Replace Hammar H20E Hydrostatic Release Unit and bolt after two years of service.
Use only manufacturer-approved replacement bolt.
For models:
KANNAD 406 F/P
KANNAD 406 FH/PH
KANNAD 406 FW/PW
KANNAD 406 PH/WH
KANNAD 406 GPS PRO
KANNAD 406 PRO
KANNAD Auto GPS
KANNAD Auto