2-cycle Prob

Discussion in 'Mechanic and Repair' started by mnstrohm, Apr 30, 2006.

  1. mnstrohm

    mnstrohm LawnSite Member
    Messages: 11

    I've got a 2-cycle Toro that's been a great mower. Yesterday I went to start it and my arm abour got yanked off. The pull-cord would barely pull. I pulled the plug and the cord pulled fine. Put the plug back in and the same problem as before; no pull. The plug is new this season and machine has been running great with it. Any suggections for a not so great engine technician? Thank in advance
  2. riches139

    riches139 LawnSite Senior Member
    Messages: 369

    Sounds like fuel in the cylinder.
    Fluids don't compress.
  3. MowerMedic77

    MowerMedic77 LawnSite Bronze Member
    Messages: 1,164

    I would say to check for fuel in the cylinder if the carb is flooding that will happen, but the one thing you first said is that the mower yanked your arm maybe I am reading it wrong but 2cycle toros are prone to flywheel key shearing, if you have hit something hard with the blade then it is possible that the key is broken. Hope it helps:)
  4. dutch1

    dutch1 LawnSite Silver Member
    from Jayhawk
    Messages: 2,249

    When you cranked it with the plug out did you get any fuel to blow out of the plug hole? If you got any at all, tip the mower down(raise the rear wheels) and crank it over several times as you may have excess fuel in the block as well as the cylinder. Liquid lock seems to be the most realistic although a sheared fly key is a possibility even though they will normally still crank with a sheared key.

  5. mnstrohm

    mnstrohm LawnSite Member
    Messages: 11

    I took the plug out for about 36 hours and tried again a couple of hours ago. It started fine and ran good. Hopefully it was just a freak thing.

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