Crankcase ventilation

[Magnum]

Is there a crankcase vent valve on Kohler CH20 engine. Main seal blew out. Mechanic said cylinder walls were scored. Replaced engine as labour to repair would equal replacement costs. I do regular oil changes but a friend said perhaps it blew the seal due to build up of pressure. Used to change pcv valve on my vehicles? Just wondering.

 

[mechanic mark]

http://www.kohlerengines.com/onlinecatalog/pdf/24_690_06_EN.pdf read through this manual

 

[motoman]

Scoring likely due to ingested dirt around air filter. My Intek has a notoriously bad air filter seal design. Dirt contains cutting particles suitable to use on a lathe. Sorry to hear this.