2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 257Get this manual
Electrical system
OFF ON START
2Check the engine stop lanyard switch continuity between the engine stop lanyard switch connector and terminal (engine stop lanyard switch end)Replace if out of specification
Engine stop lanyard switch continuity: White (W) Black (B) Switch position Clip installed Clip removed
S6AG8150
S6AG8160
Continuity No Yes
3Turn the engine start switch to "OFF 4Connect the 10-pin main harness coupler
Engine stop lanyard switch continuity: White (W) Black (B) Switch position Clip installed Engine stop button pushed Clip removed Continuity No Yes Yes