40 hp evinrude (year unknown) selectric shift model. HELP setting points and timing!

[WhiskeyNoise85]

If I have to pull this flywheel one more time !
Lol so glad to find a forum with such great guys. I read a bunch of the topics but nothing settled on my question.
Well I'm setting points on said motor. It all started with a no spark problem( SMH doesn't it always) so got new coils points condensers etc. So going to set the points and on my cam I don't have the word top to help me set the points. The cam obviously does get fatter on one side to open the points.. I've got it close the motor fights and starts for a second so I have the no spark fixed. I also don't have timing mark on my flywheel or a whole in my flywheel to adjust the points with the flywheel on. I've also searched YouTube. Thays how I got it close. Purdy please someone tell me what I'm missing.
Whiskey Noise

 

[WhiskeyNoise85]

Pics

 

[McGR]

Just get the cam to the highest point on the lobe and set the points to .020". That should be good enough for the motor to run well. There is a more exact method to set the points using a special timing tool. Once you get good spark you may want to look into it, though not absolutely necessary.

 

[racerone]

Looks to be a 67 or newer model ( 1970 was last production year of electric shift ) ----The model # should be on a plate above the transom brackets.----You have to vacuum out those red paint flecks.----- The special timing tool is nothing but a dummy flywheel.----So you can use the 2 timing marks on your flywheel ( yes there are 2 marks on it ) and the 2 vertical lines on the magneto plate to set timing.-----Some will argue , but using a meter and the timing marks gets you the strongest spark at the right time and 180 degrees apart.----Interested in learning that method ?

 

[WhiskeyNoise85]

Looks to be a 67 or newer model ( 1970 was last production year of electric shift ) ----The model # should be on a plate above the transom brackets.----You have to vacuum out those red paint flecks.----- The special timing tool is nothing but a dummy flywheel.----So you can use the 2 timing marks on your flywheel ( yes there are 2 marks on it ) and the 2 vertical lines on the magneto plate to set timing.-----Some will argue , but using a meter and the timing marks gets you the strongest spark at the right time and 180 degrees apart.----Interested in learning that method ?

I watched a video.of a fellow who did it that way. But I can't find the timing marks on the flywheel. Is there a example you can post. I feel pretty stupid if it's right in my face.

 

[WhiskeyNoise85]

Looks to be a 67 or newer model ( 1970 was last production year of electric shift ) ----The model # should be on a plate above the transom brackets.----You have to vacuum out those red paint flecks.----- The special timing tool is nothing but a dummy flywheel.----So you can use the 2 timing marks on your flywheel ( yes there are 2 marks on it ) and the 2 vertical lines on the magneto plate to set timing.-----Some will argue , but using a meter and the timing marks gets you the strongest spark at the right time and 180 degrees apart.----Interested in learning that method ?

I will give this a shot in about 45 min when I get home and post hownit works. Thank you!

 

[WhiskeyNoise85]

Just get the cam to the highest point on the lobe and set the points to .020". That should be good enough for the motor to run well. There is a more exact method to set the points using a special timing tool. Once you get good spark you may want to look into it, though not absolutely necessary.

I will try it out and post what happens. Appreciate your answer

 

[Crosbyman]

and clean up those points... lots of red flakes lying around ???

the word TOP is to install the lobe right side up it is not for setting point. your lobe may be upside down ??

see Leroy'S site
NOTE 2: Should the cam have the word TOP embossed on the top of it, that is a cam that could be installed upside down and this is simply telling the mechanic which side is up. It is not a position where one would set the top cylinder points.

lobe high point is fine you can also poke a screw driver in the top cyl.
rotate the prop til you feel the cyl is exactly TDC by sensing the screwdriver going in and out as you fine tune the exact location for TDC .

the rub arm of the corresponding points should be at he highest point of the lobe. set points for .020 has instructed


swipe the point contacts with carb cleaner when all set and done.

do the bottom cyl next.

utube is your friend....

