Re: Aml35d
It was for the dewatering ability I guess. They would pop them up off submarines, pull the dewatering knob, pull about ten times then start the motor and go. I think they knocked out the molded in circles out of the front of the exaust/mid section to help drain it quickly and relieve some compression.Before I rebuilt it, I covered the holes and ran it for a bit and it wouldn't run right. Mine blows exaust all over the steering tube. I haven't checked but I suspect the carb has big jets in it...waiting for a good breakin period before I rebuild the carb again and check jet size.With 25:1 mix in it, it really chokes me.