Ajax, that looks convincing for an ML4. Does your weight of 50.1 kg include the drip tray shown in the photos? I have recently lifted an ML4 (less tailstock and drip tray) from ground level to car-boot level without distress, so I would estimate it about 40 – 45kg plus those bits. Unfortunately my ML4 leaflets don't give weights, so I can't quote from source.
And before anybody asks, yes I have the manual handling and lifting certificate (and a 35-year-old disc injury) so I don't take chances!
George