6 hp Evinrude setting points/timing question

[Tim Frank]

Just replaced all ignition components on a '75 E/rude 6 HP.
My OEM manual shows a few special tools for testing and one that looks a bit like a lawn mower blade for setting the points.
The principle appears to be that setting the precise opening spot will give you the correct gap/dwell and you do this by electrically determining when the points just open.

Personally I find this type of adjustment more accurate than feeler gauges, but that is just me.
On the flywheel it looks like there are point setting marks that mean that you don't need the "LAWNMOWER BLADE".

What the manual does not mention is specifically where the advance should be when using this method. do you justhave the throttle set at idle?....no advance?


Anyone know?

 

[Monte1961]

Re: 6 hp Evinrude setting points/timing question

If there was no problem Pryor to replacement of new parts, IE: Points and condensers, with points setting on high lobe of crankshaft, set them at .020" and repeat procedure on other set is all that's required.

 

[F_R]

Re: 6 hp Evinrude setting points/timing question

I happen to make those timing fixtures. Throttle position (spark advance) makes no difference when using them. Yes, merely setting them at .020" will get them close, but if you want them right on, use the timing fixtures. It is when they open that counts, not how far they open.

 

[Tim Frank]

Re: 6 hp Evinrude setting points/timing question

I happen to make those timing fixtures. Throttle position (spark advance) makes no difference when using them. Yes, merely setting them at .020" will get them close, but if you want them right on, use the timing fixtures. It is when they open that counts, not how far they open.

Understood....and i just had an "ahah" moment....:facepalm: Kind of like the rope ladder over the side of the boat riddle....low tide..high tide...

My flywheel has a "Set points A" and "Set Points B" mark 180 degrees apart.
If I put the flywheel on, line up the marks with the marks on the magneto, should that not work for me?

 

[Monte1961]

Re: 6 hp Evinrude setting points/timing question

If you look at your crankshaft with the flywheel off, you can see where it's tapered. At the widest part of that, Usually at the key way, Thats where the points are at there widest. At that position, Set your points. Have two different sizes handy. .020" and a.022" feeler gauge. Set where the .020" will pass threw, but the .022" will not. Post back and let us know how you make out!

 

[cajuncook1]

Re: 6 hp Evinrude setting points/timing question

Just replaced all ignition components on a '75 E/rude 6 HP.
My OEM manual shows a few special tools for testing and one that looks a bit like a lawn mower blade for setting the points.
The principle appears to be that setting the precise opening spot will give you the correct gap/dwell and you do this by electrically determining when the points just open.

Personally I find this type of adjustment more accurate than feeler gauges, but that is just me.
On the flywheel it looks like there are point setting marks that mean that you don't need the "LAWNMOWER BLADE".

What the manual does not mention is specifically where the advance should be when using this method. do you justhave the throttle set at idle?....no advance?


Anyone know?

Tim, I have gotten and used Frank's Timing Fixture and works great!!! Very reasonable deal!! Frank sends all the instructions....very quality craftsmanship!!

Good to see ya!!

Cajuncook1

 

[HighTrim]

Re: 6 hp Evinrude setting points/timing question

I just bought one of Franks tools as well. Wish I would have had it a long time ago. Amazing how much better it runs when they are set precisely and not merely "guessing", which is what you are really doing with a feeler gauge.

 

[rockfinder2]

Re: 6 hp Evinrude setting points/timing question

Those marks on the flywheel are used with an automotive timing light. After you have done the settings and put the flywheel back on and with the engine running, clip to #1 plug wire and see if the makes line up. Then clip to plug wire #2 and see if the other set of marks line up. With the 6hp you will need a battery for the timing light. Mark the marks with some thing white so they are easy to see.

 

[Tim Frank]

Re: 6 hp Evinrude setting points/timing question

I used the magneto marks and lined up with two sets of marks on the flywheel...in sequence.
i set the points with an ohmmeter at that reference point.
Worked really well.
Unfortunately I left my manual in the city (motor was at the cottage) and when I changed the HT wires I had to remove the magneto cam. I guessed at the how to reset/synch the cam and cam follower but got it wrong.
Moptor is running smoothly at speed, idle is a struggle.

