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Repair guides and support for riding lawn tractors sold under the Murray brand name, currently owned by Briggs & Stratton.

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Switch won't start engine

Engine will run when jumped @ solenoid but switch does nothing but turn on lights. Switch does have to be in on position to jump @ solenoid. Switch tests as good...wires are good. What else could it be?

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The earth ground wire was good but when I changed it's position from bottom to top of post...it worked...thanks for the tip!

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Hi,

Have you checked the earth (ground) connection to the solenoid coil?

Power for the solenoid comes through the switch (from the solenoid contact terminal - the same terminal that the battery lead connects to, not the solenoid contact terminal that connects to the starter motor) to operate the solenoid.

As you said that the switch is OK and have replaced the solenoid with a new one then the problem is either the wire to the switch from the solenoid contact, the wire to the solenoid coil from the switch or the earth connection to the solenoid coil.

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It's connected...how do I check it?

@jayeff , @edd1 , there are various safety switches that may stop the engine from starting, perhaps seat switch,etc should be checked.

Hi,

Have you got a test lamp or a Voltmeter?

If so check that when you operate the switch that you get power to the solenoid coil terminal. If not check that you have power on the switch coming on the wire from the solenoid contact terminal where the battery lead is connected to and then that there is power leaving the switch on the wire going to the solenoid.

To check the earth connection, if you have an Ohmmeter you can test for continuity between the earth and the solenoid coil terminal or simply run a temporary connection from a good earth point on the mower to the solenoid coil earth terminal and see if it operates with the switch operated.

Hi @lpfaff1 ,

Thanks, forgot about the safety switches

It wouldn't start by jumping the solenoid if a safety switch as bad...would it?

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The solenoid. Go to your local home improvement store or lawn mower/tractor store and get a new solenoid.

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Brand new...anything else?

new solenoid? Try the old one, see if that makes a difference

Also check it is wired up correctly

Not enough a.Prague to spin motor o Er new battle n ew starter. Jump from. Car starts. The wiring doesn't carry e. Enough. Amp to spin motor ???

I am have almost same problem everything has been replaced but key won't start engine but if cross solenoid it will start

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Motor won’t turn over for a number of reasons. all must be eliminated

  1. battery issue - dead or high resistance
  2. safety switches - clutch, seat
  3. bad connection - corroded, loose, broken on battery to starter or in ignition circuit.
  4. ignition switch
  5. starter solenoid
  6. starter

#

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