I have a 2000 2-stroke 90 HP Johnson outboard
that has developed a faint high pitched harmonic type noise
when in gear
at low RPMs. It is probably there at higher RPMs but masked by the engine noise
. The engine
runs great, and I don't think most people would notice the noise, but I do.
The water pump
and shaft seal
in the lower unit was replaced last year. There is a 3 week wait for mechanic
, so I am trying to decide if I can continue to run it until a mechanic
Anyone have any ideas on what the source of the noise might be?