New here to this forum, so hello. I was searching the web looking for info on my diesel and came across this site, maybe they know something about my problem, I thought. So here I go. I got this Isuzu diesel in a Bobcat that's leaking fuel under a cover on the injector pump.( see pic, the football shape with two bolts ). It looks like a easy fix, but thought I'd ask first before removing the cover and resealing it. Do I need to worry about anything coming out besides fuel, like a spring or who knows what. And what I might need to do after resealing it. Any help will be great, and thanks.

There is just a o-ring under there, easy fix.

Thanks for the info. It's nice to know before I tear into the repair. Speaking of O-rings, is there a special O-ring for fuel or is a O-ring a O-ring? With the price of fuel at $4.50 a gal. I need to get it fixed sooner rather than later, it's like watching pennies dripping out of the pump.