TOPIC: '57 Evinrude Lark 30hp electrical & fuel pump

Is there any decent way to add a charging system to a '57 Lark 30hp? I was told that an electric fuel pump would do to run this on a regular non-pressurized tank but I'm wary of how long a battery would last running a pump and occasional starts.

Alternatively, would a vacuum-driven pump be easy to retrofit on it? Any suggestions on a specific pump to look for?

you could get a genrator kit for it but it would cost almost as much as the motor is worth. TO Change it over to a fuel pump is easy. You can get another inspection plate that has the hole in it ready for a fuel pump or drill the hole and tap the screw holes your self. Or you can get a small Mucni fuel pump and just drill the hole in the inspection plate and tap for a small hose fitting. Thought I had a digram for the change over to fuel pump but can't find it.
I know somebody else has the diagram so maybe they can post it.
Mike aka pathfinderz1

Or you can drill the upper plate on your motor and install a pump

I use a #15 drill bit to drill A all the way through (any size near that will work) then I tap the Bs for a #10 screw (some time they are already taped)



Go to NAPA and order this pump


www.go2marine.com/search.do?q=18-7352

Or ebay

cgi.ebay.com/ebaymotors/EVINRUDE-Johnson-OMC-Fuel-Pump-/360375956654?pt=Boat_Parts_Accessories_Gear&hash=item53e814b4ae

You will need to make a gasket for most pumps bought on ebay

BTW a 1957 will be 35 hp

Why not just keep the pressure tank system? It's a tried and true system - been in use for 60 years. Rebuild kits are available for the tanks. And, contrary to popular belief, they're no more hazardous than newer tanks. An electric fuel pump - now THAT's a hazard. If the motor stalls, the pump is still going. If you do want to go to a fuel pump, go with a traditional pulse pump...

Chinewalker wrote:

Why not just keep the pressure tank system? It's a tried and true system - been in use for 60 years. Rebuild kits are available for the tanks.

I have a tank for it but no hoses. What is the normal setup on these, primer pump bulb on the supply side hose like all the non-pressurized ones? This tank just has hose barbs, did they make quick disconnects for them (one connector for both hoses)?

There is a primer button on the tank so no primer bulb need and there is a conector that goes to the motor. The conector can be hard to get but they are out there. Post a add on here for one or go to the old outboad motor site and post a add on there. Heres the link www.aomci.org/cgi-bin/yabb2/YaBB.pl?board=Webvertize
Mike aka pathfinderz1

n0ukf wrote:

Chinewalker wrote:

Why not just keep the pressure tank system? It's a tried and true system - been in use for 60 years. Rebuild kits are available for the tanks.

I have a tank for it but no hoses. What is the normal setup on these, primer pump bulb on the supply side hose like all the non-pressurized ones? This tank just has hose barbs, did they make quick disconnects for them (one connector for both hoses)?

If you do not have the hose fitting for the motor end you will need to find one...Look at spending around $35 up for a use one and $120 for a new one

You will need one for each tank for the hose stays with the tank

Most people that use their motors much are changing to the new "single hose/pump" system. I have 4 (here) 1957 35 hp and one 1956 30 hp of all of them I have 3 set for the pump...One came from the factory with a pump) The other two are going on a boat as twins They can be changed back to duel line system in 30 min for the AOMCI shows

If you are going to use the boat much I would go with the pump. You will be able to change just the tanks and not need many hoses .... and the plastic tanks do not mar up the boat as much

TallTexan wrote:

Or you can drill the upper plate on your motor and install a pump

I use a #15 drill bit to drill A all the way through (any size near that will work) then I tap the Bs for a #10 screw (some time they are already taped)

Go to NAPA and order this pump


www.go2marine.com/search.do?q=18-7352

Or ebay

cgi.ebay.com/ebaymotors/EVINRUDE-Johnson-OMC-Fuel-Pump-/360375956654?pt=Boat_Parts_Accessories_Gear&hash=item53e814b4ae

You will need to make a gasket for most pumps bought on ebay

BTW a 1957 will be 35 hp

If the motor is a 30hp, it will not have the handy pre-cast-in boss on the intake cover...

If it is a 30 Hp then it is a 1956

the only year that Evinrude made 30 Hp (without fuel pumps already installed) is 1930 and 1956

However in 1956 through 1959 they used the same bypass cover

You drill the bypass cover...back part of the power head port side..two of them ...drill the one that is easiest to mount the pump to

My 1955 25 hp has the same covers....however I am not sure if those are the cover that cam with the motor

TallTexan wrote:

Or you can drill the upper plate on your motor and install a pump

I use a #15 drill bit to drill A all the way through (any size near that will work) then I tap the Bs for a #10 screw (some time they are already taped)

That pic is cropped a little too close. Is that the plates on the side of the cylinder intake passages from crankcase?

n0ukf wrote:

TallTexan wrote:

Or you can drill the upper plate on your motor and install a pump

I use a #15 drill bit to drill A all the way through (any size near that will work) then I tap the Bs for a #10 screw (some time they are already taped)

That pic is cropped a little too close. Is that the plates on the side of the cylinder intake passages from crankcase?

Are you sure that that motor is a 1957...the cover is the same as I have on the lower of my 1955 25 hp...and 30 hp were 1956 may be an early 56 ..can you post the Mpd#

Drill and tap one of the plate for a hose bar fitting. Buy this pump (item #1)first as to know what bar fitting you need. (get one that turns at a 90 degree if you can...it helps.)...Yes I know that it is a Honda, but it works and the price is real nice

www.boats.net/parts/search/Honda/Generator/0/EN2500%20AL%20GENERATOR%2C%2 ...



The pump has an in, out and a pulse

www.duckworksmagazine.com/05/columns/max/5/index.cfm

first link won't load

Try this

www.boats.net/parts/search/Honda/Generator/0/EN2500%20AL%20GENERATOR%2C%20JPN%2C%20VIN%23%20EZFS-1000001%20TO%20EZFS-1099999/FUEL%20TANK%20%281%29/parts.html

Better. And those are good up to at least 30hp?

I don't know why I said 1957, it's a '56 30hp. Model/serial 25526-16692

Yes they will pump the fuel needed +

Got to love the price compared to OMC's

Here is a link we had on the pump a few months ago

www.aomci.org/cgi-bin/yabb2/YaBB.pl?num=1280717210/3#3

and a parts list to your motor

www.marineengine.com/parts/vintage-evinrude-johnson/ITEM_2750/catalog.html?http://www.marineengine.com/parts/vintage-evinrude-johnson/ITEM_2750/ITEM_275000001.htm

Ebay listings for pump
shop.ebay.com/i.html?_from=R40&_trksid=p3872.m570.l1313&_nkw=Honda+16700-Z0J-003&_sacat=See-All-Categories