Motor Anodes

[Waandderer]

Hello All,
I recently had my 1985 citation pulled out for repair. While it was out I changed the shaft anode and the bracket anode.
My question is do most motors have a "pencil" anode inserted in the motor? I have a Yamamar diesel in my boat and have inspected all the parts I can see without pulling cabinetry apart but see no anode "plug."
Do I need one, or is the shaft and bracket protection enough??

 

[Charlie Jones s/v Tehani]

Yes, most do have a pencil anode. Even many small outboards. Get a manual

 

[Padrone]

On my Universal MX25 it is on the heat exchanger.

 

[Waandderer]

Yeah, A manual is a good idea...

 

[kloudie1]

The 3GM series Yanmars do not have anodes on the fresh water cooled engines..If you have a Yanmar of the mid '80's, with a heat exchanger, it probably does not have anodes.
EDIT: If the engine does not have a heat exchanger, it will have anodes, 3; one on the aft end of the cylinder head, and 2, in the block, under the exhaust manifold. They are bigger than the pencil ones; about 1" in diameter with a large hex head.