KYMCO Downtown 300i ABS Service Manual page 255

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21 ANTI-LOCK BRAKE SYSTEM (ABS)
ABS ECU GUARANTEE:
＊
Don't remove four special bolts to take out the ABS ECU. If remove it
during the guarantee period. KYMCO can not take a responsibility
for it.
※ Don ' t need to drain the brake fluid if replace a new ECU
21-7
Oil tube bolt 4 * 3.5 kgf-m
Downtown 300i ABS
Hydraulic unit.