Question about Husqvarna 19.5hp 46" Yard Tractor

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I accidentally switched battery cables from positive to negative and vice versa. My lawn tractor started for a second and now nothing. What might I have burn out?

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Posted on Jan 02, 2017

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SOURCE: husqvarna lawn tractor stop running has battery

Does the engine turn over when you turn the key. If it does then it is mostly not getting fuel past the carb into the engine. If it does not turn over then it could be the switch or solenoid but it could also be a problem in your wiring system or a safety switch which is interrupting the ignition.

Posted on Sep 22, 2009

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SOURCE: Husqvarna 48" Lawn Tractor:

The link below for details of wiring. Assuming good connections at the battery and ground to frame. Your unit uses lots of 12v power for charging, lights and the electric clutch (must have good charging system to run this mower). There is a fuse between the amp meter and starter solenoid. If the fuse is open, the meter will not show charge or discharge. No start or even click would indicate that one of the safety cut-out switches is not engaging (seat, break/clutch etc.). Easy to test switches with meter (refer to wiring details at link below). The charging system is easy to test with meter. Once you get the engine running, test for 28volts ac (3600rpm) from two wires at the regulator (two wires from ac alterator under the flywheel of the engine). Then look for 12 to 14 volts dc at the output side of regulator. Good luck with repair

Posted on Jul 02, 2011

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Could be your battery shorted install known good battery, make sure key off. Install positive cable then slap negative cable to negative post if no spark then install. Sit on tractor and try to start as usual if you have problems starter circuit probably starter bad. If not try engaging blades if problem, pto wire grounded or clutch winding bad. If everything OK then shorted battery.

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Check that the blades are not engaged. If they are not engaged and you still have nothing, check battery cables tight. Then check the starting solinoid.

If you have any questions on how to do this or other related, just reply.

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Hello Pappy,

Sounds like it is the starter solenoid that is on the positive battery cable on the right side panel below the battery. Part # 146154. Jump the two main terminals with a screw driver and if the starter turns the engine that's your problem. Be sure to remove the negative battery cable when you go to change out the solenoid.

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I would make sure the fastener fits your battery and vice versa. Make sure it is not upside down or something like that. Is the replacement battery the same size as the old one? Battery REMOVAL & INSTALLATION NOTE: Refer to Section 1 for details on battery maintenance.
  1. Disconnect the negative battery cable from the terminal, then disconnect the positive cable. Special pliers and pullers are available to remove the clamps. Be careful of the many wires and fittings on and around the positive terminal. NOTE: To avoid sparks, always disconnect the negative cable first and reconnect it last.
  2. Unscrew and remove the battery hold down clamp.
  3. Remove the battery, being careful not to spill any of the acid. NOTE: Spilled acid can be neutralized with a baking soda and water solution. If you somehow get acid into your eyes, flush it out with lots of clean water and get to a doctor as quickly as possible.
  4. Clean the battery posts thoroughly before reinstalling or when installing a new one. A light coating of petroleum jelly or battery terminal spray protectant will help fight corrosion.
  5. Clean the cable clamps using the special tools or a wire brush, both inside and out.
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To clean these, ALWAYS disconnect the NEGATIVE terminal FIRST. Removing the positive first can result in accidentally getting your tool between there and any grounded metal; something you really don't want to do to the tool or battery terminal.
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