Honda BF35A-BF45A Outboard Motors Shop Manual., Page 26Get this manual
OIL PRESSURE TEST 1) Check the engine oil level (P3-212) Remove the mm screw and oil pressure switch I-
4 mm SCREW
3) Install the pressure gauge attachment (special tool) on the oil pressure gauge that has scale calibrated to maximum of 7-10 kgIcm2 (99-6-142.2 psi) scale and on the outboard motorCAUTION Tighten the gauge attachment N-m (0.9 kg-m, 6.5 ft-lb)Overtightening will damage the threads4) Remove the propeller and set the outboard motor in water tank or apply water the outboard motor with the rinsing plug, and start the engine5) Measure the oil pressure when its temperature reaches
OIL PRESSURE GAUGE 07506-3000000