1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 93Get this manual
INSPECTION
151000-0
INSPECTION
GEAR CASE
1U sin soft brush and solv nt, cle th case and ater assa e2Visu ally insp ect th ar case for cracks, corrosio or distortio nIf crack or xcessiv corrosio is fo d, re place th ar case
151500-0
BEARING HOUSING