2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 247Get this manual
POWER UNIT
2Position cylinder head on cylinder3Apply engine oil to cylinder head bolts and tighten them gradually as followsNOTE: Do not forget to install all bolt shown in figure
(a) Tighten all bolts to 50 percent () of specified torque according to sequence in figure" Cylinder head bolt: 1st step 12 mm 43 Nm (4.3 kg-m, 31.1 lb-ft) mm 12 Nm (1.2 kg-m, 8.7 lb-ft) (b) Loosen all bolts to Nm (0 kg-m, lb-ft) according to reverse sequence in figure(c) Again tighten all bolts to 50 percent () of specified torque according to sequence in figure" Cylinder head bolt: 3rd step 12 mm 43 Nm (4.3 kg-m, 31.1 lb-ft) mm 12 Nm (1.2 kg-m, 8.7 lb-ft) (d) Finally tighten all bolts to specified torque according to sequence in figure" Cylinder head bolt: Final step 12 mm 86 Nm (8.6 kg-m, 62.2 lb-ft) mm 23 Nm (2.3 kg-m, 16.6 lb-ft)