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Maintenance
5.
Warning! Pull plug from power before any operations.
Demolition hammer mechanical part is easy to get worn and lose impact energy if without
enough lubrication, recommend filling grease and oil after 6 months usage. The steps as
follows:
Fig 1
Fig 4
1. Loosen the 4 screws between aluminum head and gear box by 12mm HEX head wrench.(See
Fig1)
2. Disassemble the aluminum head, cylinder and piston.(See Fig2)
3. Clean the inside of aluminum head, must be free of metal chip and granular dust (See Fig3)
4. Clean the piston and cylinder.(See Fig4)
a) Clean the cylinder both inside and outside, especially clean the inside of cylinder, must be
free of metal chip and granular dust. If the conditional, recommend washing by gasoline.
b) Clean the surface of piston. 。If the conditional, recommend disassembling the O-ring and
washing the piston by gasoline.
c) At the same time, check the wearing condition of O-ring. If the Outside Diameter (O.D.) of
Fig 7
Fig 2
Fig 5
11
Fig 3
Fig 6
Fig 8
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