What size of tubing for fuel lines - Troy Bilt Tb425cs 26cc 4 - Cycle Curved - Shaft Gas Trimmer with Ez - Start and Speed Spool

yes it has and size is like 3/16 outside 1/8 inside

roughly lol

there are only a couple of sizes of fuel line. take your old one off and take it to a small engine repair shop or a car parts store. they will cut you a piece of their fuel line the same size and save you a boot load of money. but do make sure you get fuel line, not just any tubing.

The brake tubing is 3/16" 98% of the time

The fuel return or evap vent tubing etc is usually 5/16"

The main fuel tubing is as you said 3/8" most of the time

I am just speaking in general about most vheicles

I have micrometers,calipers etc, so I measure things

What are you replacing on a car that while 10 years
old,should not need fuel tubing replaced,assuming
it is rusted and your fabricating from scratch?

no,just buy the line at any auto parts store,just measure how long you will need and what size.











TIM.........

Sears has ample parts for repair.

Things to know first: It's about the size of a soup can, has three fuel lines running into it that have quick-disconnect fittings. This means you have to buy a very cheap, plastic tool to disconnect the lines. Tell the parts store you need the quick-disconnect tool that matches your tubing size on the filter: I found an assortment in a package for about $5. Now, jack up the passenger-side of the car. Crawl under below the post that divides passenger front door from back door, and look up. You're looking for a cylinder mounted front-to-back, just inside the edge of the frame. If I remember correctly, you have one tube running into the back (from fuel tank), and two leading out from the front. A one-bolt clamp holds it in place. I found it easier to take the clamp loose work on it. The plastic tool is sort of T-shaped, with the bottom of the T formed by a split tube that connects to a flat disk that is also split. The idea is to hold the tool with the flat disk end toward the filter, and spread the split over the tube: it will slide over the tube end enclose it. You now have a filter at one end, a quick disconnect at the end of your fuel line where it attaches to your filter (metal tubing end of filter), and your tool slipped over the metal tubing between filter and disconnect. Shove the disconnect tool toward the fuel line...it should be possible to force it into the end of the quick disconnect and release it, allowing you to shove the fuel line off. You'll get a bit of gasoline-cologne out of this, but it shouldn't leak much---it's supposed to seal. Now, do the same thing to the remaining two tubes, and your old fuel filter should be completely disconnected. Bolt the new one into the clamp and onto the car....push the three fuel lines back onto the filter, and it's time to crawl back out----you're done. Jack the car back down and grin proudly.

There ARE two holes in the tank. One samll and another larger. One is on the left side and the other is on the right. Look carefully and you'll find them. As far as connections of the fuel lines:

The line from the fuel filter in the tank goes directly through the small hole in the tank to the top nipple on the carb thus giving the carb a constant supply of fuel when running. The primer bulb is used only for "priming" and does not play a part in the fuel flow after that function. The bottom nipple on then carb then goes back to the nipple on the primer bulb which is clearly marked "Carb". The above connections are made with the smaller diameter tubing. From the primer bulb, marked "Tank", the larger diameter tubing is routed to the large hole in the tank. The tubing goes into the tank only 1/2 to 3/4 inch. As far as getting the tubing through the holes in the tank, cutting the tubing at a slant. But no matter what you do it is still a witch. Be patient, use some Vaseline and avoid the temptation to get out the drill and **** the hole to a larger size.

find out what size the fuel line is then purchase two union fittings for that size, aquire a tubing flare tool in order to flare the ends of the 1 ft. length of tubing you will need to buy for the repair,cut out the damaged length with a tubing cutter making sure you have a clean oil drain pan handy because the gas may continue to flow from tank after the breach of the line,make sure there is an almost empty tank before attempting this job if possible, then take the nut and slide it over the cars cut fuel line that is to be repaired then choose the appropriate hole size on the flaring tool clamp it over the fuel line with about an 1/8 of an inch sticking out, then apply the flare making certain the nut is slid over the fuel line before flaring and it is facing the correct direction, after flaring remove the flaring tool and repeat as neccessary on the replacement section of tubing and on the other side of the fuel line to be repaired tighten up unions with two line wrenches at the same time and check for leaks.

No biggy, you need to buy the same size fuel line tubing, preferably from the dealer, and replace it by undoing the tubing fasteners, little clips you undo with a pair of pliers. Before doing this, make sure you cut off the fuel line valve which should be right under the gas tank, if none, empty the gas tank in a seperate container. Good luck.

I recommend remove all fuel from the tank. Remove the hose from tank to carb. take the tube with you, when getting new hose.