1985 Honda Odyssey 350 FL350R Shop Manual, Page 58Get this manual
CYLINDER HEADCYLINDERPISTON INSTALLATION Install new gasket with UP mark facing upward(1) UP MARK
Install the cylinder head and cylinder head nutsTighten the nuts to the specified torque in criscross pattern in 2-3 steps
TORQUE 25-29 Nm (2.5-2.9 kg-m, 18-21 ft-Ib)
Connect the spark plug cap to the spark plug