69 Evinrude How to replace coils,condensers,plugs, points and adjust carb

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Also there was this left in the trash can

[/IMG]
Not sure what to make of it It's always left A little bit of something in the water ,but I don't remember it being this much

 

[kfa4303]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

hi cc. don't worry about the water. that's normal. it's not nearly that bad on the water. it only happens because all of the exhaust gases and unburnt fuel are confined in the test tank.

as for the carb, the fact that the S/S needle isn't having the desired effect sounds like the packings in the carb are bad, I would rebuild the carb, or double check the current packings. you can get a carb kit right here at iboats for about $20. the reason the rpms should go up when twist in the S/S needle is because by twisting in the needle you are restricting the flow of fuel into the combustion chamber (i.e. "leaning" out the mix)which decreases the amount of fuel being combusted, and consequently increases the relative amount of air/oxygen. as a result, the combustion is hotter and therefore faster than it was before. another way the rpms can be raised or lowered is by advancing or retarding the timing(spark) respectively. The timing is adjusted when you twist the throttle on the tiller, or use the controls. you'll notice that twisting the throttle down, causes the magneto plate beneath the flywheel to turn clockwise causing the motor to fire less frequently thereby lowering the rpms. There is also a cam on the front of the magneto plate which moves a roller on the carb which in turn controls a butterfly valve to synchronize the amount of fuel and spark being delivered to the motor. Look up Lync and Sync here in the forums for the complete procedure. The trick to dialing in a nicel low, even idle is to find a balance between spark and fuel delivery. The idle set screw at the base of the vertical throttle tower will allow you to adjust how low the tiller throttle can be turned. Some folks set up their motors so that it konks out when you turn the throttle all the way down, while others use the idle set screw to prevent the throttle from going quite that low, resulting instead in a low idle rather than shutting off the motor. you'll just have to do some trial and error on the open water to get everything dialed in just right. hope that helps. holler if you get stuck.

 

[jbjennings]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

If turning the slow speed needle has no effect, then your idle passages are clogged or there is a vaccum leak.
There should be a little red nylon piece that the needle threads through and sits inside the opening where the slow speed needle goes. The nylon piece has a little tab on it that keeps it from turning while you adjust the needle. If it's missing or damaged, that could be part of the problem. I would take apart the carb, remove the low speed needle, and clean it by squirting some carb cleaner through all the passages. DON'T try to take out the high speed orifice. It requires a special screwdriver to remove it. Just blow it out really good with some carb cleaner. It should be o.k. since you said your motor was running o.k. at wide open throttle (WOT).
WHen you get the carb right, you'll probably really love your motor.
BTW, they all put out that crud in the barrel. ALso, in your pic, you don't have nearly enough water in the barrel for the water pump to prime properly. It needs to be about 3 or 4 inches below the hole in the back of the midsection where water spurts out (it's called an exhaust relief).
GOod luck,
JBJ

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Thanks guys...Boy do I feel like an ***. I just looked at the manual and realized. I'm just turning the choke screw:facepalm:. Last summer when I got the boat I didn't have the manual,and read about adjusting the slow speed Idle I was just looking for a screw,and that one to the choke is the only one on the carb. Looking at the manual now I see the low speed needle is not a screw per say as it has no head to turn,and is hiding behind the little boot that goes to the adjustment knob on the faceplate.:facepalm:. So tomorrow I will annoy the neighbors again and try to adjust it with the actual S/S needle valve.

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Here's the last idle ran today With cover on and choke screw almost tight LOL

You can hear it idle up at 12 sec then back down at 25sec all on it's on.

