to adj the carbs you get a tool that fits over the carb
intake and measures the flow of air going into the carb. It
is called a flow meeter. you then adj the carbs so they both
have the same reading.
"Bill Kiene" wrote in message
m...
Hi Lloyd,

If you don't have luck on your own I actually took mine to
highly
recommended boat mechanics for their particular brands(OMC
and Merc) and had
them completely tuned and fully serviced. After that they
ran well for years
and then I sold them.

I worked on motor cycles, outboards, lawn mowers,
rotatillers, chain saws
and cars all my life but I don't seem to do it much any
more.

I also know I will not have the knowledge these veteran
outboard mechanics
have.

--
Bill Kiene

Kiene's Fly Shop
Sacramento, CA, USA

Web site: www.kiene.com


"Lloyd Cimprich" wrote in message
...
I have a 1988 Mercury Classic 50 (45 hp) 4 cylinder
outboard and I have
just
bought the Mercury Shop Manual for this unit. The manual
is quite good but
as I am new to outboard mtc. I have a hew questions for
the experts:

1. In my sailing days I had a 6hp Johnson which had a
thermostat but I
cannot find where this is located on the Mercury. Does
anyone know if this
unit has one and where it is located.

2. I would like to check the compression but am concerned
about damaging
the
electronics. Is it required to disable the spark, if so
how. Manual does
not
say.

3. How does one adjust the linkage between the upper/lower
carb to be sure
they open in sync. Once again manual does not say.

4. How would I connect a tach and temp sensor. Is it
possible? The local
marine store has a box full of used tachs and I would like
to put one in
if
practical.

5. The engine runs rough but a quick pull off of the top
carb indicated
improper float setting causing overflow on to bottom carb.
I quickly did a
tweak and overflow has stopped but it idles rough so I
assume I need to
pull
off fuel system, clean, adjust and re-try. Any
suggestions, tips would be
appreciated.

Any other advice would be appreciated. I know some do not
seem to be Merc
fans but I admit I like the look and it seems just to need
some tinkering.
A
little like an MG, Triumph or other British sports car.

TIA