[C320-list] Johnson Water pump replacement for Yanmar

[RONALD HODEL]

I bought a new Johnson F4B-903 pump and had the one that was failing rebuilt. I put the rebuilt one back on the boat and I carry the new one in my engine spares box. It was the more expensive option but we were off cruising and going places where there would have been no place to have a failing pump fixed. (Expensive option / cheap insurance).

Ron Hodel
#1070 Lokomaikai

Sent from my iPad

> On Apr 25, 2022, at 12:51 AM, Dennis Cookson <dennis at cooksons.net> wrote:
> 
> Dean, I had a similar situation and chose to refurbish the pump. Replacement bearings and o-rings are of standard size and readily available. Any marine engineer could fit these for you.
> 
> Dennis Cookson 
> Catalina 577
> 
>> On 25 Apr 2022, at 04:10, Dean Agee <dagee at iserv.net> wrote:
>> 
>> My Johnson F4B-903 pump froze up.  I disassembled it and found the smaller bearing had failed.
>> 
>> It appears there are number of replacement options.  Does anyone have a recommendation for a pump?  For a vendor?
>> 
>> Thanks!
>> 
>> 
>> Dean Agee
>> AhSeaHola, #912
>> 
>> Bay St Louis, MS
>