OKADA TOP Series Owners And Operators Instruction Manual & Parts List page 25

4. Installing and removing the breaker
(1) Remove the two pins of the bucket and replace the
bucket.
(2) To operate the bucket without using the hydraulic
breaker, close the stop valve on the excavator's arm (turn
the valves off) and disconnect the hoses connecting the
stop valves to the breaker.
(3) Be sure to blind the disconnected hoses. The entry of
sand and mud into the hydraulic hoses and pipes can be a
cause for trouble.
5. Changing the chisel
(1) Remove the plug and shaft retainer, and then push
out the shaft.
Note: Refer to the tightening torque chart regarding
the tightening torque of the plug.
(2) Push out the chisel set pins from the bottom using a
screwdriver.
(3) Pull the chisel out.
Plug Retainer Shaft
25
Eye bolt
Chisel set pin