Hyundai HYBC3000 User Manual page 10

You must make sure that the engine has stopped, allowed to cool down
and disabled before commencing any maintenance work.
3.4. Refilling trimmer cord.
3.4.1. Use a replacement cord of 2.4 mm, the spool is capable of taking a cord
length of 6m on the standard head. Avoid using larger line as this will cut down
on the performance of the trimmer.
For safety reasons DO NOT use metal reinforced cord.
3.4.2. (1) - Pinch the slotted area on both
sides of the spool housing to unlock the
bottom cap.
3.4.3. (2) – Take the spool out and remove
the old cord. Fold a new piece of cord (3)
so the one half of the line is 120mm
shorter that the other half. Then hook the
bent over end into the slot on the spool.
3.4.4. (4) Wind up the line in the correct
direction as indicated on the spool.
3.4.5. (5) Hook each end of the cored in the
slots on the edge of the spool. Then pass
the cord ends through the eyelets (6) on
the housing.
3.4.6. (7) While holding the spool against the
housing pull the cord ends to release
them from the slots.
3.4.7. (8) Line up the slot on the bottom cap
with the hook on the housing, press the
cap against the housing until it clicks
securely.
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