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  1. R

    Question on fuel pump diaphragms and gaskets

    I have two new fuel pump kits for my '86 50hhp mercury carbs. The new kits have a nylon? cut-out along with the rubber diaphragms and gaskets. On the carbs I only have the rubber diapragms and the gaskets. Should I use the new nylon cut-out when reassambling also? If so, in what order do...
  2. R

    '86 50 hp 4 cyl merc bogs out under load:

    I have a '86 50 hp mercury that starts and idles fine, even going to higher rpms, but when I put it in gear it bogs out immediately. I just changed out the fuel pump diaphragms and gaskets, but might have done it incorrectly, as the new kits had an extra nylon-looking diaphragm that wasn't on...
  3. R

    fuel pump diaphragm and gaskets

    I have an '86 50hp Merc 4 cyl. I just bought 2 sets of fuel pump diaphragms and gaskets for the fuel pumps. I notice there is a thin nylon diaphragm (?) in each pack along with the regular rubber ones. The existing fuel pumps only have the rubber diaphragms. Should I install the nylon ones...
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