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Ms 290 acts like not getting enough fuel

This saw has a new engine fuel line and filter it might run fine for a while but once it dies or you shut it off its on it will start and rev for a second then bogs to a idle

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  • bscgodin Nov 23, 2008

    Replaced fuel line and filter and spark plug. Engine starts when cold with one or two pulls. It will cut two or three pieces of wood and when it warms up it starts starving for fuel and bogs down and quits. It will restart but only with the choke out and as soon as you start to give gas again it bogs down and quits again.

  • dadwheeler Nov 24, 2008

    Mine cranks right up and runs great for 2 minutes max then stops......re-cranks and does it again.....

  • adrian_king_ Jan 28, 2009

    my bike has quite a big lag and take a long time before it begins to rev up, and i have a very large suspicion that it could be that theres not enough fuel going into the carb and i think this is the problem coz i have a raing air filter.
    thanks!!!

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  • 211 Answers

Hi

check the screen filter from the carb,check the assembly needle-spring -lever,check the fuel filter ,check all the membrans and gaskets from the carb,check the sparkplug pipe if it is fit snugly on the plug.

regards savumihai71

Posted on Dec 02, 2008

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Never use gas that has sit on a shelf for months at a time as it becomes 'stale' (for lack of a proper term). Todays 'formulated fuel' can be a cause a bit of a problem for some small engines. Anytime you refuel, shake the can to remix prior to filling.

The oxygenated nature of the blended gas sometimes causes the chain saws to run a little 'lean'...meaning too much air to fuel ratio which could be a portion of your problem. A lean running saw will run hot and scoring of the piston or cylinder wall is possible. Some finely tuned professional saws need carb adjustments between the summer blend and the winter blend gas.


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