Scooter won't move forward or backward

The drive lever on a Kymco mobility scooter is the lever that engages the motor and allows the scooter to move forward or backward. It is usually located on the handlebars of the scooter and can be controlled by the user. If the drive lever is not engaged properly, the scooter may not function correctly and could result in the flashing 7 times error code. You should consult your user manual or a certified Kymco dealer for more information on how to engage the drive lever correctly.

Sounds like you reversed the leads from the motor

measure the voltage of the batteries thru the charging socket of the scooter, the outside 2 pins.

http://www.monsterscooterparts.com/sportdks200.html

Your thottle lever and speed pot need resetting

hi, they are a nice scooter so let's get it working ,
First check that the freewheel lever is disengaged, in drive mode.
Do you hear a click when pressing the lever to go forward or backwards?

What can happen is the brake located on the side of the motor can seize,,,
Please keep me updated
Regards

Things to check: Drive/Free wheeling switch, brake release lever (this activates an internal micro-switch that enable power to the drive system, battery box connectors (condition of contacts - corroded, missing, loose. etc.); main control cable (corrosion. lose or missing pins, etc). If all these are OK, could be controller or drive control potentiometers (speed, forward, backward) on the handle-bar (tiller).
Good luck!

http://www.bladezscooters.com/
http://www.monsterscooterparts.com/

Unlikely some other manufacturer's box will fit, if only because the circuit connecter is built into the pack.

Not exactly sure this is helpful, but make sure the bottom of the scooter is dry; all it takes is a little moisture and the scooter won't work.

More than likely its the speed pod or engager (paddle assy. This would need to be replaced.