Check if correct fuses are used, if necessary replace.
Test the audio warning signal
Check the frame leakage (insulation test)
Check function and wear of the accelerator
Check the electrical system of the drive motor
Check brake performance, if necessary replace the brake disc or adjust the air gap
Check the battery voltage
Clean and grease the terminals and check for corrosion and damage
Check the battery housing for damages
Check the main power cable for damages
Check the start-up protection during charging
Test the audio warning signal
Check the air gap of the electromagnetic brake
Test the reverse and regenerative braking
Test the safety (belly) button function
Check the steering function
Check the lifting and lowering function
Check the tiller arm switch function
Test the keypad for damages and function
Test the speed limitation switch (lifting height >~12in)
Check if all decals are legible and complete
Check if the protective screen and or guarding is not damaged
Inspect the castor, adjust the height or replace it, if worn out