AnalogMan wrote:How can the old fuel hoses be removed?
The fuel hoses on my boat have been in place for almost 20 years, and they are very well bonded to the inlet and outlet ports.
Your question reminds me of an old joke: How many therapist does it take to change a lightbulb?
Answer: it only takes one, but the lightbulb really has to want to change.
There is a corollary in that joke to removing old mechanical parts.
When working on many mechanical things and trying to replace a certain part, the hardest task is often getting the old part to come loose so it can be removed. The secret to getting an old part to come loose is
you have to really want to change that part. Old parts are generally not going to be very cooperative. You have to force them to come loose.
As PHIL's method suggests, if you are going to discard the old part once you remove it, then there is no need to remove the old part
intact. You can cut it or grind it or heat it or do almost anything you want to the old part to get it to come loose, as long as you do not do any damage to the GOOD parts around it. And old parts will test your resolve. The will challenge you: how badly to you want this old part to come out? Sometimes you have to really, really, really want that old part to come out in order to get the old part to cooperate.
When you buy replacement fuel hose be sure be to sitting down when you get the prices. Some typical high-quality marine grade 3/8-inch ID rubber fuel hose that meets the latest EPA specifications about permeation is now being sold at retailer at crazy prices. Be sure to shop carefully. Here is some on Amazon at over $4-per-foot:
https://www.amazon.com/Sierra-116-368-0 ... B0002CAD9Y