Your dealer isn't totally correct in how to choose a coil... the "dual contact" coils are for a red-light, and you have to be careful using serial numbers unless you know the saw history as things get swapped around... If your dealer has already placed the order, I guess he's responsible though.
If it is correct that you can use the -1311, you'll have the -1203 flywheel and you can also use the 0000 400 1300 - and you can get one from Fish (above) for $35...
If you have the dual-key flywheel you can use most coils... if not take the flywheel off and look at the number on the back. I always check the flywheel and work from there.
Note that the old Bosch coil is only for the -1201 flywheel, or the "B" postion on a dual key. If you get otehr coils, they require slot P on the dual key flywheel.
As far as things being swapped around, I don't think so. This is a hand me down saw that my father gave me about five years ago. He bought it new in 1985, so hopefully everything is original.
One of the reasons he gave it to me was because it takes a full grown good man to start it when it is cold. His birthday was yesterday and he turned 89.
Therefore, at 84 he was not starting it often . . . and me being 67, I have to be committed when I pull the starting rope. What I am saying, when you pull the starting rope, you better put some or a lot of @rse into it or it going to fight you and win. No wimps for the 064.
Now on to the coil that fish is offering. I ordered a coil from a fellow on ebay, I will not say his name because it is not worth the hassle to do so. But, he advertised his coil as;
This is a Brand New 029, MS290, MS310 and 039, MS390 Ignition Module Assembly. This will also fit the 024, MS 240, 026, MS 260, 028, 029, MS 290, MS 310, 034, MS 340, 036, MS 360, 038, MS 380, 044, MS 440, 048, 064 Electronic Ignition Coil - Module. Parts # 00004001300. The Picture can describe this item better than I can.
Right, wrong or whatever, this coil would not even fit the bolt pattern on my 064. Well, I sent it back and waiting for my refund.
At any rate, I think I will remove the flywheel today and get the number and verify back to you. I need your advice before I accept this coil as to if it will be compatible with my flywheel.
Again, I thank you so much for your patience and tolerance to help me solve this 064 compatibility problem.
Melvin