Avoid Abusive Operation; Never Move An Object Sideways With The Bucket - Hitachi ZAXIS 135US-6 class Operator's Manual

OPERATING THE MACHINE

Avoid Abusive Operation

Do not attempt to add additional digging force by using travel,
raising the rear of the machine to use the machine's weight.
MZX5-05-005

Never Move an Object Sideways with the Bucket

For example, do not swing the bucket to level material or do
not strike objects sideways with the bucket.
Doing so may damage the front attachment and the swing
system.
MZX5-05-006
5-21