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Curtis B.
Curtis B., Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 3443
Experience:  Technican turned service manager on multiple lines of equipment and rental equipment.
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I have a 420 Deere. Runs great until it gets hot. Cools,

Customer Question

I have a 420 John Deere. Runs great until it gets hot. Cools, starts back up then shuts down when it heats up again.
Submitted: 1 year ago.
Category: Agriculture and Farm Equipment
Expert:  Curtis B. replied 1 year ago.

420 with Briggs? Shows to come with Onan.??

Expert:  Curtis B. replied 1 year ago.

What is engine model number?

Expert:  Curtis B. replied 1 year ago.

When engine quits, do you have spark?

Customer: replied 1 year ago.
sorry. It is an Onan.
Mod. B4.86-GA020/4235F (the best I can see)
Don't know about the spark.
Expert:  Curtis B. replied 1 year ago.

Take spare spark plug, and when engine quits, remove spark plug wire and attach spare spark plug.Crank and look for spark.

Expert:  Curtis B. replied 1 year ago.

If no spark,then coil may be bad.

Expert:  Curtis B. replied 1 year ago.

If it has spark, it is loosing fuel supply.

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