Yamaha 25BMH 30HMH Factory Service Manual, Page 278Get this manual

Yamaha 25BMH 30HMH Factory Service Manual, Page 278

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WATER PUMP
Check: Impeller Insert cartridge Cracksdamagewear Replace
CHECKING THE WOODRUFF KEY
Check: Woodruff key Damagewear Replace
INSTALLING THE IMPELLER AND WATER PUMP HOU