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-   -   Mtd lawn mowers troubleshooting (https://www.askmehelpdesk.com/showthread.php?t=463216)

  • Apr 7, 2010, 10:32 AM
    ytd12542
    Mtd lawn mowers troubleshooting
    Lawn tractor will not start. Had battery charged, goes to 15amp makes tatata sound when turn the ignition key. Please reply
  • Apr 7, 2010, 11:01 AM
    smoothy

    Have you load tested the battery yet? Sounds like a weak cell, most automotive stores will do it for free.
  • Apr 7, 2010, 01:59 PM
    ytd12542

    I had it charged.
  • Apr 8, 2010, 04:46 AM
    smoothy

    I did't ask if it was charged, I saw in your post that it was. I asked because Load tested is another thing entirely.

    Those symptoms are of a battery that can't deliver anywhere near its rated capacity as far as discharge amps are concerned. A battery CAN take a charge and not deliver anywhere need enough cold cranking amps.

    Lawn and garden batterys tend to be of low quality. And I have had them fail in just one year.
  • Apr 9, 2010, 02:27 PM
    ytd12542
    I replaced the battery, it did not have enough cc amps. However, the lawn tractor runs a bit rough. Any suggestions would be helpful.
  • Apr 9, 2010, 04:20 PM
    KISS

    Might be a little water in the gas. Add the recommended amount of Seafoam to the gas and inspect the air filter and plug.
  • Apr 9, 2010, 04:21 PM
    smoothy

    You park it with fuel in it over the winter like a lot of people... right.

    I'd mix a can of carb cleaner in a 5 gallon can (not a tank) of gas. Seafoam mentioned above is a good brand. (You get what you pay for, don't expect miracles from anything you pay a dollar or two for) That will clean out the carb as you are running it. Expect a few tanks before its really finished its job.
  • Apr 9, 2010, 05:08 PM
    ytd12542

    I thought so thank you.
  • Apr 9, 2010, 05:19 PM
    KISS

    On your last few trips to the gas station in the fall, add Sta-bil to the gas that you buy.

    Run the gas out of the mower before storage, but there may still be some in the bowl.

    In the OLD days, there was a fuel cut off valve and a bowl vent that you could drain the bowl with a push of the finger.
  • Apr 10, 2010, 05:35 PM
    ytd12542

    Did all that now the lawn tractor starts then dies. Please any help would be greatly appreciated.
  • Apr 10, 2010, 05:38 PM
    DG

    Hey YTD did you take the bowl off the carb and clean it out.
  • Apr 10, 2010, 06:41 PM
    KISS

    The sound indicates to me that either you have too much battery series resistance and/or the bendix is not engaging the flywheel. The bendix is made to be expendable.
  • Apr 11, 2010, 05:53 PM
    ytd12542

    Please explain does this involve the belts. Where is the bendix located?
  • Apr 11, 2010, 06:31 PM
    KISS

    How about a make/model #?

    Here is an example from an outboard engine. http://www.oddjobmotors.com/images/e...lginbendix.jpg Note, it's a plastic gear on the end of the starter.

    I can't find a good pic of what I'm looking for, but basically it's a gear that moves to engage the flywheel when the starter is cranked. It retracts when the starter is shut off.

    That plastic gear may be damaged.

    It may have gotten damaged because of valve clearance.

    First:
    Take the plugs out and try to engage the starter. You may not hear that sound anymore, but will engage. This is what I think will happen.

    Next steps would be to examine the gear and check the valve clearance.
  • Apr 12, 2010, 05:03 AM
    smoothy

    He says its cranks now... but starts then dies.

    Its indicative of most likely a gummed up carb that's disturbing the Air fuel mixture... from partial retriction of the jet.

    It will need to be cleaned well with a solvent that will disolve those residues from the jets, vents, etc.
  • Apr 14, 2010, 11:14 AM
    ytd12542

    Briggs and strattton engine model -289707 mtd model #135l671f336. It will not start at all nothing happens when I turn the ignition switch. New battery new solenoid new fuel filter cleaned the carburetor changed the spark plug ------NOW nothing ----no sound nothing. The battery has been tested, it is good. Some help would greatly appreciated-----lawn tractor neophyte
  • Apr 14, 2010, 12:15 PM
    smoothy

    Do you have a voltmeter or a 12 volt test light?
  • Apr 14, 2010, 12:25 PM
    ytd12542

    Thank you it started wrong spark plug---I needed a special spark plug.
  • Apr 14, 2010, 12:50 PM
    smoothy

    That's confusing... A spark plug could not possibly prevent it from cranking at all and you indicated nothing at all was happening..
  • Apr 14, 2010, 06:06 PM
    ytd12542
    Wrong spark plug in the beginning but wire had become disconnected when I checking the last time with the bad battery and spark plug.

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