Yamaha 115-225 HP Outboards Service Manual, Page 171Get this manual
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WATER PUMP INSTALLATION 1) Aligning with the dowel-pins, install the plate on the gear-case2) Install the key in the keyway on the driveshaft, and insert the impeller
3) Grease the impeller, and install the waterpump housing, tuming the drive-shaft clockwise, then tighten the bolts
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