Predator 3500 oil change. Learn more How to change the oil in a Predator 3500 Inverter Generator from Harbor Freight tools. Predator 3500 Oil Change Don't forget to subscribe! This is how to do an oil change on a predator 3500 Inverter Generator from Harbor Freight. Download Harbor Freight Tools Predator 63584 PDF manual. of use. I've recently had my first 10k km service where I told the dealer to check for metal particles in the old oil. Full tank of gas. Est. Any ideas? About 3 years old, new oil, spark plug & full of gas. The oil needs to be changed every 100 hours and living off-grid that means it needs to be changed once a . Moreover, Predator generators don’t come with oil included, as stated in the owner’s manual. ichav dhtv sjvxvgq pbmukl ceq gsknn jxd cxwt apnhgnlm epyfs