Sounds silly but is TRUE...check oil level. Make sure it's a tiny bit over the max on the dipstick. Assume you have the same 2010 Onan propane gen.. Was told by Onan to check oil level as it's very sensitive to lower levels of oil. Did just that and starts forevermore. Onan discontinued the oil level sensitivity detection for starts in newer models.We are the proud owners of a 2015 Free Spirit SS with low generator hours. The generator turns over nicely, but does not start. Propane tank is full, switch is on, and propane stove works fine.
Any thoughts on why the generator might not be starting?