Question about Craftsman 42 in. Deck 19.5hp Lawn Tractor

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The mower runs fine till you engage the blades then it goes dead

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Hi and welcome to FixYa, I am Kelly. Take a look at the pedal switch wiring. Also check the foot switch to make sure it is NOT grounding when you ease the pedal to it's normal resting position. This is the most common problem however..... Underneath in the clutch area make sure that the clutch wires are not grounded. There is a diode in the PTO clutch and if the diode fails it will present this symptom. Read the Black to Purple stripe wire on the clutch in BOTH directions. One way it should read open the other way it should read like a wire. Most of the time it the blade is engaging and the mower dies it is either the foot switch or a wire in the PTO Clutch area that is grounded.

Thanks for choosing FixYa,
Kelly

Posted on Apr 07, 2011

  • Kelly
    Kelly Apr 09, 2011

    I responded without being provided a model number. If you can locate or provide both a mower model number and an engine number I can locate diagrams to help you. Without a model number it forces me to respond in generic form that does not always result in a customer fixing the problem. From the rating it appears you still have the problem.
    Kelly

  • Kelly
    Kelly Apr 09, 2011

    When you say it goes dead... dead as in like you switched off the ignition or like it is not getting enough fuel? I am just guessing that this is an LT2000 model mower with a model number of 917.276813



    Using this Diagram:

    http://www.searspartsdirect.com/partsdir...

    2 things have to happen to get blade engaement and the engine running.

    1. The seat must be occupied

    2. The clutch brake pedal must be up.



    Power is routed from terminal M on the ignition switch to the black wire (in) on the pedal switch and the Gray wire (out) of the pedal switch. From there it goes to the gray wires on the seat switch (in & out) and then on to ground.

    To get blade engagement you must have Power to the black wires of the clutch (in and out) and Black to black on the seat switch with the sear occupied. The black wire OUT of the seat switch is a ground.



    ANY ground on the black wire coming from M on the ignition switch will kill the ignition. That ground can come from any of the following places. Pedal Switch, Blade clutch, or the seat swtich or the connecting wires to any of the swtiches.



    Kelly


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SOURCE: mower boggs down when blades are engaged

If all pulleys are turning (not bound up) check for belt route misalignment.

Posted on Jun 06, 2010

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