Introduction
Follow this guide to remove the power switch for the Karcher 15209900 electric pressure washer.
Some of the body screws are deeply recessed and require a T15 driver with a 5-inch long shank in order to reach.
Tools
Parts
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            Use a T15 driver to remove the six screws securing the top black plastic panels on either side of the device. 
 
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            Use a T15 driver to remove the ten screws securing the housing halves together. 
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            Remove the T15 screw underneath the wheel axle. 
 
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            Make sure that all five bushings are in place. 
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            In order for the housing to fit properly, the bushings must fit in their respective mounts. 
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            Make sure that the yellow tube is properly notched onto the housing. 
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            Make sure that the power cord strain relief sits correctly in the housing notch. 
 
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            Pull the switch out of the electrical box. 
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            Disconnect the four spade connectors from the the switch. 
 
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To reassemble your device, follow these instructions in reverse order.