Replacement riding mower engine

Just blew the engine in my riding mower. The engine is a Briggs and Stratton I/C SyncroBalanced 12.5 HP. Model is 289707 and Type is 0154-01. I understand this engine is no longer made, and that a replacement engine needs to be carefully chosen to make sure it will fit and match up with the starter, mounting holes, etc.

There are two engines presently on eBay which look like they could fit. Both are B & S with one identified as Model 28R707-NTML ( 13 HP). The other is 12.5 HP and listed as Type 1179-E1. Would either of these work or do I need to ask for more information? Local repair shops want $ 850.00 to fix so I may have to buy a new mower if I cannot find a reasonably priced replacement motor.

 

Most Replacements Come With Everthing... Shaft Diameter Is A Good Start And The Engine Mount Flange .. They Have To Fit You Engine Pulley And Frame Mount.. Also Yo May Have To Wire It In For Charging System And Ignition And Cut Off... Have You Checked The B&s Site For A Rebuilt Engine...

 

you might be able to find a short block. It would be cheaper for sure.

S\T

 

Not a reliable engine to buy used. Balance system was poor and they always wore out.

S/T

 

Thats Why They Used Then In Craftmans ""job Secruity""

 

I would suggest the short block. $850.00 is a heck of a price to re-power the mower.

Your engine should have a 1" diameter crankshaft, 3 5/32" long, and threaded for a 7/16" - 20 bolt. Any briggs single cylinder horizontal engine near that hp range should fit the bolt pattern and have the same starter setup and a compatable throttle setup. Wiring may vary a bit, but nothing that can't be easily adapted.

 

Unfortunately, they wanted $ 800 for the short block, including installation. I opted to buy a new Yardman with hydrostatic transmision. More power, wider cut, quieter, less polluting, and with a buyer for the old machine my cost was about the same as a repair. A no-brainer. Thanks to all. Your input made my decision easy.

 

Good luck with it! Good choice on the hydro tranny in that mower. The standards with variadrive have been having a LOT of problems in recent models.

 

thet may not be reliable to buy used but i have mowed over an acre for 16 years with the same mower with a289707 engine.