breather removal
Seasoned HDF Member
Joined: May 2008
Posts: 21,143
Likes: 12,707
From: South Carolina
Run the hose down along the frame and outboard of the tire.
Make sure the oil level in the tank is not too high, if it shows full on the dipstick, it is probably overfilled by about 1/2 quart.
Make sure the oil level in the tank is not too high, if it shows full on the dipstick, it is probably overfilled by about 1/2 quart.
Cruiser
Joined: Dec 2007
Posts: 213
Likes: 2
I disagree with Dan. It is a motor breather and should be in as clean a area as possible. Under the bike will not only be dirty but also wet.
Raise it as far as possible as it was stock. This gives the oil a chance to run down the tube and not hit the filter.
Raise it as far as possible as it was stock. This gives the oil a chance to run down the tube and not hit the filter.
Seasoned HDF Member
Joined: May 2008
Posts: 21,143
Likes: 12,707
From: South Carolina
If the hose is up high, any water that gets into the hose is going right down into the crankcase...
Nothing gets sucked into the breather hose when it is low, and no filter is needed on the end.
This setup has worked for me for several hundred thousand miles without problem.
This is the way the factory set up the breather system, before EPA requirements made them route the breather into the intake of the engine.
Cruiser
Joined: Dec 2007
Posts: 213
Likes: 2
You may disagree, but this method is used by thousands of people without a problem. No, you do not want the opening as high as possible, you want to prevent an oil buildup in the hose.
If the hose is up high, any water that gets into the hose is going right down into the crankcase...
Nothing gets sucked into the breather hose when it is low, and no filter is needed on the end.
This setup has worked for me for several hundred thousand miles without problem.
This is the way the factory set up the breather system, before EPA requirements made them route the breather into the intake of the engine.
If the hose is up high, any water that gets into the hose is going right down into the crankcase...
Nothing gets sucked into the breather hose when it is low, and no filter is needed on the end.
This setup has worked for me for several hundred thousand miles without problem.
This is the way the factory set up the breather system, before EPA requirements made them route the breather into the intake of the engine.
Seasoned HDF Member
Joined: May 2008
Posts: 21,143
Likes: 12,707
From: South Carolina
The reason that dirt and debris does not get sucked into the breather hose is that the engine has a breather valve in the cam chest, the valve opens as the pistons move downward, allowing the pressure to escape from the crankcase, but as the pistons move back up, the valve closes, so there is no suction on the hose to draw anything in.
Stellar HDF Member
Joined: Apr 2009
Posts: 3,039
Likes: 11
From: Northern Ontario
Mines vented to a chrome breather mounted just in front of the rear floor board.
http://www.jpcycles.com/product/400-538
http://www.jpcycles.com/product/400-538
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Joined: Nov 2011
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From: FT KNOX
thank you all for the help this is what i was thinking just wanted to double check, it such a pain in the *** to keep wipe down my bike from oil
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