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jeffo's avatar
jeffo
Explorer
Jan 17, 2015

Onan Generator wil not Prime

I have a 2013 Onan 5500 gas generator. I was going to exercise it today and when I hit the prime I cannot hear the pump running. It turns over fine but will not start. I assume it not getting any gas. Not sure if the pump you hear when you prime is the fuel pump that also feeds the carb after it is started. I checked all the wires that I can see, all look fine. Not sure where the primer pump is? It ran fine last month and the gas tank is full.
  • azrving's avatar
    azrving
    Explorer
    Jan 17, 2015
    jeffo wrote:
    5.5 HGJAB. Not sure what the spec # is. I will try to find it tomorrow.


    I'll look further. That may be enough

    Service Manual
  • jeffo's avatar
    jeffo
    Explorer
    Jan 17, 2015
    5.5 HGJAB. Not sure what the spec # is. I will try to find it tomorrow.
  • azrving's avatar
    azrving
    Explorer
    Jan 17, 2015
    With a quick look at the service manual it appears that it would start the pump. Need the model and spec number off your unit to actually look at a schematic and read their operation description as to what is doing what as you start it.

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