The iboats forum moderators are excited to announce that at this time it appears the iboats forums posting pictures function is working once again. Though we cannot promise for how long, we're hoping for indefinitely.
It's probably got dirt in the small water intake on the leading edge of the outdrive. Look at the trouble shooting section of your owner's manual. It's a very common problem. So common if fact that I got tired of worring about it and now just leave it full of dirt or whatever is plugging it up. My speedo hasn't worked in three seasons now.