2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 83Get this manual
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MEASURING THE COMPRESSION PRESSURE
Compression pressure (at sea level): Standard: 1,400 kPa (14 kgcm2, 203 psi) Minimum: 1,218 kPa (12.2 kgcm2, 177 psi) Maximum: 1,568 kPa (15.7 kgcm2, 227 psi)