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www.partsfortechs.com > Home > Generator Part Generator Parts Spark Plug # RS17YX for Onan 167-0272 on RV Gensets ... for this plug require the spark gap to be set at .025" (25 thousandths of an inch).
https://www.heartlandowners.org/.../39632-Onan-Gen-HGJAB-What-is-t... Jun 8, 2013 - 3 posts - ‎3 authors
Also what is the the correct gap on the plugs? ... brands · Generators; Onan Gen HGJAB What is the best spark plug and gap? ... Gap: 0.025
Did you change the pump with the correct Onan pump, these are special low pressure pumps, and automotive pump will not work and can cause dangerous flooding and carb issues.
Usually what that means is that the genset Configuration is not set correctly you will need to bring it to a factory authorized service center for them to correct this.
Either you have a kill wire ( if I remember it is the brown wire) that is disconnected on one end or the other Or your in coach switch is bad. Check the switch this way
Remove the switch from the dash/ mounting surface unplug the brown wire - start the genset - ground the brown wire - it should kill the motor If it kills the motor your switch is bad
is it an electric start?...if so check battery and/or look for loose battery cable..Ground?...vibration during use could have loosened the cables...the make ready people sometimes do not tighten properly
If the govenor didn't work that means that you placed the linkage on the carberator the wrong way. This will cause the genset to overspeed and possibly stop the genset from creating voltage. If the genset does not create voltage then you won't have a charger. Fix the linkage first by looking to make sure that the throttle plate is closed before starting genset. Once you start the genset check for voltage.
1. Does the generator stay running when you start it the first time?
2. What color is the housing on this generator? Try to get the model number and serial number.
If the genset is shutting down on the first try, then your probably not creating voltage. However, if this is an older unit then the genset may stay running although no voltage is created. Place a volt meter on the genset to check for output voltage.
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