Hitachi ZAXIS 135US-5B Operator's Manual page 361

3. Clean shank (6) surface.
4. Install rubber pin lock (4) into shank (6) hole as shown.
RIGHT
6 4
5. Position new tooth (1) over shank (6).
RIGHT
6
6. Drive locking pin (5) fully into the hole as shown.
MAINTENANCE
1
RIGHT
1 5
WRONG
WRONG
WRONG
7-87
M104-07-060
M104-07-061
M104-07-062