Probably early/mid 1990s. A burnt wire odor probably means a burned wire. Had that happen to a DD machine couple years ago. The motor capacitor went bad, motor couldn't start and overheated/burned two wires in the process (low speed and the jumper from the capacitor to the motor start switch).
Fairly simple fix in my case ... replace the capacitor and fix the wires. The capacitor/jumper wire is a straight-forward spade connector. Low speed a tad more challenging since it's a very small connector that mounts into the motor harness block. I found the same size spade connector at the local home improvement, cut back the burned part and attached the new connector. Was able to pull the existing connector out of the harness block and the new terminal fits through the slot in the block to plug to the motor.
Could be a broken motor coupler but the motor would run in that case (and the machine would drain if not agitate and spin).