Chris wrote:

What specifically should I look for in the engine
mountings? They don't seem deformed or broken.

Thanks,

Chris

They should hold the motor more or less in the right place. If not
torn or broken, they are likely up to spec. The right stiffness may
make a difference to percieved vibration.

Terry K

Chris wrote:

What is air lock?

Thanks,

Chris


Air lock can be different things, but occurs when air somehow stops
a pump or drain. Air lock in a suction line may be simply an air
leak in the line, or may be a partial vacuum in a sealed tank of
fuel caused by not letting air get into the tank to relieve the
vacuum. Air lock in a drain won't let water out of i.e. your
toilet, when the drain vent, on the roof of your house, gets
plugged with snow, ice, leaves or birds' nests. The overpressure in
the drain line can impede the evacuation of the water.

Vapour lock is when fuel in the fuel line boils and acts the same as
if you had an air leak in the pump suction line, preventing a pump
from reducing pressure in the intake line sufficiently for ambient
atmospheric pressure to propel liquid to the pump.

Terry K

Good evening, Chris,

Very unlikely that's a Johnson OUTBOARD part. There's a whole different
Johnson company that manufactures a line of marine engine cooling pumps.
Check out www.johnson-pump.com then "Google around" and find a dealer
who discounts the service parts. Not West Marine/Boat US, BTW.

Ed Greeley

Chris wrote:


(*) This brings me to another question:
Where do I get cheaper Yanmar parts?
I paid $36 for the impeller, that seems
an awful lot of money for a tiny piece
of rubber.
It has 'Johnson' imprinted on it. Are
outboard parts cheaper?

(*) This brings me to another question:
Where do I get cheaper Yanmar parts?
I paid $36 for the impeller, that seems
an awful lot of money for a tiny piece
of rubber.
It has 'Johnson' imprinted on it. Are
outboard parts cheaper?

The Johnson pumps are Swedish made pump. I have one on my Yanmar
3GM30 for the seawater pump. I don't know where you got your
impeller, but I got two for that price last week. I think I
ordered out of the Lewis Marine catalog at my local marina,
where I had overnight delivery.

Johnson part # 09-810B-1

Leanne
s/v Fundy
W1WXS

Thanks for all the input! A hand rasp worked well,
took off the required 1/2" in less than 15 minutes.

Chris