Yamaha F100B F100C Outboards Factory Service Manual, Page 49Get this manual
Tightening torques Tightening torques Specified torques
Part to be tightened Power unit Flywheel magnet nut Negative battery lead bolt Positive battery lead nut Power unit bolt Apron bolt Drive sprocket nut Tensioner bolt Driven sprocket bolt Cover screw Hour meter screw Ignition coil bolt Ground lead bolt Oil pressure switch Oil pressure switch lead bolt Cylinder head cover bolt Breather cover screw Fuel pump bracket bolt Camshaft cap bolt Spark plug 1st 2nd 1st 2nd 3rd 1st 2nd 1st 2nd Thread size M8 M10 M6 M10 M10 M6 M6 M6 M4 M6 M4 M7 M7 M8 M10 M6 M14 1st 2nd 1st 2nd 1st 2nd M8 M10 M8 Tightening torques Nm kgfm ftlb 186 42 265 39 60 17 17 25 14 28 15 30 12 18 23 14 28 19 18 18.6 0.9 0.9 4.2 0.4 26.5 3.9 6.0 0.4 0.2 0.8 0.8 0.8 0.2 0.8 0.2 1.7 0.8 1.7 2.5 1.4 2.8 1.5 3.0 Turn 90 0.6 1.2 1.8 2.3 1.4 2.8 1.9 Turn 60 1.8 Turn 90 135 6.5 6.5 30 2.9 192 28 43 2.9 1.4 5.8 5.8 5.8 1.4 5.8 1.4 12 5.8 12 18 10 20 11 22 4.3 8.7 13 17 10 20 14 13