Doosan 9/270 Operation And Maintenance Manual page 13

10 SAFETY
When loading or transporting machines ensure that the towing
vehicle, its size, weight, towing hitch and electrical supply are all
suitable to provide safe and stable towing at speeds either, up to the
legal maximum for the country in which it is being towed or, as specified
for the machine model if lower than the legal maximum.
Before towing the machine, ensure that:-
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
• the tyres and towing hitch are in a serviceable condition.
• the canopy is secure.
• all ancillary equipment is stored in a safe and secure manner.
When parking always use the handbrake and, if necessary, suitable
wheel chocks.