1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 94Get this manual
INSPECTION
153501-0
IMPELLER AND CARTRIDGE INSERT
1Visu ally insp ect th eller for ar, cracks, distortio or urnin gIf is fo d, re place
154001-0
OIL-SEAL HOUSING (located under the impeller)
1U sin soft brush and solv nt, cle th oil-se al usin g2Visu ally insp ect th usin for cracks or corrosio nIf crack dor xcessiv corrosio is fo d, re place th oil-se al usin g154501-0