Yamaha Marine Outboards Factory Service / Repair/ Workshop Manual 225G 250B L250B, Page 29Get this manual
MAINTENANCE SPECIFICATIONS
TIGHTENING TORQUES
SPECIFIED TORQUES
Part to be tightened POWER UNIT Intake silencer Fuel injection unit Fuel filter nut holder Oil pump Emergency switch Flywheel magnet assembly Negative battery lead Junction box cover Power unit mount Starter motor lead Atmospheric pressure sensor Intake air temperature sensor Shift cutoff switch Starter motor Oxygen density sensor cover Oxygen density sensor bracket Oxygen density sensor Knocking sensor Engine cooling water temperature sensor Reed valve assembly Reed valve Reed valve stopper 1st Pressure control valve cover 2nd Spark plug 1st Cylinder head cover 2nd 1st Cylinder head 2nd 1st Exhaust cover 2nd Torsional damper 1st 2nd Crankcase 1st 2nd 1st 2nd Connecting rod 3rd 4th 5th Thread size M6 M6 M6 M6 M20 M8 M5 M8 M6 M6 M12 M4 M8 M6 M6 M18 M6 M5 M3 M6 M14 M6 M8 M6 M32 M6 M10 Tightening torques kgf ft lb 0.3 1.0 0.8 0.7 0.4 19 1.8 0.3 2.1 0.9 0.3 0.8 0.3 3.0 0.9 1.4 4.9 2.8 1.5 1.0 0.3 0.1 0.4 0.8 2.5 0.4 0.8 1.5 2.8 0.4 0.8 10 0.4 0.8 2.0 4.0 2.8 4.5 2.8 4.5 2.2 7.2 5.8 5.1 2.9 137 13 2.2 15 6.5 2.2 5.8 2.2 22 6.5 10 35 20 11 7.2 2.2 0.7 2.9 5.8 18 2.9 5.8 11 20 2.9 5.8 72 2.9 5.8 14 29 20 33 20 33