Hi I'm new to this site. My grandson was given a Min-B 1/16 scale 2wd buggy. It works great. But he has somehow changed the direction of the trigger on the transmitter. Now when the trigger is not touched the buggy is on full throttler. When the trigger is pull on fully the buggy is stationary. Can someone guide me though fixing this?

If this is a Losi Mini--B vehicle the following is a link to the manual...

Losi: Support: Customer, Product, Website.

To fix the problem you may be having, your grandson may have accidently reversed the throttle on the transmitter. There should be a switch on the top of the transmitter to switch the direction of the throttle (as well as a separate switch for the steering).

If this is not a Losi vehicle, most transmitters will have a similar function or switch to reverse throttle or steering on the transmitter.

I hope this information helps.

Change the direction of the throttle, you will be able to do this with the help of the switch present on the transmitter.