Another idiosyncrasy the Honda exhibits related to the air vent is it'll clog up on it's own over a season with misc. gunk, spider webs, etc. etc. I've had mine choke to a stop motoring and had to loosen the cap to get where I'm going. The vent is easily dismantled and cleaned. t   Tom Smith and Jane Van Winkle M15--345  Chukar M17--064  Unnamed