On A New Tack

 Why? The original raw water impeller pump in the Nanni N4.38 engine is a Johnson Pump 10-24334-01, which is known to develop a leak prematurely at the seal. Other Vision 444 owners have had to replace these original pumps after between 300 and 1000 hours, when they start to leak. Fortunately, Johnson has created a 10-24334-11 part number that supposedly corrects this problem.   Parts, tools and supplies you will need a new Water pump or two, preferable the 10-24224-11 model. We ordered ours from marinepumpdirect.com for ~$250 each.  If they are not in stock, email them at info@marinegate.com . a 27mm deep, 6 point socket .   You don't need a super quality one; it's just to remove the hose barb. Trust me, you need a socket. Ratchet (likely a 1/2" drive) for above. Screwdrvier or nutdriver to remove the hose clamps Hose Remover Tool Optional, but super helpful all over the boat to break the seal when removing hoses! Teflon tape This can be white or yel...