story and a problem

[oldyam80sg]

OK so based on above pic-if line #21 was clogged solid would this be an issue?

[bikerphil]

OK so based on above pic-if line #21 was clogged solid would this be an issue?

Yes it would, but if you put the selector to prime it will bypass that line.

[oldyam80sg]

Well looking at the diagram you posted i have some lines messed up.The line that came off was connected to #2 on the octopus and the looking at the bike it came off the front of the petcock not the back.

[bikerphil]

Well looking at the diagram you posted i have some lines messed up.The line that came off was connected to #2 on the octopus and the looking at the bike it came off the front of the petcock not the back.

If they are full of crud, I'd take the time to clean the lines out and the petcocks, etc, be a shame to fill up your nice clean carbs with all that crap, then put 'em back correctly.

[oldyam80sg]

That line was full of crud and will remove the other line tomorrow.Just got some new Tygon.I already took and cleaned the octy and the petcocks flow nicely.I didn't have a lot of crap in the carbs as i run 2 fuel filters.

[Shacknasty]

Now yer gettin' somewhere. Hope ya have a good runnin' XS real soon.

[oldyam80sg]

I hope so! That gives me an excuse to take off from work!I haven't had a sick day off since August 2012.

[oldyam80sg]

OK hit and miss today.The tygon i ordered is pretty thick and no matter what would not go on.I went to Advanced Auto and got 1/4' ID black fuel line and used a fuel filter in the meantime.The carbs now are getting plenty of fuel, but found out when i cleaned the carbs on Sunday,the float valve rubber tip came off causing an obstruction and fuel would not flow into the screen.I found that this afternoon.I put on a used float valve that didn't look to bad.Still got to order new float valves as i think they are slightly leaking.I didn't do a sync yet that's why i think it is running bad.And also the bike started up fine this afternoon and before i left the battery died.Checked all my connectors will take a volt reading tomorrow.

[Schming]

I'm going to replace my Tygon yellow fuel line as I'm finding out Tygon hardens up after a while.

Hi oldyam80sg, glad to see ya makin' some progress on your bike.

How long did the Tygon fuel line stay flexible ?

Is it any better than the line ya just got from the parts store ?

[oldyam80sg]

I bought Tygon line from Pingel i believe and it was good-went on easy didn't come off and lasted so far(2 years).I got line also from Dennis Kirk-Motion Pro line and it internally collapsed.The line i got most recently had a thick inner wall and wont go on the octy let alone the petcock.

[Shacknasty]

I bought fuel line at the auto parts store and it was too thick of an OD to fit the octy so I just shaved the outside a lil' with a razor blade. Easy-peasy...

[oldyam80sg]

The black fuel line sold at a lot of auto part stores will break down and clog lines.Good for cars bad for bikes I'm told.Just ordered 20' of fuel line from e-bay.

[Schming]

Does anyone know all the inside diameters of the fuel, vacuum, and over flow lines on the '80G and '79SF ?
Also is the vacuum line anything special to keep from collapsing under pressure or will Tygon work ?

I ask this in preparation to purchase a bulk supply of Tygon tubing for all my bikes from this supplier:

http://emurdock.com/tygon-small-engine-fuel-line.aspx

Also I am curious of Tygon's shelf life as I have to store it for a few years.

TIA

[bikerphil]

Ihe 1/4" ID should be fine for fuel line. IIRC, the correct size is 5.5 or 6MM ID which is in between 3/16" and 1/4". The 3/16" will be too tight. Not sure of the vacuum line size, maybe 1/8"

[Schming]

Thanxs Phil, I'll do some more diggin' and post my results.