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Rep: 13
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I am having trouble removing the bump knob on my Ryobi RY40002 trimmer. I need to remove it because the line is stuck inside. With pliers, the knob will rotate and click, but that is all. It does not loosen. Any hints, tips?
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Rep: 13
1
Had same problem. Bump knob unscrews clockwise (because of head rotation) not counterclockwise. I first turned it counterclockwise and when I realized it should be clockwise it would only turn freely without unscrewing. Finally I managed to force two flat head screw drivers under the rubber bump knob followed by a pry bar and successfully pried the rubber bump knob straight up off a 1/2” hex head bolt. The bolt was then very easily unscrewed with a socket and ratchet but any wrench will do as this was the easy part. The mechanism for the trimmer line can then be removed. There is a youtube video on the rest.
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