2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 173Get this manual
1D-31 Engine Mechanical: Assembly Assembly is in the reverse order of disassemblyPay attention to the following points: Tighten the oil gallery plug (1) (cylinder head) to the specified torqueTightening torque Oil gallery plug (Cylinder head) (a): 10 Nm (1.0 kgf-m, 7.0 lb-ft)! Tighten the intake pipe mounting bolts to the specified torqueNOTE Make sure that the "UP" mark "A" faces upTightening torque Intake pipe bolt (a): Nm (0.9 kgf-m, 6.5 lb-ft)
CAUTION
Replace the gasket with new one