Yamaha 25BMH 30HMH Factory Service Manual, Page 16Get this manual
GEN INFO CHAPTER GENERAL INFORMATION IDENTIFICATION 1-1 SERIAL NUMBER 1-1 STARTING SERIAL NUMBERS 1-1 SAFETY WHILE WORKING 1-2 FIRE PREVENTION 1-2 VENTILATION 1-2 SELF-PROTECTION 1-2 OILS, GREASES AND SEALING FLUIDS 1-2 GOOD WORKING PRACTICES 1-3 DISASSEMBLY AND ASSEMBLY 1-4 SPECIAL TOOLS 1-5 MEASURING 1-5 REMOVING AND INSTALLING 1-7 FEATURES AND BENEFITS 1-8 POWER UNIT 1-8 IGNITION SYSTEM 1-9 IGNITION TIMING IN NEUTRAL 1-10 COOLING SYSTEM 1-11 TILLER HANDLE 1-13 BRACKET AND BOTTOM COWLING 1-14 TECHNICAL TIPS 1-15 CARBURETOR 1-15 IGNITION SYSTEM 1-18