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  1. M

    Mariner 40hp bogging at WOT

    Hi all, I created a post regarding this issue a couple of weeks back but still having the same problem?? I'll try and give as much info as possible... I have a 1993 2 stroke 40hp Mariner with twin Kei Hin Carbs...and running a 10 5/8 x 12 Prop. The problem I have is that the engine bogs down...
  2. M

    40HP engine problem (with pics)

    Hi all, this is my first post and hoping someone could help me. I have a 40hp Mariner Code 6E9 S 019044, Which is a 1993 I believe. I have just bought this engine for my boat and am having problem tuning it properly. The engine revs erratically, high at idle and then will slow down and stall...
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