 

[F_R]

That 1962 or newer motor does not have a separate cam. Cam profile is ground on the crankshaft. Simply set the points gap at 0.020" at their widest opening. That's not perfect, but is good enough. Or use the timing fixture.

 

[racerone]

Timing marks.------They are not like you would be used to on say a 350 chevy.------Put throttle to idle.----Remove sparkplugs.----Use screwdriver to bring / check for top piston at TDC.------Now look near the 2 vertical lines on magplate.----Find a SINGLE mark on flywheel near those 2 vertical lines.-----Repeat with bottom cylinder.

 

[WhiskeyNoise85]

Timing marks.------They are not like you would be used to on say a 350 chevy.------Put throttle to idle.----Remove sparkplugs.----Use screwdriver to bring / check for top piston at TDC.------Now look near the 2 vertical lines on magplate.----Find a SINGLE mark on flywheel near those 2 vertical lines.-----Repeat with bottom cylinder.

Ok make sure im not missing something. Bring to TDC. On top cylinder. Locate the 2 lines on magplate...found em. Now find line on fly wheel....now what. Bring the single line in-between the double lines and set point to .020?

 

[WhiskeyNoise85]

That 1962 or newer motor does not have a separate cam. Cam profile is ground on the crankshaft. Simply set the points gap at 0.020" at their widest opening. That's not perfect, but is good enough. Or use the timing fixture.

I tried this. I set top cylinder to TDC with a screwdriver and it was at the widest point on the cam. Turned the crankshaft 180° degrees and set point now acting like it isn't getting fire ....fml

 

[WhiskeyNoise85]

I tried this. I set top cylinder to TDC with a screwdriver and it was at the widest point on the cam. Turned the crankshaft 180° degrees and set point now acting like it isn't getting fire ....fml

Correction**** after set to TDC for top cylinder. I set the point then l, turned crank 180° and did same to other point

 

[McGR]

I would recommend not worrying about the timing marks for now. Just set the points at .020 at the highest point on the cam. At this point the points will be at their maximum gap. See if you have good spark after setting the maximum point gap to .020.

Though the timing mark method is a better approach, usually just setting the gap will produce acceptable performance. If you wish to go back later and fine tune the points you can, but for someone new to these, simply setting the gap is the easiest approach.

 

[racerone]

When the marks are in the right position it is the point where the points open.----Actual gap when fully open does not matter !-----Working on a 5.5 HP 1959 Evinrude today.----Same magneto and all very simple to me !!

 

[tphoyt]

Is this motor new to you?
Was it running ok before the no spark issue?
It sounds like you on the right track with the points so I’m wondering if you have other problems.

 

[racerone]

Once motor is running the spark can be checked with timing light.----It should always fire between those 2 marks on the magneto plate.----You are timing the opening of the points !!----Timing of spark relative to piston position looks after itself.

 

[lindy46]

I recently put new points in my 35hp Lark and set them using the timing marks. Turned out the points gap needed to be .023" to get the mark on the flywheel to fall between the two marks on the mag plate. The marks are the best way to set them.

 

[WhiskeyNoise85]

Is this motor new to you?
Was it running ok before the no spark issue?
It sounds like you on the right track with the points so I’m wondering if you have other problems.

Yes motor is new to me. Got the boat for free. It did not start when i got it.the owner said it's been setting for about 5 years. I expect to have the clean/rebuild carb. Maybe seals and definitely a impeller and could be on the water fingers crossed.

 

[WhiskeyNoise85]

I would recommend not worrying about the timing marks for now. Just set the points at .020 at the highest point on the cam. At this point the points will be at their maximum gap. See if you have good spark after setting the maximum point gap to .020.

Though the timing mark method is a better approach, usually just setting the gap will produce acceptable performance. If you wish to go back later and fine tune the points you can, but for someone new to these, simply setting the gap is the easiest approach.

Will do that and post results