Hyundai HDBT52-A Original Instructions Manual page 12

Loosen the retaining nut and then remove all elements.
NOTE
After installation, always check if the installation is correct. If blade is not well installed, it will vibrate
excessively and can cause injury. When operation, if there is abnormal vibration, immediately stop the tool and
check the installation.
Assembly of the nylon cutting head (for grass trimming)
- Insert a metal locking tool in the hole on the side of the drive sprocket and on the drive shaft.
- Remove the retaining nut, the cover bell and the plate.
- Install and screw the nylon cutting head.
- Remove the metal locking tool.
To disassemble the nylon cutting, head, insert a metal locking tool in the hole on the side of the drive sprocket and on
the drive. Unscrew the nylon cutting to remove it.
Installing the harness
- Put on the harness.
- If necessary, adjust the bands of the harness to have the blade parallel to the ground when standing in your
normal working position to provide you most effectiveness and comfort on operating the machine.
- Install the hook on the main unit to attach the harness.
Quick release mechanism
Pull the strip to release the machine from you in the case of emergency.