Briggs and Stratton 27HP Engine Lost Compression, What Happened?

A Simplicity Zero Turn Mower with less than 130hours on it lost compression and stopped running while cutting grass. A quick level check of the oil indicated that it was at the low oil add line. Some quick diagnostics indicated that it threw a rod and broke the cam. The valves were likely damaged for both cylinders also. This will be a very expensive repair!

[@markusedma]

Another Breaks & Scatters bites the dust… 95 percent of the time the block is scrap too as it breaks the cam journals when those engines throw a rod.. poor owner.

[@jaredpena1068]

What's the compression supposed to be on these things

[@davekimbler2308]

You can get a brand new 18hp Briggs v-twin Vangaurd for under $1,000 then you have a $4k lawnmower ! 20 minute job ! Harbor Freight has a 22hp V-twin for $860 + tax out the door !

[@mgomez5606]

Connecting rod.

[@ashleyrichards4241]

Yes we want to see a teardown

[@mikeshobbiesandrandomstuff]

Definitely be fun to see the carnage inside

[@refugeinc.159]

Typical Briggs. I'd just look around for a used 20-something HP riding mower for cheap. People basically give them away when the carbs get dirty. Throw the engine in that frame since its a nice zero turn mower.

[@trecedaves3159]

I'd love to see it torn down to see the damage done. In my area at least I've been able to find motors cheap. I replaced the one on my buddies zero turn for 100 dollars all in. Scrap yard is your friend in this case

[@Joshtheweatherman]

Some Briggs & Stratton engines aren’t as good as they used to be. Pretty sad that a commercial engine broke at 120 hours. It looks like it’s been maintained pretty well too.

[@mgomez5606]

Do these engines have fuel injectors? Was browsing ebay and referenced this size engine so I wanted to see it.

[@shaney2000]

Awh Harvey, I was looking forward to u stripping it down and seeing what happened to it!!!!!😪😪. U sure are No mustie!!!!🤣😂

[@jasonturner4265]

You started so good and then went way off in left field??? Thought I finally found someone with a teardown on this motor!!!!

[@countrygentleman4084]

I'll be interested in it

[@atvseatexchange2176]

Darn, something a PZ27 can't fix. Is this the last we'll see of this machine? Will the towel be throw in? Stay tuned and find out fans.

[@russellmoore2237]

Same problem here , mz61 with less than 125hrs Endurance 27hp . 1,000 for a new engine. SAD !

[@blanem9077]

What did you pay for it, from a friend or a Facebook deal?

[@austinicholas]

Same engine. Threw a rod at 83.6hrs. Briggs is refusing to replace /repair.

[@finesgarrison6972]

Sheer key is broke on flywheel

[@thatkidintheranger9014]

A zero turn , thats the first