I'm pretty sure its 1.5" i.d. Make sure that this fuel fill hose has wire in it, is rated for fuel, double clamped at the fill and at the tank and to be safe should have a bond wire from the metal fuel fill itself to the tank/bonding system. Attach a top grade hose clamp SS to the bottom side of...
I had the same black hose on my Parker 05, 2520. My black hose split while I was using my salt water washdown pump. It broke right behind the fitting where the cockpit washdown hose attaches.
I changed out all of my hoses to thick wall wire reinforced hoses and double clamped every connection...
I have a 2005 Parker 2520 with twin Yamaha 150 4 strokes. I found the same problem with both of my engines. My bolt that was holding the DC engine ground wire/cable to the engine block on both engines was loose. But the biggest problem was were the engine block was painted outside and also...