The screw that holds the cam (shoe) in place can also leak.
Lee Haefele
"Shawnews" wrote in message
news:qIjog.100130$iF6.39660@pd7tw2no...
Thanks everyone for your help. You confirmed my assumptions, and gave
good advice.

Thanks


"Shawnews" wrote in message
news:_Obng.88432$IK3.60860@pd7tw1no...
Good morning

I hope someone can help with an annoying problem.
I have a Yanmar 1GM10 inboard on my small sailing boat. It runs really
well. Recently I had it serviced, oil changed etc. including replacing
the impeller.

It has had a salt water leak for many years before I owned the boat. I
have only owned the vessel for 2 years.

The salt water is coming through the impeller housing, and dripping from
the designed hole between the impeller and the engine. I sense this is
where the engine shaft goes through to drive the impeller. It is not
coming from a gasket - that would be too easy! I did not see what the
seal is like where the shaft enters the area of the impeller. Is there a
replaceable seal there? Will it need a new impeller housing? I hope
not. No gaskets are leaking at all. He put on a new gasket when he
replaced the impeller.

I would appreciate any information you may have in this regard.

Many thanks