Log In | Register
Skip to main content
Topic: Onan Fuel Filter (Read 221 times) previous topic - next topic
0 Members and 2 Guests are viewing this topic.
Onan Fuel Filter
I am attempting to change the fuel filter on the Onan generator and have come across a hose clamp that I’m not familiar with.  Is this a reusable hose clamp and, if so, how do I get it off?  I clamped the fuel line with vise grips but don’t want to take the hose clamp off unless I know how it works.
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: Onan Fuel Filter
Reply #1
It's not reusable.  I remove them with snips like this:

https://www.youtube.com/watch?v=NEQs_XaY9DI&ab_channel=4DIYers

Unless you suspect an issue, you might not need to change the fuel filter.  I'm not sure what the onan recommendation is (500 hours maybe?) , but modern gas in a fairly new vehicle is remarkably clean.

Rich
2003 MB

Re: Onan Fuel Filter
Reply #2
Thanks, Rich. I think the one manual I do not have is a generator manual so not sure what the recommendation is.  The generator only has 104 hours on it right now so maybe I’ll just hold off until I can find out what the recommendation is. 
I thought I read somewhere, maybe in the Lazy Daze manual, to replace it once a year, though.

Edit: I looked in the Lazy Daze manual and it makes no mention of replacing the fuel filter as part of a yearly tuneup so will hold off for now.
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: Onan Fuel Filter
Reply #3
Thanks, Rich. I think the one manual I do not have is a generator manual so not sure what the recommendation is.  The generator only has 104 hours on it right now so maybe I’ll just hold off until I can find out what the recommendation is. 
I thought I read somewhere, maybe in the Lazy Daze manual, to replace it once a year, though.
My Onan manual says change the fuel filter at 450 hours. It's the amount of fuel that goes through it that's important, not how old it is, and hours is an easy proxy for fuel volume.
2005 Jayco 24SS

Re: Onan Fuel Filter
Reply #4
Thanks, Eric! Noted for future reference. At my current rate of use, I will be changing it in about 14 years.   ;)
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: Onan Fuel Filter
Reply #5
“I think the one manual I do not have is a generator manual”

Hope this helps, Greg
Warren
2019 MB “Dream Catcher”
Jeep Wrangler JL

Re: Onan Fuel Filter
Reply #6
Thanks, appreciate it Warren!
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: Onan Fuel Filter
Reply #7
This is an Oetiker Clamp. Most commonly found on high-pressure fuel injection lines.

Charles
Harvest Hosts + Boondockers Welcome #23975
Escapees SKP #138195
2007 23.5' Twin King

Re: Onan Fuel Filter
Reply #8
Greg, most if not all the Onan/Cummins manuals are available for download.

Steve
2004 FL
2013 Honda Fit

 
Re: Onan Fuel Filter
Reply #9
My manual says nothing about changing the fuel filter.

Ken F in NM
'08 MB

Re: Onan Fuel Filter
Reply #10
This is an Oetiker Clamp. Most commonly found on high-pressure fuel injection lines.

Charles, these types of clamps seem a bit overkill for the application.  I can’t imagine that the fuel pressure going to the generator feed is very high.  When it does come time to replace the fuel filter, what would be a suitable replacement clamp?

Steve, the only generator info that I received when the LD was purchased was a CD with product information on it but I was unable to access the data for some reason.  Good to know the manuals are online.  I printed out the KY manual that Warren provided.  I’ve already done most of the maintenance items except for the spark arrestor cleaning so will do that next.  I bought two fuel filters, thinking it was a yearly replacement item.  Anyone need one?  😉
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: Onan Fuel Filter
Reply #11
My manual says nothing about changing the fuel filter.

Ken, the KY manual states to replace it at 450 hours or sooner, if engine perfomance deteriorates.
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: Onan Fuel Filter
Reply #12
Charles, these types of clamps seem a bit overkill for the application.  I can’t imagine that the fuel pressure going to the generator feed is very high.  When it does come time to replace the fuel filter, what would be a suitable replacement clamp?
Greg, here are other options. Pick one and be sure to get the correct diameter.  ;)

T-Bolt
Worm Gear
Nylon Ratcheting

Charles
As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
Harvest Hosts + Boondockers Welcome #23975
Escapees SKP #138195
2007 23.5' Twin King