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  Topic Review (Newest First)
04-12-2014 11:03 AM
Re: Raw water pump ??

Found a new Oberdorfer pump for about $275 plus shipping. Installation not to bad but lower mounting bolt pretty well corroded but I finally won the battle with it. Pump number is N202M-15.

Thanks to all for your help.

Now on to next issue.
03-28-2014 06:37 PM
Re: Raw water pump ??

.. If you are not going to follow my advice in the above post, Maine Sail posted a how to on rebuilding his Westerbeake pump here; Rebuilding A Raw Water Pump Photo Gallery by Compass Marine at
03-28-2014 06:34 PM
Re: Raw water pump ??

That is a Sherwood raw water pump. Oberdorfer makes the other pump for that engine. You could rebuild it, (read about that here: but do yourself a favor and don't...

Call Depco Pump in Tampa (or maybe St Pete) and just buy a new one. It should cost ~$200 The guys at Depco really are experts. Make sure that you get a catalog from them too.

03-28-2014 05:27 PM
Re: Raw water pump ??

Engine is a universal M18 in a 31. Thanks for your help
03-28-2014 05:26 PM
Re: Raw water pump ??

Picture attached ( i hope )
03-28-2014 09:45 AM
Re: Raw water pump ??

More info on the engine itself, and a pic would go a long way.
03-28-2014 09:29 AM
Re: Raw water pump ??

The one on the top of the shaft
03-28-2014 09:04 AM
Re: Raw water pump ??

Which small hole?
03-28-2014 08:48 AM
Raw water pump ??

While doing spring maintenance, I replaced the raw water impeller. After I replaced and started the engine I noticed a small stream of water running from the small hole on the pump. I don't see any numbers anywhere. Anyone know where pump model number is?? Rebuild / replace??? Your input appreciated.

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