Honda UMC425 Owner's Manual page 35

Removal:
Be sure to turn off the engine switch. Confirm that the engine and the
attachment is completely stopped before detaching the attachment. If
the attachment is still moving, personal injury or equipment damage
may occur.
1.Loosen the joint knob.
2.Pull up the set pin knob to the unlock position.
SET PIN KNOB
2
UNLOCK
1
LOOSEN
JOINT KNOB
3.Hold the main pipe on the power head side and detach the
attachment.
POWER HEAD SIDE
MAIN PIPE
ATTACHMENT
4.Put the set pin knob to the lock position.
SET PIN KNOB
LOCK
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