(I post this in hopes that someone else won't go through the aggravation and embarrassment that I went through last weekend... Plus it might be good for a laugh.) Got the fish & ski boat out of storage on Saturday and proceeded to the lake. I've had it for about a year; it's a 20 ft ProCraft with a 200 hp Merc EFI - both are 1994 model year and the engine *always* runs like a top, cranks right up and never gives me any fits. Well, we loaded the boat up, backed the trailer down the ramp and I started cranking (before unhooking from the trailer, as I always do) -- the engine cranked and cranked but wouldn't fire. And after every couple of times I cranked it, the computer in the engine would go "beep beep beep" until I turned the key off. That's a clue, I said, so started digging through the manual for troubleshooting information. I skimmed through it quickly and found that the beeping might mean there was water in the fuel filter, but there a warning light would be shining. It wasn't. Then I read that it might be low on oil for the injector pump. It wasn't. Then I read that it might be that the injector pump had failed. Holy cow! This was going to be the day that my perfect engine let me down! Well, I pulled the boat back up the ramp and loaded my disappointed kids back into the truck, breaking the news that there'd be no boating today. As I was headed back to the storage barn, I decided to take a long shot and see if the local Mercury dealer had any mechanics on duty (late Saturday afternoon). Turns out that, yes there was a guy and he'd be with me in a minute. He walks over to the boat as I'm describing the problem ("cranks just fine, but won't fire"). He casually leans in over the side of the boat and reconnects the lanyard to the kill switch and it fired right up. I just stood there with my mouth open, too embarrassed to say a word. He wasn't going to charge me anything, but I offered him $20 for his time, figuring the education I just got was easily worth that much. Lesson learned: The first thing to check is your kill switch. And read the manual -- the first item on the troubleshooting list was to check the kill switch. But I ignored that, assuming that the kill switch would render the engine completely dead (as in "no cranking at all") but all it does is disable the ignition.