1987-2003 Yamaha YFZ350 Banshee supplementary service manual, Page 154Get this manual
Measurement steps: Attach the Cooling System Tester (YU-24460-01) to the radiator cap NOTE: Use Adapter (YU-33984) () 1
Apply the specified pressure for 10 seconds, and make sure there is no pressure drop
4Inspect: Cooling system Decrease of pressure (leaks)Repairas requiredInspection steps: Attach the Cooling System Tester) (YU-24460-01) to the radiatorApply 98.1 kPa (1.0 kgcm2, 14 lbin2) pressureMeasure the indicated pressure with gauge