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k321 fuel pump rebuild - 75 PK 1614


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#1 LA2TN OFFLINE  

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Posted January 31, 2017 - 06:17 PM

Hey guys.  I'm still trying to get my late father's PK up and running.  After new battery, cleaning out gas tank, fresh gas and fresh oil, I've tried to start it only to discover that the fuel pump is leaking and gas was not getting to the carb.  I bought a rebuild kit and I'm trying to rebuild it.  I have never rebuilt a fuel pump before so these are uncharted waters for me.  I took off the 4 screws on the top of the pump and I see these two diaphragms (not sure if that's what they are) on the top of the pump.  In my kit I have two new diaphragms.  Do I need to replace these and if so, how do I get the old ones out?  

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#2 boyscout862 ONLINE  

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Posted January 31, 2017 - 08:18 PM

Download the Kohler Manual from our Manuals Section. It will have instructions on how to rebuild it. Be very carefull with the cleanning and assembly. Good Luck, Rick

#3 todapuckett OFFLINE  

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Posted January 31, 2017 - 09:44 PM

those are the inlet and outlet check valves and it is a good idea to replace them.  They should simply pull out, you may need to pry them with a small screwdriver or something similar, and the new ones are just pushed in.  Make sure you install them the same way they came out, otherwise fuel won't flow.   


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#4 LA2TN OFFLINE  

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Posted January 31, 2017 - 11:13 PM

I have the Kohler manual but I didn't think to look there. There is a schematic of the fuel pump in there which is great! I wasn't sure if I should pry the check valves to get them out. Will tackle that tomorrow and see if I can get fuel to the carb and see if she will fire up.




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