Thread: Merc 40 info
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Eisboch[_4_] Eisboch[_4_] is offline
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First recorded activity by BoatBanter: Dec 2008
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Default Merc 40 info


"SteveB" wrote in message
...
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


Oil injection systems were controversial and problematic on some of the
Evinrude engines but you don't hear of many issues on the Merc engines. I
had an old, late 80's vintage 70hp Evinrude with the oil injection system
(in fact I recently re-acquired it and the boat it is on). I had it
rebuilt 10 years ago and it still works and runs fine.

Can't help with much info on your engine however. If you are not familiar
with them, one of the best places around here for parts, manuals and
accessories is Monahan's Marine in Weymouth.

http://www.monahansmarine.com/

for a map and directions,

http://www.monahansmarine.com/contact.html

Eisboch