Hi Jim

I looked for info on compression testing, and as we wont have a compression
guage I found this...
===========
Manual compression test:
Pull starter rope through all compression revolutions.
Listen and feel force required
1)Thump
2)Thump
3)Whoosh
4)Thump
That third one failed
===========
and
==============

what I usually do is pull the plugs on all cyclinders. Then squirt a light
mist of wd-40 in all the holes (if the motor has not been run), then crank
over till you get the highest reading. Repeat on all cyclinders, should all
read within 12psi. If the motor is still warm from running the wd-40 is not
needed. As long as it is over 105 or so, all I look for is being close to
the same. Also ask the owner to let you pull the bottom lower unit drain
plug to see what the oil looks like, if milky beware.
===============

Is it really as simple as that do you think?
Thanks
Helen

Jim wrote:
I would look for signs of corrosion, check the
compression, and look for water in the lower end.

Does it start easily? Does it pump water?

That's what I'd look for.
Jim

Vødkäjéllÿ wrote:

Hi group

We are buying a second hand 9.9 mariner 2 stroke (it's
about 3 years old) for our 11ft Rib. Have been reading
the messages in here and found lots of info on the above
model, but please could anyone advise us of what to look
for ie potential problems when opening it up? Please respond, this is a
genuine inquiry, and I will be
replying! Thanks in advance

A complete novice!



--
Vj