Tn-26 and TN-28 differences

This topic has 6 replies, 5 voices, and was last updated 10 years, 10 months ago by richg.

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April 13, 2015 at 2:37 am #1188
shoestringmariner
Participant
The johnson TN-26 and TN-28’s look absolutely identical. Any major changes between the two that are noteworthy?
April 13, 2015 at 11:10 am #13849
frankr
Participant
Magneto and recoil starter are two major items. I THINK there is a difference in powerhead mounting pattern also, not sure on that.
April 14, 2015 at 12:35 am #13900
bbstacker1
Participant
US Member
I haven’t tinkered with either one in a while but I think, the crankshaft and driveshaft’s are different also.
April 14, 2015 at 8:19 pm #13954
richg
Participant
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.
April 14, 2015 at 8:53 pm #13956
archangel
Participant
Was the change when the TN-27 was introduced or was the change for the TN-28 only?
April 15, 2015 at 12:15 am #13970
bbstacker1
Participant
US Member
I have a couple of TN-27’s they both have the universal (newer style) coils.
April 16, 2015 at 7:47 pm #14104
richg
Participant
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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