1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 67Get this manual
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Tightening order and tightening torque: Tightening torque: 1st step Nm (0.8 mkg, 5.8 ftlb) 2nd step 17 Nm (17 kg, 12 ftlb)
2 Gasket 4 Exhaust outer cover
Tightening order and tighte