Hitachi Zaxis 17U-5A Operator's Manual page 65

Precautions for extending/retraction side frame
 Operate the machine with the side frames retracted only
when traveling on a flat narrow work site.
 Except for the above operating conditions, always operate
the machine with the side frames extended for travel,
excavation, and blade operations. Failure to do so may
cause the machine to turn over.
SAFETY SIGNS
SS4676482-0
S-53
MABA-00-046
ZX17U-5A