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Hello, should a 530 John Deere have a manual shut off valve at the sediment bowl? My 530 does not have a manual shut off as far as I can see. If not do I need to be concerned about fuel getting in the crankcase?
 

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I think they have an automatic shutoff. It’s run by oil pressure. When there is pressure the bowl opens up. When you loose pressure the flow stops.

If you post a pic we should be able to tell pretty easily.


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Ditto what J3 Driver stated. Factory fuel control valve on 530 model was oil pressure controlled. They normally operate fine until diaphragm &/or sealing washer leak.
 
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