I will reset the cam properly, and wrap up this thread at the end of the week.

 

[Monte1961]

Re: 6 hp Evinrude setting points/timing question

the only thing/s that need to be adjusted are the point/s under flywheel. Most everything else is done externally. 1st. if you know that all is well under flywheel and point/s, condensor/s, coil/s are know good and in working order? As far as cam and timing plate goes, sets like this. (Very easy) there are two index marks on timing plate. Find those. At off position, start turning speed control while watching index marks on timing plate move towards cam roller. now, the cam should not hit timing plate before or after index marks. thats it. note, when cam hits index marks, at that time only, any turning of speed control towards higher speed will cause carb/s to open farther in-till (wot) is reached. Good luck and post back.

 

[Fishin' Mike]

Re: 6 hp Evinrude setting points/timing question

I happen to make those timing fixtures. Throttle position (spark advance) makes no difference when using them. Yes, merely setting them at .020" will get them close, but if you want them right on, use the timing fixtures. It is when they open that counts, not how far they open.

I need a timing fixture for my 1960 Evinrude 5.5hp Fisherman Model 5520. Please help with Frank's contact information.

 

[Joe Reeves]

Re: 6 hp Evinrude setting points/timing question

I need a timing fixture for my 1960 Evinrude 5.5hp Fisherman Model 5520. Please help with Frank's contact information.

Click on F-R's name and send him a PM.

 

[nwcove]

Re: 6 hp Evinrude setting points/timing question

the only thing/s that need to be adjusted are the point/s under flywheel. Most everything else is done externally. 1st. if you know that all is well under flywheel and point/s, condensor/s, coil/s are know good and in working order? As far as cam and timing plate goes, sets like this. (Very easy) there are two index marks on timing plate. Find those. At off position, start turning speed control while watching index marks on timing plate move towards cam roller. now, the cam should not hit timing plate before or after index marks. thats it. note, when cam hits index marks, at that time only, any turning of speed control towards higher speed will cause carb/s to open farther in-till (wot) is reached. Good luck and post back.

just for reference, if the cam hits or does not hit between the index marks, what needs to be done?

 

[Joe Reeves]

Re: 6 hp Evinrude setting points/timing question

This post is a year old... best to start a new one.

 

[Tim Frank]

Re: 6 hp Evinrude setting points/timing question

This was the little 6 HP that I redid the gear case seals when I threw in a new impeller last year; with the entire new ignition system, it is running like a top.
Hard to believe it is almost a 40 year old motor....what is that in people years?

 

[Fishin' Mike]

Re: 6 hp Evinrude setting points/timing question

Just replaced all ignition components on a '75 E/rude 6 HP.
My OEM manual shows a few special tools for testing and one that looks a bit like a lawn mower blade for setting the points.
The principle appears to be that setting the precise opening spot will give you the correct gap/dwell and you do this by electrically determining when the points just open.

Personally I find this type of adjustment more accurate than feeler gauges, but that is just me.
On the flywheel it looks like there are point setting marks that mean that you don't need the "LAWNMOWER BLADE".

What the manual does not mention is specifically where the advance should be when using this method. do you justhave the throttle set at idle?....no advance?


Anyone know?

On every two stroke cycle engine I ever messed with the correct ignition timing advance at idle RPM was zero degrees top dead center on the number one piston. The most accurate way I know of to find top dead center is by using a piston stop. Other methods fail to best account for "rock position," around 10-15 degrees crankshaft rotation at top and bottom dead center, when the difference between piston travel and crankshaft rotation becomes miniscule. Also, again my limited experience, specified idle RPM on two-strokes tend to be somewhat higher than four-stroke engines, say about 1,000-1,250 RPM vice about 750-800 RPM.