Fast Fred what have I got here?

[Jeff Akers]

Fred, this came to me in a box of Yamaha parts...The cat that gave them to me said this was was a HIGH PERF tuner for a 70hp Yamy....Don't look like it would fit a 70 to me....do you know what model it's for....?:confused:

[Rusrog]

Looks like someone fab'bed a bell at the bottom of the tuner. It can't hurt...

[Fast Fred]

lookin like a copy of an aftermarket tuna i ran once, worked well:cool:
6H3 is 850cc code, 70hp, :cool:;)