with a Briggs & Stratton mower that ran great for over 10 years, and I cant get this one to stay running for more than a month!
Date published: 2012-09-02
Rated 1 out of 5 by from Fouls plugs The easystart name is a joke. Bought a Troybilt with this engine for mowing a small patch of grass and some trim work. It fouled the original plug after being run around 5 times. Had to wait a week for the shop to get in the spark plug because it was special order. Ran it twice and it is back in the shop because it won't start again. I suspect it is something wrong with the automatic choke that is causing the problem.
Date published: 2012-08-18
Rated 1 out of 5 by from Would not recommend!!!! I used this mower 4 times, the 4th time was very hard to start but started. The next week would not start at all and yes it has oil and gas and cleaned. It will just not start. Not worth the money at all!
Date published: 2012-08-15
Rated 5 out of 5 by from Simple and proven design At first I was skeptical about Easy Start but I am a firm believer now as my Troy BIlt with this type of engine is going on its fifth season without any problems - EVER. It always starts on the first or second pull, cold or hot.The L-head design is as simple and proven as it gets so it is obvious that some of the other reviewers don't know how to maintain equipment properly (drain fuel at end of season, clean air filter, change oil, plug, etc).By the way, this is the most reliable L-head I've ever owned (since the 1970's) and I never get that "they don't make them like they used to" feeling with this engine at all. However I can't say the same about modern mower chassis' though (plastic wheels/components, cheap cables, flimsy handles, etc).
Date published: 2015-04-25
Rated 1 out of 5 by from Frustrating Was bought in July. Worked great at first and used for less than 2 hours in total. Went to start it the other day and can't get it to turn over. Appears to be a poor design with all the similar complaints. Fresh gas and new spark plug and still won't start. Now I'm sure b&s is going to tell me it's under warranty and to take it to a dealer however it's easier said then done...
Date published: 2014-11-23
Rated 1 out of 5 by from .very disappointed works great for a while but then after a few months it started having troubles starting and the spark plug is always getting flooded and goes bad fast
Date published: 2014-08-08
Rated 1 out of 5 by from ** I Am So Disappointed! ** I was so excited after purchasing a Snapper/Self-Propel - Briggs and Stratton 72.5 EX Series. Since I take pride in my lawn and its appearance, purchasing this new lawn mower made me feel as if I was purchasing a brand new car.This excitement was short-lived once the engine started overheating. Once it did, it will not re-start until the next day. Catastrophic Disaster!! I am so hurt; this terrible engine is keeping me from doing what I LOVE!
Date published: 2014-07-02
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