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What is the hose coming for the top of my tank?

Where does this hose go or is it just a air filter ? Help plz

  • Is it air hose

    Votes: 3 100.0%

  • Drain hose does it plug in ?

    Votes: 1 33.3%
  • Total voters
    3
S

Steve630sms

Husqvarna
I bought a 2011 husqvarna sms630 I removed the tank to install a jd jetting programmer when I put the tank back on I didn't notice where the hose that has a clamp at the top of my tank in the front with like a filter on it and then a piece of hose comes out of it sounds like its sucking am I sapose to have this hooked in Sum where Sumone pls help.
 

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I will move this over to 610/630 where you will get better responses.

General (Main) -> 610/630
 
It is a breather pipe.
As you burn fuel, the tank needs to breathe in to replace the lost volume of fuel, otherwise it would be a vacuum.
As the hot motor (and sun) can cause the fuely air in the tank to expand, it sometimes need to breathe out as well.
The little blobby thing is a filter (to stop dust) and a one-way valve (to stop fuel flowing out).

There is probably a right place to put it, but anywhere downhill, away from ignition sources will do.
 
Sizzler is rite its a one way vent hose w/check valve don't plug it off,,your bike will run like crap if you do...
 
organ donor said:
... so the locking lid is then redundant?
Click to expand...

No, the screw cap setup completely replaces the locking lid setup.

Pull your locking cap off and look at the screws holding the cap base to the tank. If you pull that whole thing out, you can replace it with the billet setup.
 
Gottit now! But what´s the advantage? You can get rid of the overflow gubbins but risk breaking off the stub. Can´t see there´s much advantage.
 
* it looks better
* it eliminates the need for a second key
* when you fall over or carry the bike in your truck or trailer, there is no leaking of gas from the overflow vent
* there is no dirt coming in the tank
* and it just looks so much better :cool:

when you ride a lot of dirt, there are some nice advantages, but otherwise...
 
I think it would be hard to break the vent on it. And I agree, it looks much better! Mine also leaked when on its side, but this cap is air tight!
 
Since the US bikes come with a fuel vapor cannister most of us take them off. That's where the tank vent went. So mine got routed down the stemhead. If the tank is completely filled and then ride very rough terrain I get some fuel slosh down the back of the front fender. Oh well.

There is another hole in the tank just down from the vent nipple, it's for draining the filler well. Not sure why they capped it off on the TE, but I removed the cap so any water can drain. It's been fine for 5K miles now. ;)
 
CJBROWN said:
Since the US bikes come with a fuel vapor cannister most of us take them off. That's where the tank vent went. So mine got routed down the stemhead. If the tank is completely filled and then ride very rough terrain I get some fuel slosh down the back of the front fender. Oh well.

There is another hole in the tank just down from the vent nipple, it's for draining the filler well. Not sure why they capped it off on the TE, but I removed the cap so any water can drain. It's been fine for 5K miles now. ;)
Click to expand...


I wouldn't vent down the neck on the 630, the neck tube has a slot and fuel vapors can reach the bearings and break down the grease. I greased up my bearings and put a rubber plug in both ends of the neck tube to keep grit and water out.

I run my vent hose through that neat little track on the front of the neck, around, and down the frame under the motor.
 
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