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  1. R

    Setting timing on Merc

    I’m looking for some help unde I’m looking for some help understanding how to set the timing pointer on my 1990 Merc. 100. I’m having a problem understanding the dial reading or what they are actually asking for. I’ve used a dial before but what they are asking doesn’t make sense to me. The...
  2. R

    Poor running mercury

    "I have a Mercury 100 it’s bet "I have a Mercury 100 it’s between a 89’-91. Ser. # is0C216409 model ELPTO it’s an inline 4 cyl. 2 stroke. The engine starts up fine but idles a little rough and it keeps popping or backfiring when it does it stumbles, gives out a puff of blue smoke, idle drops...
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