Once you get to Semuc Champey you will forget all about the bike naps. It is such a great place, just leave your bike and helmet with the guards at the gate and spend a few hours swimming in the most unique swimming hole in the world!
I dropped my f650 twice on that road, once on a grader burm going down hill and then again in the middle of one of those crazy 2 tracked cement hills, I was worried I would meet a bus coming down hill as I was going up. The center of those cement hill tracks is about 1 or 2 ft. deep
Riding to Semuc is one of the great rides in Central America!
Oh by the way the spark plug wrench in your tool kit fits the oil filler cap.