While the light is FLASHING GREEN, push the button and release it. you should now have a SOLID RED light displaying. This first push disables the reverse and I think this is where most people accidentally disable their reverse function.
Rapidly press the button again.
You should be met with TWO FLASHES RED. This engages a delay on your reverse coming on.
Rapidly press the button again.
You should be met with THREE FLASHES RED. This engages a different delay on your reverse, can't remember what the difference is and quite frankly it doesnt matter on a boat anyway.
Rapidly press the button again.
You should be met by FOUR FLASHES RED. This engages normal reverse function ( and should really have been the programmed as the first button push, but hey, what do I know )
You should now be met by a SOLID GREEN light, followed by a RED FLASHING light...touch nothing, leave it alone, this part of the programming accesses Braking Function, car stuff for car boys, not for us...
A SOLID GREEN/RED follows this.
Then ALTERNATE FLASHING GREEN/RED. This is the normal Forward/Reverse Setting part of the programme. Quickly press the Button.
A SOLID GREEN light follows, push the Transmitter stick forwards to set top speed forward.
A SOLID RED light follows, push the Transmitter stick backwards to set full speed astern.
That should be it. if it is still not working, try the above a couple more times. You should be pressing the button a total of five times to restore Reverse, once to access the settings and four times in quick succession to get the FOUR FLASHING RED lights. Or pressing the button a total of six times if you reset the final Forward/Reverse settings as well.
Older Mtroniks speed controls have a slightly different set up procedure, but the above should deal with controllers made in the last three or so years, however if your speed controller only goes backwards, red light on, its knackered
This is from an old post on the forum , can't take the credit !!!
Hope it help Aid