Front Scarifier (Optional) When remove the bolt (5) between holes (a) 1. Scarifier Oil Cylinder and (b) on the support (8), the cutting angle 2. Arm of teeth, lifting height and cutting depth of 3. Scarifier Oil Cylinder Arm scarifier can be changed. 4. Rod 5. Bolt 6. Tooth 7. Wedge Block 8. Support 20-128