Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 239Get this manual
POWER UNIT
(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 11 mm 43 Nm (4.3 kg-m, 31.1 lb-ft) mm 13 Nm (1.2 kg-m, 8.7 lb-ft)