| thirdchildhood |
07-12-2021 08:35 AM |
Adventures in 525 Fuel Filter Replacement
In another thread by "imartin" it was brought to my attention the the 525 EFI has a second fuel filter at the rear of the engine. Mine was original with about 450 hours. imartin contacted me and we talked on the phone and he informed me that this job is not as easy as it looks. He was right. I was able to get a 7/8 wrench on the top of it but the filter turned in it's bracket. I fabricated a clamp to prevent it from turning but it still wouldn't budge. At this point I knew I'd have to remove the entire filter and work on it on the bench so I removed the port battery so I could lay down next to the engine and remove the bottom fuel line which was difficult because of the Q&Q down pipe being in the way but I got it out. I clamped the built in 7/8 hex on the bottom in a vice and tried to remove the top with a 7/8 wrench. It wouldn't budge and started to turn in the vice. I then clamped another 7/8 box wrench in the vice to hold the filter and put two 7/8 wrenches on top of each other in opposite directions and push/pulled with all my strength and the top popped loose! It was difficult to blow through the old filter element at first and I wonder how this was affecting my fuel pressure/flow at high speed? Anyway the filter is good for 100 hours so this will be done every 3 years and next time it will be easier because i know what I have to do and will be prepared. There is no way that filter was going to open while still on the engine. Now I'm curious if this will change how the boat runs! imatin, I hope you see this as I told you I'd give you an update. I'm sorry but I forgot your real name. I also changed the spin on filter/water separator.
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