| This has happened on a couple of the DD bikes.
I discussed it with Mitch at TecMoto, and he says that it's a common thing with the return spring on the gear selector to either break the pins, or for the springs to break or become detached.
This means that you get no "return" on the gear selector. This would be the same as you pushing down on the gear lever, but keeping it held down. In some cases you can get round it by selecting down one gear, then selecting up one gear. This won't go back up the box, but will return the selector back to centre, so you can then put it down another gear.
You should be able to drain the oil and remove the side cover. Examine the gear selector forks for broken pins, broken spring or a detached spring.
You might be lucky and it has either popped off or come out of alignment. Eric The Red fixed his in Assen by resetting the selector fork and tightening everything back up. You may be lucky and be able to do the same.
I hope I've explained it well enough, but someone like Dr AK would be your best bet... |