I would not be surprised if the western companies selling these type of units simply provide the design for the external casings and the Chinese supplier fits their standard mechanism to the molded casings. It also helps stop mains spikes reaching the motor.ĥ.The motor, gearbox and blade reciprocating unit are at the bottom of the casing. The wires from the switch are wound on a ferrite loop, to block 'common-mode' noise from the motor being fed back into the mains. The small black item is a filter capacitor to cut down RFI/EMI.ģ. In this picture, going from the left to right the main parts are.Ģ. The internals are pretty much universal, the only difference is the external casing shape and colour. The generic models(non 'Big Brand' name) sold by large DIY chains etc on the high street or on-line over the past 15 years are generally made in China. I have dismantled a number hedge trimmers over the years. Note: Mechanical safety interlock parts removed for clarity. Unfortunately when the motor power decreased it would tend to cause the motor to stall and the blades jam in the hedge. The motor would run for a few seconds and then would lose power then start to operate normally again. This tended to result in the blades 'finding' the thick 'woody' parts of the hedge causing the blades to jam, in turn causing the motor to stall which results in large surge currents flowing in the motor. He did tend to put the blades at an angle to the hedge and dig into it rather than keeping the blade parallel to the surface of the hedge. Then he would have a spare machine in the event he had problems with the new one! This makes it sound like there is a whole world of failing hedge trimmers out there which hopefully there is not but i was aware that my Mum's neighbour did tend to put rather a lot of strain on his hedge trimmers in the way he used them. I was rather disappointed that he had not spoken to me about the problem so i said i would at least strip it down to have a look at it and if it could be repaired i would do so assuming that the cost was not excessive. I was admiring his new one when he told me that this one had stopped working reliably so he had purchased a new one. My mum's neighbour is now on his third hedge trimmer in about 5 years.
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