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Old 28-02-20, 11:03 PM
Kevin H Kevin H is offline
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Join Date: May 2008
Location: Melbourne, Australia
Posts: 1,170
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There is indeed a hexagonal shaft with a spring loaded pin on the 411, which you need to push in - I used a small allen key to do so. See attached photo.

I assumed the 409 was different given John's comment about removing a pin.
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File Type: jpg 411-heater-control-shaft.jpg (113.4 KB, 11 views)
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