Service your Sea Water / Raw Water Pump. How it's cooled. Part 2 Yanmar Sailboat Engine.

[@spelunkerd]

Great point about polarity of the lobes not mattering, especially with a new flexible impeller.

[@SVImpavidus]

Thanks mate. We hear so much waffle about this and the truth is it is not a problem. We need to adjust the tappet clearances at some time in the near future. That is going to be fun as we cannot see the timing marks. 😉 Sail Safe mate. Ant & Cid

[@marcobaldan8153]

Another excellent video, thanks Ant and Cid! 🙂
On my new/old sailboat (Amel Sharki), the Yanmar 4JH5E raw water pump is even more difficult to access, so I use an extractor that screws up on a threaded impeller.

[@marcobaldan8153]

Wanted to add the hpoto of the extractor with impeller but seems not possible here 🙂

[@SVImpavidus]

Not enough room 😉

[@pmjwhite]

Hi Ant, such a useful video, especially for, me using my boat! Very timely. You don't mention the gasket though - should I use it?

[@SVImpavidus]

Yes you do. Some are paper and some pumps have an O ring on the front. I think we did a video in Mersin with your pumps. Be sure the shaft is not worn on the old pump Peter. Sail Safe mate. Ant & Cid

[@Karma-fp7ho]

Good info about the blade direction- it’s so confusing when you are upside down installing these and trying to remember which way!

[@SVImpavidus]

Glad it's helped. Checkout our other videos. Sail Safe. Ant & Cid

[@trevhedges]

Cheers mate! 😊

[@SVImpavidus]

No problem 👍

[@PaulNorton-ti1fy]

Hi I have just used silicon lubricant is that ok ?

[@SVImpavidus]

It depends on the type of rubber that your impeller is made from. It should be ok if it is not EPDM. Sail Safe mate. Ant & Cid

[@QuaeroveritasJustcallmeQ]

What a bloody awkward spot for the raw water pump.

[@SVImpavidus]

It certainly is! Sail Safe mate. Ant & Cid