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idle speed 2002 100hp carb. 4 stroke

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  • idle speed 2002 100hp carb. 4 stroke

    Just got head rebuilt from yammie dealer but engine cuts off at idle which is 500rpm. Do I need them to increase the idle speed, (will run at 600-700rpm but shut off at 500rpm, or maybe gas problems, which has E-gas that been in boat for almost A year with stablizer in it. Most online mechanics say E-gas is bad for outboard especially carb. Engines. Need advise.

  • #2
    year old e-gas,bad.

    did the carbs get rebuilt?
    did the carbs get correctly setup after the head rebuild.
    whatever a head rebuild is,

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    • #3
      carb. idle

      yes carbs. were rebuilt and it ran fine the first day in the water, but the second time I notice it was cutting off at idle. Worrying about this situation I started it just yesterday in the yard sitting in 55gal drum, it runs ok at 650-700 rpm, but when I drop it back to neutral or idle 500rpm it cuts off. Will try to bring back to yammie dealer to find out problem, gas or carbs adjustment.

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