I was at the marina today when a friend's outboard (model 1F06211CK) quit as he was approaching the dock at idle. I thought maybe the idle speed was too low so I took off the cover and examined the carb to bump the idle up a bit. What seemed strange to me was that there were 2 open vacuum ports on the top of the carb between the throttle plate and the choke plate. It seems to me that these ports should be plugged or connected to one another. Can anyone enlighten me? Thanks.