Topic: breather/vent hoses 400f

[thirsty 1]

Question for those who know or don't .     400F - one breather hose from the valve cover to the ? atmosphere?  does the one from the airbox drain go to the filtered side of the intake? Mine didn't any of them so Im just trying to get it back in the proper order.

thanks guys
Thirsty

[oldbob]

The crankcase breather hose connects the top of the motor (breather cover, I think) to the air box drain.

Bob

[thirsty 1]

The crankcase breather hose connects the top of the motor (breather cover, I think) to the air box drain.

Bob

Ok thanks. It's kind of a closed loop type of a deal. I only ask because on the air filter housing I have a round drain with two ports on it. I thought maybe the crankcase fumes would be filtered, so air filter would catch any oily fumes. That would in turn leave the air box drain open to the atmosphere so that wouldn't work.

[flybox1]

The crankcase breather hose connects the top of the motor (breather cover, I think) to the air box drain.

Bob

Ok thanks. It's kind of a closed loop type of a deal. I only ask because on the air filter housing I have a round drain with two ports on it. I thought maybe the crankcase fumes would be filtered, so air filter would catch any oily fumes. That would in turn leave the air box drain open to the atmosphere so that wouldn't work.

one pointing to the side is the inlet from the breather tube, which allows the vapor to be recycled back into the engine.
the down spout is the outlet and collects the leftover effluent, which is cleaned out at service intervals.
if you've never opened this filter up, you need to.  its probably filled with mayo.