On Sat, 06 Mar 2004 14:33:28 GMT, "Frank Gerry"
wrote:

I have a Yanmar 18 HP 2GM20F diesel in my sailboat and was hoping for
someone with that engine or similar could answer my question about the zinc
anode. I was wondering if this engine has one and where is it located.
The manual states indirectly that there is one( i.e. it states the zinc
anode should be replaced periodically). But the manual does not identify a
location or a part number. Nor can I find it anywhere on the engine unless
it's hidden under some piece. Has anyone else had this problem?

Frank

My Yanmar manual is pretty poor. It specifies a zinc for my 3gm30f
(it's the same manual as for your 2gm20f) but there is no such animal.
The zinc is for the raw water cooled (3gm30) model only. Very likely
it's the same situation for the 2gm20f. The manual also specfies
different gearbox lubes in dfferent places. I highly recommend
purchasing the servce manual, which is much better and very useful if
you are doing anything more complicated than an oil change.

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