Stihl 064 Coil Specs ?

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3rd. Pic - Keyway stamped 251 or 351 ?
From : Complete All Mattering Ignition Thread Vol. 2
For use with limited or unlimited Coils
Keyway X or B is furtherist clockwise for Unlimited Coils
Is this any help in pointing me towards a coil ? Thanks
You have already shown that even with damaged laminations yours will still produce spark so the coil is still good. All you need is to replace the bent laminations from a coil with the same bolt pattern laminations. Some here may be able to point you to suitable donor coils. These should press out fairly easily. At this point you really have nothing to loose trying.
 
Can't tell from the photo, is there a separate ground wire (not talking about the kill switch tab) coming out of the coil that has to be placed under one of the mounting screws? In older modules, the coils were wound on a bobbin and the bobbin was pressed onto the laminated core and bonded there but as coils are autotransformers, the primary and secondary windings have a common ground that must be grounded to the cylinder so a separate ground lead was brought out of the coil to do this. The bobbin with the coil could usually be removed and replaced with no damage. More modern modules appear to have the coil wound directly on the core and the ground lead is spot welded to the core and the whole thing, including the semiconductor package is potted in a very good epoxy. If your coil has only the high tension lead and a tab for the kill switch wire, you won't be able to separate the coil from the core without damaging the coil but if you do manage to get it off, you might be able to find an older type of coil that can be fitted onto the core. Would be a very frustrating exercise.
 
Stihl 064 Flywheel 1122 400 1203
Bosch 1 216 610 146
Made in germany 084
12394
2 Keyways
Any help on matching an after market Coil would be appriciated , Thank you.

Can't tell from the photo, is there a separate ground wire (not talking about the kill switch tab) coming out of the coil that has to be placed under one of the mounting screws? In older modules, the coils were wound on a bobbin and the bobbin was pressed onto the laminated core and bonded there but as coils are autotransformers, the primary and secondary windings have a common ground that must be grounded to the cylinder so a separate ground lead was brought out of the coil to do this. The bobbin with the coil could usually be removed and replaced with no damage. More modern modules appear to have the coil wound directly on the core and the ground lead is spot welded to the core and the whole thing, including the semiconductor package is potted in a very good epoxy. If your coil has only the high tension lead and a tab for the kill switch wire, you won't be able to separate the coil from the core without damaging the coil but if you do manage to get it off, you might be able to find an older type of coil that can be fitted onto the core. Would be a very frustrating exercise.
I have a ground wire that is under one of the mounting bolts.
 
I want to thank everyone that helped me bring back a severly damaged Stihl 064 back from the dead !
fired her up today for just a bit.
Ive searched all over for a bar and chain guide that would show a 28 to 30 inch bar and chain size without any luck.
Could someone please recommend a site or chart ?
Amazing what a little JB Weld and fiberglass can do !
Thanks again for all the help , Rkymtn57
 
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