The guts of the motor should be repairable though if required. Going off the tag it's 32cc motor if they do the model numbers the same as Rexroth.I agree with the others and a systematic approach to troubleshooting is warranted. If a drive motor is found to be defective, I wouldn't be surprised if you need to replace both having Bosch/Rexroth in the mix as much older items have been discontinued.
The guts of the motor should be repairable though if required. Going off the tag it's 32cc motor if they do the model numbers the same as Rexroth.