Originally Posted by GT4six
do you mind sharing the steps to change the oil n filter. I think is time to do it since it has a bit over 60.
Don't get me wrong, I change the oil on our cars...just dunno what sequence (if any) on a gen ...keep it to yourselves but I have made a few mistakes in the past cause I thought I knew what I was doing....haha
Step 1 - Run generator and warm oil.
Step 2 - Get bucket to catch oil and place under drain line.
Step 3 - Open oil fill cap
Step 4 - Unscrew oil filter with wrench from below.
Step 5 - Open oil drain valve and drain rest of engine.
Step 6 - Dip finger in fresh oil and oil the oil filter rubber gasket.
Step 7 - Screw oil filter in by hand. When tight give it another 1/4 turn to seal.
Step 8 - With funnel add 2 quart of SAE 30 weight oil. If you are level that is all it needs. If you are in a cold climate you may use 10w30 but check you ONAN manual.
Step 9 - Remove spark arrestor and clean with a brush and brake cleaner or some non flammable liquid. Some use gasoline but I don't.
Start up and check for leaks around the oil filter.
After it runs awhile the oil filter may be tightened a little more if you can.
That's what I do.
PS If you don't have the ONAN Service Manual on your computer here is mine for the 5500 watt ONAN.