1973 50hp Evinrude electric shift won't start...Help!

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

R.Johnson makes some valid points too and has a lot of expeience with outboard motors.

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Well, I was fixing to try and take the cylinder head off, and I noticed a crack on one of the ignition selinoids. So, I think now what I'm gonna do is replace the selinoids and old battery cables and see what that does.

 

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

You can reuse the bolts but you will need new gaskets, one for the head cover and one for the head,<br /><br />Torque specs are: <br />**Cylinder head screws.... 168-192 in. lbs (14-16 ft. lbs)<br /><br />**Retorque to 16-18 ft. lbs or 192-216 in. lbs. after motor test.<br /><br /> EDIT: While you're having a look see at those cylinder walls/pistons you should replace the t'stat and gasket along with the pressure releif valve and grommet. <br /><br />Good Luck

 

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

P.S. I forgot to mention Autozone has a lend a tool program, pay a deposit for the tool and you get your money back upon return

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

That's cool thanks for the info! I just edited my other post.

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

I've found the sierra selinoids and I'm fixing to order them.

 

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Since Iboats is out of stock try iShopmarine.com or maxrules.com, they both carry the OEM ign. coils, by the way they are ignition coils not solenoids

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Originally posted by MCM:<br /> Since Iboats is out of stock try iShopmarine.com or maxrules.com, they both carry the OEM ign. coils, by the way they are ignition coils not solenoids

iboats had the Sierra 18-5194 coils and I ordered a service/repair manual. I don't know why I keep calling them selinoids! I kinda confused the guy on the phone! <br />I'm gonna go get some replacement battery cables in the next day or two.<br />Do you think that doing the new coils will pretty much solve my problem? I still plan on doing a compression test later.

 

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

I think its going to be a matter of fixing one thing at a time and see where it goes, certainly bad cables and cracked coils are no help to the situation. Also you should replace the lower unit oil, water pump/impeller and probably the thermostat as well once you get the ign. problem fixed. <br /><br /> EDIT: I guess Iboats hadn't updated the web page info, must be a hot item

 

[R.Johnson]

Re: 1973 50hp Evinrude electric shift won't start...Help!

As I posted before, I would not spend any money on that engine until I determined the condition. There is more than one condition that will keep that engine from starting properly. The simple, and cheap solution is to take a look at those cylinder's, and piston's. Don't try to groom a dead horse here. That engine is 33 year's old, It was not the last word in durability to begin with. It has been a long time since I have seen one of those engine's that did not need some major help.

 

[papasage]

Re: 1973 50hp Evinrude electric shift won't start...Help!

i have a 50 hp 1973 it is a eletric shift . this is it http://img.photobucket.com/albums/v705/papasage/boatmotors001.jpg. the 72 & 73 was bad to have trhe piston to disintergrate . they dont make the piston anymore the 74 and newer will work but you will need to change the rist pin to make it fit . the probablem was the top ring was to close to the top of piston . with the no led gass it would detiorat . if you do git it running use a led additive . the motor above is a good motor i have priced it at $800.00 for boat motor and traylor . . it is a 1973 and it is eletric shift foot .i built one of those heads and put it on a 1974 satndard shift foot . i ranit for a long time . it is probabley still running . no average fisherman runns a outbord enough to wear it out if it is kept up and a good water pump clean the carbs regular and mix the oil gass ratio right<br /><br /> this is what i ran my 50 on .<br /> http://img.photobucket.com/albums/v705/papasage/riverboat2.jpg <br /><br /> dont know the brand but i think it is a bomber bass boat . the 50 pictured at top is another i bought .

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Well guys, I replaced the battery cables, spark plugs (gapped @ .030"), the ignition coils and replaced the old gas/oil mixture. I put the motor flusher on it and cranked it after a few times of trying to crank it. Let it idle for a about a minute. About an hour later I took it to the river (about 6-7 min from my house) boat launch. It cranked right up the first time let it idle for a couple of minutes, then it died. I then realized the fuel line had fell off the tank. Reconnected it and it cranked back up. reved it about half-way a few times and disconnected it from the trailer. When I got out in the river, I ran it at half-throttle about a minute and wanted to see if it would go full-throttle. It used to bog down big time after about 3/4 throttle. Today, it went all the way full throttle, ran perfect. I played on the river for about 5-6 minutes and put it back on the trailer and shut it off. Well, I forgot to disconnect the fuel line and run the excess fuel out. I went to go crank it and it wouldn't crank the rest of the time I was out there. It ticks me off because it ran super smooth, when it was running, even at idle. Any ideas on what it could be?

 

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Well like I said one thing at a time, is it not cranking at all or is it cranking and just not starting? are you trying to start it with the control in neutral? check for loose connections, if you're using wing nuts you should get rid of them and use stainless or brass nuts and make sure they're TIGHT.

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Got a new problem, please look at my boat pics in my homepage. Go all the way to the bottom 2 pictures. Is that lower unit oil? What is the hole that it is leaking from? My new coils are on there as well.

 

[99silverado]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Originally posted by MCM:<br /> Well like I said one thing at a time, is it not cranking at all or is it cranking and just not starting? are you trying to start it with the control in neutral? check for loose connections, if you're using wing nuts you should get rid of them and use stainless or brass nuts and make sure they're TIGHT.

It was working fine and when I went to start it back up to burn the rest of the fuel, it wouldn't start. Yeah, I always start it while in neutral. Thanks for the wing nuts tip, I'll try the nuts early tomorrow.

 

[MCM]

Re: 1973 50hp Evinrude electric shift won't start...Help!

Well I'm not familiar with that '73 lower unit and I don't have that hole on my '75. Have you removed the refill plug and checked the fluid level? gear lube has a pretty distinct smell to it. I posted this thread earier because it applies specifically to your lower unit, try the instructions from Joe Reeves since you've had problems with the remote/lower unit in the past.<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=28;t=036594#000003 <br /><br />It would seem that if you're not getting power the lower unit defaults to forward gear which may cause a no start situation due to the neutral safety switch. Just guessing there of coarse.