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If your John Deere 4600 shuts off when put in gear, even after bypassing the seat switch, there could be several potential causes for this issue. Here are some troubleshooting steps you can take:
Check the Neutral Start Switch: The neutral start switch ensures that the tractor can only be started when it is in neutral. If this switch is malfunctioning, it may cause the engine to shut off when you engage a gear. Inspect the switch for any visible issues and consider testing or replacing it.
Inspect the PTO Switch: The power take-off (PTO) switch should be disengaged when shifting gears. A malfunctioning PTO switch could be causing the engine to shut down. Check the PTO switch for proper operation.
Examine Safety Interlock Switches: There are often multiple safety interlock switches on a tractor, including those associated with the brake, clutch, and other safety features. Check all safety interlock switches to ensure they are functioning correctly. A faulty safety switch could shut down the engine when a gear is engaged.
Battery Voltage and Connections: Low battery voltage or poor connections could lead to electrical issues. Check the battery voltage and ensure that the connections are clean and tight.
Inspect Fuses: Check the fuse box for any blown fuses. If a critical fuse is blown, it could lead to a shutdown when engaging gears.
Fuel System: Ensure that the fuel system is functioning properly. Check the fuel filter, fuel lines, and fuel supply to the engine. Lack of fuel flow could result in the engine shutting down.
Engine Sensors: Modern tractors are equipped with various sensors that contribute to engine control. A malfunctioning sensor, such as a crankshaft position sensor, could cause the engine to shut off unexpectedly.
Professional Inspection: If the issue persists after checking the above components, it may be advisable to seek professional assistance. A qualified mechanic or John Deere service technician can perform more in-depth diagnostics using specialized tools.
It's important to approach these troubleshooting steps carefully, and if you're uncertain or uncomfortable performing certain tasks, seek assistance from a professional. Additionally, refer to the tractor's manual for specific details about the safety interlock system and troubleshooting procedures.
if the tractor does not start with not connected the connect the if tractor starts then disconnect them if tractor stops connect them and leave them connected disconnect them after tractor is parked.
There is a switch under the seat. Just to test and not to run, you can take a jumper cable and go around the switch. If you find this works, go get a new swtich. It is very important for safety...Good luck...Lee
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