Stator

[Jlockmiller]

I have a 70hp Nissan outboard with a non working stator. (NS70A2). I cannot locate a replacement stator. Are there any out there that are compatible to Nissan parts(tohatsu)?

 

[km1125]

If you can't find one then the old one can always be rewound. Not that hard to do manually, just takes a little time. You can unwind the old one, measure the length, then just get some good "magnet wire" of the same length and rewind the opposite way it came off. There are places that do it too, if you're uncomfortable doing so.

 

[pvanv]

That motot doesn't have a stator. It has an exciter coil and a trigger coil. Diagnose which you might need.

345062220M

TRIGGER COIL-NO LONGER AVAIL.

346062210M

EXCITER COIL-NO LONGER AVAILABLE

Then contact CDI electronics to have yours rewound.

 

[Sagan sprague]

That motot doesn't have a stator. It has an exciter coil and a trigger coil. Diagnose which you might need.

345062220M

TRIGGER COIL-NO LONGER AVAIL.

346062210M

EXCITER COIL-NO LONGER AVAILABLE

Then contact CDI electronics to have yours rewound.

do you happen to know the type of magnet wire they use to re wrap the exciter?

 

[Sea Rider]

Wrapping any electrical component to factory condition it's a precise tech work, not suitable for most of us if not all, as a starter will need some sort of machine to hold the component in place while wrapping new magnet wire over the component. Take Paul's suggestion, contact CDI Electronics...

Happy Boating​

 

[racerone]

I would some wee coils many years ago.---Eddy current probes they were.------Magnet wire was 003" diameter.-----So the bigger wire for a stator coil would not be hard to do.------Count the number of turns as you take it off.

 

[Sagan sprague]

Got under the flywheel it’s a 22 AWG magnet wire .025gauge. Ordered it off of Amazon 11$ for more than enough for the coil. Working on a jig to hold the coil today after work!

 

[Sagan sprague]

Also found my upper crank seal was not seated right still having a rough idle that happened overnight after a good maiden voyage. Found the exciter was not producing enough possibly causing a weak spark?

 

[Sea Rider]

Did you measured the exciter's and trigger coil's output with an instrument or you assumed both weren't producing enough voltage output ? If with instrument what were the output readings in DVA Volts for each one while cranking ?

Happy Boating​

 

[Sagan sprague]

Did you measured the exciter's and trigger coil's output with an instrument or you assumed both weren't producing enough voltage output ? If with instrument what were the output readings in DVA Volts for each one while cranking ?

Happy Boating​

I can’t remember the pulse coil volts but it was within the range specified in the service manual. The exciter maxed out at 40 volts averaged in the mid 30s when I would pull it. So I’m between that or the CD ignition unit. I really appreciate the help!

 

[Sea Rider]

If the trigger happens to be a pulse coil with other name should see a MIn 3.O DVA volts, the exciter coil must work with at least 130 DVA volst output. If you tested both while cranking with a standard analog or digital meter will need to have DVA measuring capabilities or will read erroneous output volts. Each exciter, pulser, CDI and ignition coils have their own Ohm and DVA outputs to check...

Happy Boating​

 

[Sagan sprague]

I’ve assured that the fluke can measure DVA volts. The pulse coil read 1.8 volts 21 ohm, and the exciter coil topped out at 40 volts with 292 ohm of resistance. Have also checked the secondary coils in the CD ignition unit one is at 2.8 kohm others reading 2.67. Have had to deal with issues like this in the past on a old Johnson but it lost its spark completely. This tohatsu is a lot harder for me to diagnose what’s causing the issue. Once again thank you for your help it is greatly appreciated!

 

[Sea Rider]

If both exciter and pulser coils are far away from their respective DVA electrical outputs factory stated for that precise NS70A2 model are defifinitely useless. I've seen shot electrical components but were a visual disgrace, that's severely rusted, pitted compared to the 3 electrical components seen in post 8 which are in mint cond looking to me.

After you rewound new magnet wire on both exciter and pulser coils to output correct specified voltage, troubleshoot the CDI voltage output to check if within specs or not, not before. Out of curiosity, of all the 88 Fluke meters market available which one is your current Fluke model in use ?

Happy Boating​

 

[km1125]

That crank seal could have definitely caused issues with starting and idling, as you'd be sucking in air there. Hard starting on a two-stroke is one indication of hardened or faulty crank seals.

Your ignition may still need attention, but it might have run with a weak spark if the crank seal was working properly.