Yamaha 115-225 HP Outboards Service Manual, Page 238Get this manual
CHAPTER TROUBLESHOOTING
TROUBLESHOOTING DIAGRAM 9-1
HOW TO TROUBLE-SHOOT 9-1
ENGINE WILL NOT START 9-2 ROUGH IDLING 9-8 ENGINE STALLS 9-9 ENGINE WILL NOT STOP 9-10 POWER TRIM AN TILT SYSTEM 9-11 GEAR SHIFT IS IMPOSSIBLE OR HARD 9-13 OIL INJECTION SYSTEM 9-14 MICRO COMPUTER SYSTEM (225) 9-16