My 740 had been running a bit rough and I suspected the fuel filter to be the culprit. I looked around but for the life of me I couldn't find it. Being colder weather now, I decided to go to a local drive through oil change place for an oil change and asked them if they did fuel filters. Yeah, $55.00 installed, they said. I happily paid and they did the job. I watched them find the filter under the car back toward the gas tank, then watched as they cursed and worked away getting it off and getting a new one installed. I felt happier every second as it became obvious to me that this was one of those jobs I really didn't want to do - especially in cold weather. In the end one of the mechanics said "next time you need a new fuel filter, you might consider going to our competition".
The 740 runs nice and smooth now. The old filter was clogged with crud.