Replacing fuel line in gas tanks

Stump Shot · Jan 5, 2019

AVB said:
Hmmm Stump Shot, I didn't know 15 min or less was much of wrestle. Takes me longer to do the paperwork and talk with the customer. I do about 95% with the tag wire trick. Of course there are those problem versions of fuel line mounts where you got get a grommet in place or those with a two piece line setup where you attach the line to a fitting inside the tank but I don't see many of those here. I use those hook tools only to get the fuel filter out so I can check it.

The method I use only requires a precut fuel line with a little extra for the taper. Pulling the line through is easier than pushing as the line stretches so it become smaller in diameter temporarily less you over stretch it.

That tool on the top of the picture there can change out a fuel line in a matter of seconds.

AVB · Jan 5, 2019

I would like to see how it gets the fiction held fuel lines through those plastic fuel tank holes. I am always interested in better way, maybe I just don't see how it works. And for being that quick I allowing for time to get the fuel lines, my line cutter, and for getting to the tank. I have yet to be handed a trimmer and in less than a minute have the lines changed and back in the customers hands. Maybe I am just that slow at 60. Besides many times there more wrong than just fuel lines.

There are times that I must half disassemble some handheld blowers to even access the fuel line routing but string trimmers tanks are fairly accessible. Even chainsaws can be a pain at times like the Poulan S25D and the micro version.

Keith Littlepage · Jan 6, 2019

Yeah AVB; I would like to see a video of that tool in motion. I can't understand how it to can be that simple. I'm not disputing stump man's word but I'd like to see how it's done to be that simple.

Stump Shot · Jan 6, 2019

All it requires is to cut off and split the end if the hose being installed place it between the two wires and pull through the hole nip off the end square again and done. I'll try and mock up a picture today for ya's.

AVB · Jan 6, 2019

The I believe I will pass on trying that on the blind hole pulls I do now where there is nearly no way to get anything in there that is stiff to pull fuel line out or in to tank. I just stick with my tag wire pulling method as it has serve me well the last 9 yrs.

Keith Littlepage · Jan 6, 2019

Waiting to see stump man's mock up picture today. Just can't see it in my mind how it's going to work.

Stump Shot · Jan 6, 2019

Made this out of an old choke or throttle cable and an old pull start handle.

huskihl · Jan 6, 2019

Stump Shot said:
Made this out of an old choke or throttle cable and an old pull start handle.

View attachment 158251 View attachment 158253

That looks way too easy for anyone to actually believe it'll work. Lol

AVB · Jan 6, 2019

Now that's why I didn't think it would work for my needs. Those are Nitrile rubber lines plus they are larger than what I normally deal with in the Tygon lines. I deal with 3.2mm and 3.5mm OD along with the 4.8 mm OD lines. By the time I double a 1.34mm throttle wire I am already maxed out on the friction fit diameter on the two small lines plus the lines flatten are 1.6mm, 1.52mm, and 2.4mm. Plus as I said it way too stiff to replace those lines that you must curve back behind the filler hole to feed through.

Now for the application shown it works fine as the Husqvarna curly line is a thin wall line and you got a fair straight shot at through hole and if the line doesn't slip out of the pinch area.

Keith Littlepage · Jan 6, 2019

I'm not seeing a good picture on how it is hooked up to the fuel line and a good picture of where it's actually coming out the fuel tank hole.

huskyboy · Jan 6, 2019

On some saws (not all) it is actually easier to just remove the tank for better access to replace the lines or tank vent. Stick with oem parts if possible. The echo 5 and 6mm fuel line works good for impulse or fuel line. The oem curly line for husky saws already comes cut at the right length and also the right angle at the ends to be pulled through. Straight line can be used in a husky but you have to take care in how long you leave it between the carb base/tank as it kinks easier. If left too long in the tank it won’t move with the gas like the oem curly line either.

CR888 · Jan 6, 2019

The key to what stumpshot is doing is cutting the line on an angle prior to fitting the wire through it. That means he ain't pulling the whole line thickness + the wire thickness through the tank line hole. Look closely at the pics, if you can fit the wire in the hole the line & wire will work provided you cut the line end on an angle first. If what he's shown you don't understand or is of no help, well...

CR888 · Jan 6, 2019

Once you make a line pointy its easy to get it too start coming through a hole. Once some is through its easy to get the whole line to come. Cutting the line tapers it so it acts like a needle & thread. I buy tygon line by the roll in various sizes so its fine to cut some off here & there. Once line is in position (through hole) you can trim the point off so its flush and ready for a filter to be fitted or put on to carb elbow. Once you find a technique that works fuel line jobs are short work.

Lone Wolf · Jan 6, 2019

huskihl said:
On a saw that uses regular fuel line, I cut the end on a 1/2" taper. Push the pointed end through the hole and pull it through with forceps. On a stihl, smear some grease on the line by the grommet, push it down through the hole, pull it down with forceps through the fill hole while helping the grommet with a small screwdriver

Yup!

Bilge Rat · Jan 9, 2019

The curved forceps about 14" long work well.

AVB · Jan 10, 2019

CR888 said:
Once you make a line pointy its easy to get it too start coming through a hole. Once some is through its easy to get the whole line to come. Cutting the line tapers it so it acts like a needle & thread. I buy tygon line by the roll in various sizes so its fine to cut some off here & there. Once line is in position (through hole) you can trim the point off so its flush and ready for a filter to be fitted or put on to carb elbow. Once you find a technique that works fuel line jobs are short work.

Agree here as every application has its own technique that works best. No one technique works on all equipment. What I use works best for my needs but I am always find I need to modify the way I get things done at times. It best not get stuck doing things one way as it will not work all the time as manufactures will throw us curve balls at times.

Replacing fuel line in gas tanks

Stump Shot

Disciple of Monkey's

AVB

Super OPE Member

Keith Littlepage

Active OPE Member

Stump Shot

Disciple of Monkey's

AVB

Super OPE Member

Keith Littlepage

Active OPE Member

Stump Shot

Disciple of Monkey's

huskihl

Muh fingers look really big

AVB

Super OPE Member

Keith Littlepage

Active OPE Member

huskyboy

Sorta a husqvarna guy...

CR888

Here For The Long Haul!

CR888

Here For The Long Haul!

Lone Wolf

Pinnacle OPE Member

Bilge Rat

Here For The Long Haul!

AVB

Super OPE Member

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