Hitachi ZX27U-2 Operator's Manual page 172

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 1
6. Drive locking pin (5) fully into the hole as shown.
1
MAINTENANCE
WRONG
WRONG
RIGHT
5
WRONG
WRONG
WRONG
7-52
M104-07-060
M104-07-061
M104-07-062