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Strimmer cutting out.

  • 03-08-2015 3:06pm
    #1
    dr.fuzzenstein
    Banned (with Prison Access) Posts: 16,620 ✭✭✭✭


    I have a Shindaiwa SM35 (same as a C35) and it keeps cutting out.
    When it does, I have to re-prime it and it runs again for a while. it doesn't seem to be sucking up the fuel from the tank.
    I got a new fuel line and a new carburettor for it, so every part of the entire fuel system has been replaced.
    If it was a car, I would say fuel pump, but it hasn't got a pump, other than the primer bulb.
    My questions are, how does it possibly suck up fuel from the tank without a pump? And what could cause it to not do that? It seems to get worse when i try it in the garage and I leave off the fuel cap, which makes no sense.
    Here's a link to the service manual, I am currently trying to make sense of it.

    http://golftechs.us/Manuals/shin%20trimmers.pdf


Comments

  • #2
    dr.fuzzenstein
    Banned (with Prison Access) Posts: 16,620 ✭✭✭✭dr.fuzzenstein


    And to answer myself, I may have found it:
    During operation, the fuel pump diaphragm
    responds to crankcase pressure pulses
    generated by the engine’s moving piston.

    My strimmer has baffled me and about 3-4 repair shops for a few years now, it never ran right.


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