I would like to Inspect the anti corrosion zink anode on my Yanmar 3GM 27 HP.
Any ideas on where it is ? And how I get access to it ?
Any ideas on where it is ? And how I get access to it ?
Anti corosion Yanmar 3GM 27HP
- Thread starter carlager
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Dunno, it seems like too new a boat to have a 3 GM ?? (Yanmar quit making these around 1985)
If the engine is really a Yanmar 3 GM or a 3 GMD, then it is seawater cooled and has 3 anti corrode zincs. One on the rear of the cylinder head and two in the block "freeze plug" holes on the engine starboard side around the lift pump.. If the engine is a 3 GMF then it is fresh water cooled and has no zincs ..
If the engine is really a Yanmar 3 GM or a 3 GMD, then it is seawater cooled and has 3 anti corrode zincs. One on the rear of the cylinder head and two in the block "freeze plug" holes on the engine starboard side around the lift pump.. If the engine is a 3 GMF then it is fresh water cooled and has no zincs ..
I took a photo of the badge on the engine and attach it. The model is 3GM30 and it is freshwater cooled. Are you sure there Are no anti zink anodes ?
That is correct, No zincs in that engine. Since the engine does not "see" the seawater, and it is full of antifreeze with anti corrosion stuff, no zincs are necessary.The metals in the heat exchanger and its housing, that do "see" seawater are selected for very low corrosion rates.. Make sure the engine coolant is OK and enjoy!
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