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

hi cc. don't worry about the water. that's normal. it's not nearly that bad on the water. it only happens because all of the exhaust gases and unburnt fuel are confined in the test tank.

as for the carb, the fact that the S/S needle isn't having the desired effect sounds like the packings in the carb are bad, I would rebuild the carb, or double check the current packings. you can get a carb kit right here at iboats for about $20. the reason the rpms should go up when twist in the S/S needle is because by twisting in the needle you are restricting the flow of fuel into the combustion chamber (i.e. "leaning" out the mix)which decreases the amount of fuel being combusted, and consequently increases the relative amount of air/oxygen. as a result, the combustion is hotter and therefore faster than it was before. another way the rpms can be raised or lowered is by advancing or retarding the timing(spark) respectively. The timing is adjusted when you twist the throttle on the tiller, or use the controls. you'll notice that twisting the throttle down, causes the magneto plate beneath the flywheel to turn clockwise causing the motor to fire less frequently thereby lowering the rpms. There is also a cam on the front of the magneto plate which moves a roller on the carb which in turn controls a butterfly valve to synchronize the amount of fuel and spark being delivered to the motor. Look up Lync and Sync here in the forums for the complete procedure. The trick to dialing in a nicel low, even idle is to find a balance between spark and fuel delivery. The idle set screw at the base of the vertical throttle tower will allow you to adjust how low the tiller throttle can be turned. Some folks set up their motors so that it konks out when you turn the throttle all the way down, while others use the idle set screw to prevent the throttle from going quite that low, resulting instead in a low idle rather than shutting off the motor. you'll just have to do some trial and error on the open water to get everything dialed in just right. hope that helps. holler if you get stuck.


View attachment 129936

Thanks Kfa That explains alot. I was wandering why the motor would die when the throttle was turned down. I ll will work with those adjustments. To make the motor not die thru the throttle and reconnect the kill switch. Very informative post Thanks.

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

JB I had some more water in there to start. That dang thing throws water in 10 ft radius. Here's a couple of Video's of it on WOT. One has me standing on the bow about a foot off the water. That was fun.

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Ok guys quick ?. Looking up Lync & sync. So I get the part about The throttle cam follower being lined up between the marks on the throttle cam. My question on this is If the carb is just supposed to start opening at this point my rollaer follower only goes up the throttle cam maybe a half inch past this point. It seems like I'll not have but just a little area from start to WOT Will I lose top end speed or low end idle. Some stuff I read said to then open the throttle all the way up ,and adjust it so that the throttle valve is completely open. My ? is. Is the throttle valve at the end of the throttle shaft arm, and how do I adjust it. The only thing I can see move is the roller cam assembly. Is the choke plate supposed to move at all. It is basically just wide open. I know on a car carb A simalar piece to the choke plate opens and closes when you press the gas ,but my choke plate just stays wide open. Could this be some of my problem.

 

[lindy46]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

This adjustment must be made with the motor not running and in forward gear so the throttle will advance all the way. Look in the carb throat, past the choke butterfly (should be wide open) to the throttle butterfly behind. When the cam follower (roller) hits the mark(s) on the cam, the throttle butterfly should just start to open. Continue advancing the throttle until it is as far as it will go. At this point the throttle butterfly should be all the way open. Adjustments are made to the cam. There are bolts at either end of the cam, and they are difficult to get at. Loosen both bolts and adjust the cam, in and out, until the butterfly opens as described above.

Did you say you cleaned and rebuilt the carb? From your video, sounds like the idle circuit needs cleaning. Probably some gunk in there. You have to remove the welch plug on top of the carb to clean that out - part of the carb rebuild process. Aside from the variation at idle, that motor sounds like it's running good. I'll bet a carb clean/rebuild will make it run perfect.

 

[jbjennings]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

The interlock will prevent full throttle motion of the cam until you shift into forward. Only in forward should you be able to go full throttle. The choke plate should be open at all speeds. The only time it should be closed is on colds starting when you pull the choke. Unless it's really cold, you should push the choke in right after it starts, opening it fully so that it gets plenty of air. Sometimes when it's cold outside, you have to leave it on choke for a few seconds before opening it. If you leave the choke closed too long, the mixture will be too rich and it should kill the motor.
JBJ

 

[AlTn]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

I'm with Lindy..motor is running pretty dang well!..typed more info on link and sync, but, for whatever reason, couldn't post it as "I was not logged in." <same procedure logging in I always use ...I dunno >..try the procedure Lindy outlined and see what happens...sometimes it's hard to explain something you"re really familiar with as I am sure Lindy is

