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Fuel pump repair kit 1931 90 series


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The critical parts for the fuel pumps are the diaphragm, the valve disks and the valve springs.


According to my parts manual, these parts are common with  1931 parts for all series and most are common with 1932 50 series.  


I hope the parts manual pages are legible on the attached photos.  You may need to make some gaskets but I believe you can get a kit that will work in your 1931 90 series.


Bob's may not have kits specifically for the 31-90,  but 2 months ago he had the 32 50 series kits.



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