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Instruction for exchanging the Gearwheel 3 HP6492/Japan Remove the small gearing cover with a small screwdriver. Here you see the opened gearing. As you can see, the small edge from the release knob is hampering you by removing the damaged gearwheel. Cut this small edge with a very sharp knife, so that the damaged gearwheel becomes free.
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Instruction for exchanging the Gearwheel 3 HP6492/Japan Cutted edge. Now you are able to exchange the damaged gearwheel.