oneshort 4 #1 Posted September 21, 2016 Hello All; My 876 has the pulse operated pump and i would like to know if the two flat, round wafers are supposed to be hard or soft. If soft can i use diaphragm material to make new ones? thanks ! oneshort Share this post Link to post Share on other sites
rjg854 10,642 #2 Posted September 21, 2016 I believe they are hard. Share this post Link to post Share on other sites
953 nut 51,018 #3 Posted September 21, 2016 The wafers you are referring to are check valves that allow fuel to flow in one direction only. Share this post Link to post Share on other sites
Racinbob 10,204 #4 Posted September 21, 2016 Check these out. http://then-now-auto.com/product-category/fuel-pump-kits/kohler-fuel-pump-kits/ I wasn't even aware that Kohler used anything but the mechanical pumps on the K series until a few months ago. Buckrancher bailed me out on that one and I did some serious research. They are hard and their purpose is as Richard mentioned. 1 Share this post Link to post Share on other sites
oneshort 4 #5 Posted September 21, 2016 Thanks Guys! Share this post Link to post Share on other sites