Yamaha 25BMH 30HMH Factory Service Manual, Page 102Get this manual
CHK ADJ CHAPTER PERIODIC CHECK AND ADJUSTMENT MAINTENANCE INTERVAL CHART 3-1 TOP COWLING 3-2 CHECKING THE TOP COWLING FIT 3-2 FUEL SYSTEM 3-2 CHECKING THE FUEL LINE 3-2 CHECKING THE FUEL FILTER 3-3 CHECKING THE FUEL PUMP 3-3 CHECKING THE FUEL JOINT 3-3 CONTROL SYSTEM 3-4 ADJUSTING THE IGNITION TIMING 3-4 ADJUSTING THE ENGINE IDLE SPEED 3-16 ADJUSTING THE START -IN-GEAR PROTECTION DEVICE 3-18 POWER UNIT 3-19 MEASURING THE COMPRESSION PRESSURE 3-19 COOLING SYSTEM 3-20 CHECKING THE COOLING WATER DISCHARGE 3-20 LOWER UNIT 3-20 CHECKING THE GEAR OIL LEVEL 3-20 CHANGING AND CHECKING THE GEAR OIL 3-20 CHECKING THE LOWER UNIT (FOR AIR LEAKS) .3-21 GENERAL 3-22 CHECKING THE ANODE 3-22 CHECKING THE SPARK PLUGS 3-22 CHECKING THE PROPELLER 3-23 CHECKING BOLTS AND NUTS 3-24 LUBRICATION POINTS 3-24