Leaking fuel tank vent 365 special

[AJStrees]

I have replaced the fuel line on my 365 special as it started going a bit brittle and when I fill the tank fuel drips out of the machine. Doesn't happen while using the saw only when fueling and on its side.  

 

Seems to me the fuel tank vent is dodgy. What's the best way to take out the old vent to be able to replace it? 

 

Cheers. 

[spudulike]

I guess my first question is ....where did the fuel line come from and is it OEM Husqvarna? If not, was it a tight fit when you pulled it through? It is possible if the new fuel line was under-size, the fuel may be leaking around it.

 

If that is all fine, the tank vent is a two part affair, one part is a push in plastic pipe that never seems to leak and then there is a push in vent that connects to a pipe that breathes in to the carb air box.

 

The usual method is to take out the rear AV mount screws and AV limiter screws, wedge a piece of wood between the tank and lower air box and then either fit a new push in vent or use a little sealant such as super glue or seal-all around the union....make sure you use the sealant only around the joint so it doesn't block the vent.

[AJStrees]

23 hours ago, spudulike said:

I guess my first question is ....where did the fuel line come from and is it OEM Husqvarna? If not, was it a tight fit when you pulled it through? It is possible if the new fuel line was under-size, the fuel may be leaking around it.

 

If that is all fine, the tank vent is a two part affair, one part is a push in plastic pipe that never seems to leak and then there is a push in vent that connects to a pipe that breathes in to the carb air box.

 

The usual method is to take out the rear AV mount screws and AV limiter screws, wedge a piece of wood between the tank and lower air box and then either fit a new push in vent or use a little sealant such as super glue or seal-all around the union....make sure you use the sealant only around the joint so it doesn't block the vent.

Thanks Spud. for some reason I did not see your answer till now. 

 

The fuel was leaking before I changed the fuel line. I put in new fuel line which was a tight fit. Not OEM as I didn't have any on me, I wanted to see if changing the line would make any difference to it leaking but it is still leaking. 

 

That's when I checked online to find out about the vent. It seems the push in vent may not actually be in place. I only see the plastic pipe and no end on it. I need to investigate more to see if that is the case. But now that you mention the 2 parts, it may be that the end of the vent is not in there. 

 

Ok will check it out and post a pic based on your diagnosis. Cheers again. 👍

[adw]

Pretty sure on that vintage of saw there was just the plastic tube pushed in and a aspirin shaped white pellet pressed in (  Vion ) the addition cap and hose was a later fitment.

[spudulike]

I did check the IPL and it had the plastic tube, the insert plus the angled union and nitrile pipe. I guess you guys changed the design from one to the other type during the life cycle. 

The OP just needs to check what is fitted.

The "white pellet" type seem to only get blocked but don't tend to leak in my experience.