1. After placing the tip of the tool in the base hole, swith ON. In some cases, it is necessary to punch the up of the bit against the crushing position forcibly in order to begin the strinking stroke. This is not due to malfunction of the tool. It means that the safe guard mechanism against no-load striking it working.
2. By utilizing the weight of the machine and by holding the hammer with both hands, one can effectively control the subsequent recoil motion. Preceed at a moderate work-rate, the use of too much force will impair efficiency.
Sometimes the tool does not begin the striking stroke even when the motor rotates because the oil has become thick. If the tool is used at low temperatures or if it is used after a long time idle, the tool should be used running in for 5 mins in order to warm it up.