Hiya,

Im a boating noob, boat a speedboat less than a week ago went out in it
yesterday and when I got home I was flushing it as advised by the
seller what he told was though to make sure the prop was submerged, I
made sure this was the case he didnt tell me that in fact the water
intake
holes need to be covered, it now starts and runs for about 30 secs
before spluttering to a halt he seems to think the impeller will be
burnt out, could someone please advise how and where it is please and
how to remove it, Ive got some pdf files about these motors but it
dosent really help with the removeal of the impeller, I really no
nothing about engines and the like but are prepared to take anything to
bits (I didnt know what a car was or did a week ago or what points
where LOL), so Im going through a steap learing curve here.
The engine I believe is from the early 70s.

Cheers
Pete

wrote in message
oups.com...
Hiya,

Im a boating noob, boat a speedboat less than a week ago went out in it
yesterday and when I got home I was flushing it as advised by the
seller what he told was though to make sure the prop was submerged, I
made sure this was the case he didnt tell me that in fact the water
intake
holes need to be covered, it now starts and runs for about 30 secs
before spluttering to a halt he seems to think the impeller will be
burnt out, could someone please advise how and where it is please and
how to remove it, Ive got some pdf files about these motors but it
dosent really help with the removeal of the impeller, I really no
nothing about engines and the like but are prepared to take anything to
bits (I didnt know what a car was or did a week ago or what points
where LOL), so Im going through a steap learing curve here.
The engine I believe is from the early 70s.

Cheers
Pete

I could tell you how to access the water pump impeller but I don't believe
that is the reason it runs for 30" and then stops. Sounds like a fuel
problem. I just had the same problem with a '76 15 hp and discovered that
the fuel pickup tube in the tank had fallen off. Priming the fuel line bulb
would apparrently suck up enough fumes to start engine but it would
immediately quit. Also, check to be sure you have the vent screw on the
tank open...that will cause the engine to starve for gas. Another
thing...we just restored my pontoon boat with 70hp Evinrude...had a similar
problem starting the engine and discovered we had put the gas line back on
backwards so when squeezing the priming bulb we were pushing the gas toward
the tank instead of the engine. If the impeller is shot, it would start and
run fine for more than 30", probably a few minutes, before the engine seized
up. And then you wouldn't be able to pull the engine over until it had
cooled back down.

I forgot to say that during this time it gets VERY hot and does not
shoot water out of it even though holes are now submersed.

Pete

replace the water impeller. They can only run for about 10
sec out of water. It is in the lower unit
Capt. boots
"Pete" wrote in message
ups.com...
I forgot to say that during this time it gets VERY hot and
does not
shoot water out of it even though holes are now submersed.

Pete




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Woooohoooooo I found the little tinker and yes its a bit knacked not
how do I tell which one I need etc and the age on my engine, I believe
people can tell from the serial number so if anyone can here is the
serial number 15036BR2384.

So if anyone can help me date my engine and tell me which impeller I
need

Cheers
Pete

"Pete" wrote in message
ups.com...
I forgot to say that during this time it gets VERY hot and does not
shoot water out of it even though holes are now submersed.

Pete
It actually has to submersed in water several inches above the intake holes.
The water pump sits above the point where you see that you can separate the
lower gearcase from the leg. So, if I remember correctly it has to be under
water at least 4" above that point. That being said, I put a new impeller
in my 15hp and still no water came out the pee hole when testing this way
and even with a hose connected to the lower unit with "ears". But when I
put the boat in the river, I got plenty of water shooting out the exhaust
hole in the back right below the power head. Actually it doesn't have a
"pee" hole, just the hole I mentioned above. I, too, thought the impeller
was bad when I didn't get the telltale water coming out during test ( I had
just bought the motor used) so I bought a new impeller ($40) and installed
it. The old impeller looked like new so I saved it for future use. I
would put it back in the water and try it before replacing the
impeller...that is if you can solve the not running problem. And if you
insist on replacing it..you take the 6 bolts out that hold the gearcase to
the leg, then with the motor in forward gear, pull it apart far enough to
reach in and loosen the set screw/bolt that holds the upper shift arm shaft
in its coupler. Then it should come right off. You'll see the water pump
housing bolted to the top of the lower part you removed. Be careful when
taking the water pump apart that you don't lose the little key that fits
inside the impeller against the shaft. That is if you might want to put it
back together when you see that all looks well. A new water pump kit comes
with a new key and all gaskets you need. You might be able to buy just the
impeller cheaper but my local dealer didn't give me that option.
Solve the running problem first, I don't think it's related to a water pump
problem. One other thing...there were some motors that had the shift shaft
coupler up below the powerhead rather than where I said, but I've never seen
one. And finally here's a link with lots of Johnson/Evinrude info and
repair tips. http://www.outboardrepairs.com/johnson/

Tom G.

Tom,

Thanks for the very comprehensive reply, you are correct its on the top
part of the bottom section although Im unsure how it was all together
as the impeller is pretty shot.

See above post as Im now after knowing the age of the engine and which
impeller

Many many thanks
Pete

Pete wrote:

Woooohoooooo I found the little tinker and yes its a bit knacked not
how do I tell which one I need etc and the age on my engine, I believe
people can tell from the serial number so if anyone can here is the
serial number 15036BR2384.

So if anyone can help me date my engine and tell me which impeller I
need

Cheers
Pete


The model number is a better lead for OMC engines, but your impeller
part number should be 375638(covers all 15-18-20 HP 1953 to 1973).

Rob

"Pete" wrote in message
oups.com...
Tom,

Thanks for the very comprehensive reply, you are correct its on the top
part of the bottom section although Im unsure how it was all together
as the impeller is pretty shot.

See above post as Im now after knowing the age of the engine and which
impeller

Many many thanks
Pete
Go here,
http://www.outboardrepairs.com/deter...ards/?evinrude
and click on one of the forum questions about year, then go here
http://epc.brp.com/default.aspx?brands=ej&lang=e for a parts list and
schematic. Then go to your nearest Johnson/Evinrude dealer to order part.
It only took a day to get the water pump repair kit for my Evinrude.
Actually, you could just take the model number to the dealer and he can tell
you the year, part number, and price but I would still print the parts list
and schematic from the second link above. It'll be helpful in figuring out
where things go, although the repair kit came with instructions on
installation.

Tom G.

Thanks again Tom you are a true gent, I will do some digging

Regards
Pete