1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 130Get this manual
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TIGHTENING TORQUE Part to be tightened ENGINE: 1st Crankcase 2nd Cylinder head Exhaust cover Spark plug Flywheel Nut 1st 2nd 1st 2nd Bolt Bolt Bolt Bolt Bolt Bolt Bolt Bolt M6 Pl.0 M8 Pl.2 M6 Pl.0 M8