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Old 10-16-2013
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Re: Yanmar 3YM20 New Raw Water Pump Install Questions

1. Raw water = Sea water
2. Don't tighten the belt too tight like mentioned in manual. A little slack prevents damage to pump shaft.
3. You should be able to turn the pump/pulley without belt, its tight but doable.
4. You could grease the impeller with glycerine or Superlube.
5. Don't throw away your old pump. Recondition it and keep as spare.
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2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium
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