Onan quiet diesel 7500 generator

[Skyskier]

Originally Posted by Jake21

Just adding my experience. My 7500 does not require a torx to get the filter access panel open, just a finger. Also, I used a socket for the oil drain plug and a standard wrench for the fuel filter fittings with no issue. When I changed the fuel filter, very little fuel came out of the hoses and I did not need to plug them. Now, my genny is an 02 era, so things may have changed on the newer ones. Also, i get my filters at oreilly’s. Fuel is a wix 33063 and oil is as stated 112-0833 or Wix 51064.

No worries Don, I appreciate the input, thanks to EVERYBODY that replied here !.......I'm waiting on one more filter for the generator, I was able to get everything off Amazon, ......I found an old , little, oil filter wrench I'm hoping is gonna work. I'm with you on waiting to do the coolant, I'm aways off for now at least.

Thanx again everybody,
Denny

[Dutch Star Don]

If you're going to change the fuel filter, here is the tip I was talking about. First, if you can find something similar to the cone shape screw on caps that come off tubes of silicone, they work great for plugging the fuel lines while your changing the filters.

The majority of the older Onan diesel fuel filters are square and about the size of a deck of cards. They have two metal fittings and can sometimes be tough to get the fittings started due to the tight work area and stiffness of the piping.

Before you remove the filter, have someone tie a rag around both wrists before you start. This way, as you disconnect the fuel filter, the fuel won't run down your arms.

NEVER use a trouble light while changing fuel filters. I investigated two fires in my career where this was done, one ended up being fatal!