Tn-26 and TN-28 differences

[shoestringmariner]

The johnson TN-26 and TN-28’s look absolutely identical. Any major changes between the two that are noteworthy?

[frankr]

Magneto and recoil starter are two major items. I THINK there is a difference in powerhead mounting pattern also, not sure on that.

[bbstacker1]

I haven’t tinkered with either one in a while but I think, the crankshaft and driveshaft’s are different also.

[richg]

TN-26 has the same magneto as the earlier TD-20. By that I mean the older style coils that rarely went bad and the pusher type points like the TD-20.
TN-28 has the "Universal style" magneto common to the 1950’s onward classics.

[archangel]

Was the change when the TN-27 was introduced or was the change for the TN-28 only?

[bbstacker1]

I have a couple of TN-27’s they both have the universal (newer style) coils.

[richg]

quote Archangel:

Was the change when the TN-27 was introduced or was the change for the TN-28 only?

The TN-25 and TN-26 have the old TD style magneto. The TN-27 and TN-28 both have the "new" Universal magneto.

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