Just got an AD-10-M Johnson 1956 7.5hp outboard

[oldybutagoody]

Anyone know what the M designation means?

 

[64osby]

Pretty sure it is a mid year model change. Usually small changes.

 

[oldybutagoody]

That makes sense. Thanks. Hey, whatdayaknow, That was your 4,444th post.

 

[F_R]

There were several mid-year changes in 1956. One that comes to mind is the gears on the twist grip throttle shafts. The M will tell you what version you have if you need to order replacement parts affected by the change.