Merc 20hp carb issue

Discussion in 'Outboard Maintenance' started by James_N, Apr 30, 2015.

  1. James_N

    James_N I Love!

      My 2001 mercury 20 hp  ele start , has got to where it wont start if its been sitting overnight . I can very lightly spray starting fluid in carb and it starts easy and will everytime i bump the key for rest of the day .
       I thought maybe ( forgive my lack of correct terms here ) the plunger thing on the carb wasnt getting pushed down when i pulled the choke, however it is. I did notice when i pull the choke a few times gas squirts from this area marked in the picture . Is that why its hard to start on the first start of the day ?
         The motor seems to be and runs fine except that hard first start .  What would i need to replace or fix that ?

  2. noeettica

    noeettica Well-Known Member

    I had that happen replace the diaphragm ...

    but you may need to buy the whole carb kit ...if that's the case rebuild the whole carb ...