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My Kubota -21 starts but shuts down when key returns from…

my Kubota b-21 starts but...
my Kubota b-21 starts but shuts down when key returns from start position to running. three safety switches are not the problem. Is there another somewhere?
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Answered in 7 minutes by:
2/9/2016
Mechanic: Curtis B., Technician replied 6 years ago
Curtis B.
Curtis B., Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 43,570
Experience: Technican turned service manager on multiple lines of equipment and rental equipment.
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Safety switch would keep it from starting, would not shut engine off when key is released. Does tractor kill with key or throttle, or cable? Looks like it kills with key, which means it has a fuel shutoff solenoid, just to the left of the injection pump body.

Check the solenoid harness with the key on for battery voltage. If it has voltage, the solenoid is bad. It has two coils, one for start, which pulls the solenoid when cranking, so engine starts, then a second coil, that has to be powered at all times the key is on. This coil is likely bad, if you have power to it.

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Mechanic: Curtis B., Technician replied 6 years ago

Should look like this.

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Mechanic: Curtis B., Technician replied 6 years ago

Sorry, the second one should be the B21

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Mechanic: Curtis B., Technician replied 6 years ago

Thank you. Please accept and rate to close.

Curtis B.
Curtis B., Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 43,570
Experience: Technican turned service manager on multiple lines of equipment and rental equipment.
Verified
Curtis B. and 87 other Agriculture and Farm Equipment Specialists are ready to help you
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Mechanic: Curtis B., Technician replied 6 years ago

Thank you!

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