2005 Kawasaki KAF400 Mule 600 and Mule 610 4x4 Service Manual, Page 97Get this manual
ENGINE TOP END 4-15 Valves
Valve Spring Free Length
spring [A] free length Measure the valve less than the service limit, replace the If the free length is valve spring with new oneValve Spring Free Length Standard: 35 mm (1.38 in Service Limit: 32.6 mm (1.28 in
Valve Head Thickness
thickness [A] Measure thehead thicknessofisthe valve head.service limit, If the valve less than the replace the valve with new oneValve Head Thickness Standard: 0.4 mm (0.016 in Service Limit: 0.4 mm (0.016 in