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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14436
Experience:  Certified on Onan and Generac generators
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The fuel pump runs all the time and the start stop switch

Customer Question

The fuel pump runs all the time and the start stop switch does not work
5OBGA 16004C
Submitted: 2 months ago.
Category: Small Engine
Expert:  Hank F. replied 2 months ago.

Hello, my name is ***** ***** I am going to assist you with this.

This unit is not the easiest unit there is to work on, and it can take some time to track down an electrical issue.

First, unplug the remote connector from the genset, and see if this makes the fuel pump stop.

If it does, there is a short in the remote harness.

Does this make the fuel pump stop?

Customer: replied 2 months ago.
Expert:  Hank F. replied 2 months ago.

Inside your control box, there are 2 relays.

All of the wires attached to one of the relays will be labeled K2 -X. This is relay K2.

All of the wires to the other relay (K3) will be labeled K3-X.

At the K3, locate the wire labeled K3-86 R1, and disconnect it from the relay.

Does this shut the fuel pump off?