9.9 "wash" screw on lower end., what is it?

[Capt. John Deering]

changed the lower unit oil today and noticed a "wash" screw beside the top lower unit plug. looked in the handbook, no explanation.....does anybody know what this is for and how it works? its a 9.9 four stroke yam. motor.

[slim]

its for a flusher attachment

[Capt. John Deering]

thanks slim, what kind of attachment do you use? I use the regular washdown collar hooked to the hose. still, nothing in the manual, how does the gizmo work...got a web page link i can read? thanks

[boats.net]

You remove the flush screw and thread in ABB-FLUSH-JD-00 flusher and turn water on. It allows you to flush out without running motor.