Chainsaw Repair

I just read through this entire thread since my 8 year old lightly used Echo CS-310 looks like it's due for new fuel lines. I've always used ethanol free gas and Echo's 2 stroke oil. Even leave gas in it for a year at a time. Good to know the best fuel line to use is Echo's 90014 rubber line. Also glad down here in Louisiana I can still get ethanol free gas somewhat easily, about a 15 mile trip towards Baton Rouge..

I dont have to do anything different running the 3x5 or even the 3x6 on the newer series poulans. 

I have never ran the echo like in the CV 3400 3700 4000 to know for sure. But the later 3000 3300 etc if I recall right uses same size fuel lines and vent line. If so I have no issues using the 3x5 oem echo black line.
Hoped that helped.

I can say now been running the echo black lines in the older 3400 3700 3800 4000 for  years now. 3mm 5mm 90014

For fuel and tank vent lines. Just to update.

Got it, thanks!  Now gotta order another carb rebuild kit, who knows how much crap I sucked up using w/o a filter...freaking Ethanol...

What was this line sent for 3400?   Ya that OEM echo line is good and glad to here installed finally.

I checked a saw for local that runs crap e-gas and after 8 years it was still like new inside the tanks. That surprised me.

And for this thread, I can see by searching for LP-1300 that Tygon must either have not moved forwards on that, or, isn't making it known they have it at all.  Shame...