Hammer HB 450, Manual

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24
OPERATION
9. Note: Listen to the hammer’s sound when you are using it. If the soundbecomes weaker and the
impact less effcient, the tool is misaligned withthe material and/or there is not enough down force on the
tool. Realignthe tool and press the tool firmly against the material.
10. Do not strike in one spot for more than 15 seconds at a time. If the objectdoes not break, or if the tool
does not penetrate, stop the hammer andchange the position of the tool. Working too long in one spot will
createstone dust under the tool. Dust dampens the impact effect and producesheat.
12. To use the hammer most e˜ciently when breaking large objects, con-centrate on small steps from the
outer edge towards the middle.
13. When breaking hard or frozen ground, use the benching method. Startwith clearing a small area from
the edge. Then continue by breaking material towards the open area.