What Should My Compression In PSI Be?
Around 550 TO 640psi is typically what they would have left the factory with. A tractor will become hard to start at around 400. you can test it with this -->
http://www.hoyetractor.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=CT-4150
http://www.hoyetractor.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=CT-4150