1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 79Get this manual
ASSEMBLY AND ADJUSTMENTINSTALLATION
REED VALVE
1Install th re alv asse bly, and th asket re alv plate to th intake nifoldReed valve assembly: Nm (0.4 kgf, 2.9 ft lb)
G 76000-0
INTAKE MANIFOLD
1Install th nifold asse bly to th cra nkcase, and tig hte th olts in se nce and in ste ps of torq Tig hte nin se nce