SteveB wrote:
Friday, I am picking up a boat I bought. It is a Lund with a 40 Merc. It
has the Oil Injection. I was told by a parts man that they started
manufacturing those in 1995. The boat is older than that, but in pretty
decent shape, being garaged. The boat is at a distance from me right now.
I did take it to water and fired it up, and it ran good, and the pump had a
strong jet of water coming out.

Can anyone give me a heads up about this motor. I know that I can get the
mfr. date off the main frame, and it will tell me. I did not know this when
I tested the boat, but read it after. But, I went and got three plugs for
it, and now I see pictures of it with four cylinders. I had a 40 Merc short
shank years ago in the seventies, and IIRC, it had three cylinders.

Google is a maze of sites and info, and not knowing the specific month of
manufacture, nor having the boat close enough to run and check it has me at
a disadvantage.

Can anyone give me general info on this motor from what I've provided?
About the only things I can positively say is that it has the words "Oil
Injection" on the top of the lower unit, right under the cowling, it has a
remote key electric start and standard Merc controls.

Also, when I get it home, is it advisable to use a 55 gallon of water to
start and run it in just to check it out? Just how much user serviceability
is there? Carb jets? I am mechanical, and once pulled the top end off a
Evinrude 60 that had sucked a SS washer into a cylinder. Had it repaired,
and reassembled it.

Is there a place online to buy a manual without paying an arm and a leg?

Thanks in advance. Looking forward to having a boat again, and will
probably be back with other questions.

Steve



If it is a '95, it is a four-banger.

It's the same engine Yamaha used to "brand" and sell as its own.

West Marine has a service manual for it for under $40:

http://tinyurl.com/amwc5h

I don't know anything about the engine's "innards." I would change the
impeller just for the hell of it, and the plugs, and make sure the oil
injection was working properly.

Have fun.