2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 30Get this manual
0B-4 Maintenance and Tune-Up: 3) Place container under engine oil drain plug4) Remove engine oil drain plug (2) and gasket (3) to drain engine oil6) Pour the recommended engine oil into oil filler opening, then install oil filler capRecommended Engine Oil stroke motor oil NMMA FC-W classification: SG, SH, SJ, SL, SMor API classification: SG, SH, SJ, SL, SM Viscosity rating: NMMA FC-W 10W-40 or SAE 10W-40 Engine oil amounts Oil change only: 4.0 (4.23.5 USImp.qt) Oil filter change: 4.3 (4.53.8 USImp.qt) I9J011020038-01
5) Install new gasket and oil drain plugTighten engine oil drain plug to specified torqueCAUTION To avoid water entry into oil pan or oil leakage into the environment do not reuse gasket once removedAlways use new gasketI9J011020039-01
Tightening torque Engine oil drain plug (a): 13 Nm (1.3 kgf-m, 9.5 lbf-ft)