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

This adjustment must be made with the motor not running and in forward gear so the throttle will advance all the way. Look in the carb throat, past the choke butterfly (should be wide open) to the throttle butterfly behind. When the cam follower (roller) hits the mark(s) on the cam, the throttle butterfly should just start to open. Continue advancing the throttle until it is as far as it will go. At this point the throttle butterfly should be all the way open. Adjustments are made to the cam. There are bolts at either end of the cam, and they are difficult to get at. Loosen both bolts and adjust the cam, in and out, until the butterfly opens as described above.

Did you say you cleaned and rebuilt the carb? From your video, sounds like the idle circuit needs cleaning. Probably some gunk in there. You have to remove the welch plug on top of the carb to clean that out - part of the carb rebuild process. Aside from the variation at idle, that motor sounds like it's running good. I'll bet a carb clean/rebuild will make it run perfect.

Ok this helps. I see one adjustment screw I'll look for the other one. I think ill have to remove the silencer to see into the carb. So if the throttle just opens on the marks and is fully open at wot. Would this be the whole lync and sync process.
The PO said the carb had fresh rebuild,but you know how that goes . Thnaks for helping

 

[AlTn]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

that's it,ccv

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

The interlock will prevent full throttle motion of the cam until you shift into forward. Only in forward should you be able to go full throttle. The choke plate should be open at all speeds. The only time it should be closed is on colds starting when you pull the choke. Unless it's really cold, you should push the choke in right after it starts, opening it fully so that it gets plenty of air. Sometimes when it's cold outside, you have to leave it on choke for a few seconds before opening it. If you leave the choke closed too long, the mixture will be too rich and it should kill the motor.
JBJ

Ok cool so the choke plate is good,and that explains why the throttle cam rollr never seemed to open fully cause I never tried with it in gear...thanks guy

 

[kfa4303]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

yup. sounds like you've got it. AlTn is right, if when you ever need to check the movement of the butterfly valve and/or roller cam, just turn the motor off and put it in FWD gear. This will allow the magneto plate to rotate through its full range of motion. It is limited in range while in Neutral to prevent over revving the motor, which in turn could lead to a runaway motor scenario in which the motor will race out of control. Sounds like you've got it all figured out now. Do one more round of tweaking once you're on the water, then tighten down the brass nut the S/S needle passes through and forget about it. I find that I only need to pull the choke out on a cold start, but once I've been running it around it starts on the first pull with no choke. cheers!

 

[inspeedway]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

i wouldnt stand on that bow for nothing if my wife was driving - she would see a fish or something and either turn sharply or off the throttle and the camera and me woulod be in the water -- nice job ccv --

 

[kfa4303]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

ditto, but if you do fall off go to the side, or you could get keel hauled and manateed (new word) up real quick. I'd be a shame to have your head chopped off by your girlfriend in your own boat but seriously, safety first

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Yeah pretty silly looking back. My only plan was to try and toss the phone back in the boat. Add to that. That,that was my X driving, and her first time driving a boat. Plus I didn't put on a life jacket:facepalm:. I thought about it later and knowing her she would have freaked out. Killed the motor not been able to start it back,and been floating away LOL. Thank god I got pretty good balance. I think I'll do it again with a better camera, and a better plan that includes life a jacket, and more boating instructions for the driver. I know if I fall to dive one way or the other, but I really think as long as the driver held WOT. You could jump straight up into a backflip. Landing into the water as the boat speeds away. That would make for a sweet show(or serious medical bills LOL) Don't know if I'll ever get enough gumption to try that one. If I do I'll post the video.

 

[ccvolsdhf]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Working on the lync & sync Just about got it. May have to wait till tomorrow to start her up. Dang winter, need 2 more hrs daylight everyday

 

[HighTrim]

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

Re: 69 Evinrude How to replace coils,condensers,plugs ,and points

I have my popcorn ready....now on to the back flip please