On Mar 8, 8:55*am, "paul@byc" wrote:
On 3/7/2011 10:51 PM, Frogwatch wrote:

Normally, I don't hesitate to try to fix anything but as I get older,
I realize it is silly to try to do everything. *So, now that it is
time to replace the water pump impeller on my 90 hp Yamaha OB, should
I do so or is it simply a PITA that I should get a shop to do? *It
involves dropping the lower unit taking apart the pump, aligning stuff
and finally replacing the lower unit. *I am not sure how heavy the
lower unit is.
This is mostly a foolosofical question; should I pay to have it done
even though I know I can do it? *How wimpy would you feel if you paid
someone else to do it? *I know, its really a stupid question as I've
fixed everything from electron microscopes to diesel engines (yup,
fixed so they caint never work agin) so I got nuthin to prove but
paying someone else to work on my boats rarely works well.
I s'pose I am looking for a good reason to wimp out of doing this.

This can be a much bigger, more complicated and much more aggravating
job than you might imagine. I did it once on a little Evinrude I used to
own, and that wasn't too bad, but the larger engines are far more
complex "down there."

I'm not sure how the procedure is o that brand, but from doing several
on mercruisers it's not a hard job on that brand. Especially after the
2nd one, it gets really easy. . But firsts time out it DOES help to
have a shop manual.

But like Greg was talking about the engine being used in salt water
etc. yeah, I'd let a pro do it.