2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 260Get this manual
Engine electric control system Oil pressure switch continuity: Oil pressure switch Ground Oil pressure 49.0 kPa (0.490 kgfcm7.105 psi) below 49.0 kPa (0.490 kgfcm2, 7.105 psi) above Continuity Yes No
8Connect the yellowblack (YB) lead to the positive penlight battery terminal (1.5 V) and connect the pinkblack (PB) lead to the negative terminal, and then check that the warning indicator comes onReplace the warning indicator assembly if it does not come on
8Install the oil pressure switch, and then connect the oil pressure switch connector
Checking the warning indicator assembly
S6AG8300
1Disconnect the thermoswitch connectors, and then ground the grayblack (GyB) lead (wiring harness end)2Start the engine and operate it at engine idle speed for at least 120 seconds, and then check that the overheat warning indicator comes on3Disconnect the oil pressure switch connector, and then ground the pink (P) lead (wiring harness end)4Start the engine, increase the engine speed to approximately 2,000 rmin, and check that the oil pressure warning indicator comes on after 10 seconds5Push the engine stop button(Tiller handle model) Turn the engine start switch to "OFF (Remote control model) 6Connect the thermoswitch connectors and oil pressure switch lead terminal7Disconnect the warning indicator assembly coupler