Where did you feel the change?
Did the machine stop providing its usual help, or were the wheels slipping against the ground? Perhaps moving forward was normal but turning had become difficult. Describe whichever you noticed rather than grouping all three under “it won’t drive.”
Include what happened when you used the controls, based on the last use you remember. You don’t need to identify a drive part or repeat the problem for a recording.
Getting it to a shop may need a separate answer
If the lost assistance makes loading it difficult, check whether someone can work on it where it sits. Describe the access and ask what they require before attempting to move it. Don’t move equipment that may be unsafe.
When arranging the work, say that its behavior has changed. A routine seasonal appointment may not include finding that fault unless it’s agreed beforehand.
The technical and safety advice in this draft still needs to be checked against the manufacturer’s instructions by a qualified reviewer. Follow your machine’s manual.
About the review process