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devildog1971's avatar
devildog1971
Explorer
Sep 22, 2019

new 2500 cummins onan

If you have a new 2500 l p generator. the dipstick sits behind what I think is a L P gas regulator, it is very hard to unscrew the dipstick because raised part of the dipstick hits a screw in the regulator. I have to pull on (what I believe) is a regulator and then twist the dipstick real hard to get it out go the filler tube. A dealer installed the generator not the camper factory are all new onan generators like this?
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  • specta's avatar
    specta
    Explorer
    Sep 22, 2019
    I replaced my old Onan 2500 with the new one.
    I think the addition of the propane was an after thought.
    Yep, the dip stick is a pain in the butt.

    The exhaust exits caddy corner from where the original one did
    and the wiring harness is different and takes an harness adapter
    that Cummins/Onan offers for about $28.

    I'm pretty sure the generator was made in China and is some cheap knock off
    disguised to look like the original Cummins/Onan 2500.

    It does start and run just fine. The RPMs only take a small dip when I fire up the AC.

    I hope this one lasts longer than the 200 hours that were on the original generator when the stator and armature puked.

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