I need the fuel line routing diagram for a Craftsman Model No. 358.791510 Weedwacker 32cc/1.9 cu.in. 2-cycle

Curtis Sewell

• 7482 Answers
• Posted on Oct 25, 2012

SOURCE: diagram for fuel lines on 25cc homelite ut20811b gas trimmer

Hi martinez7568
I believe the picture below is what you are looking for.
Please take time to rate me
Bud

SOURCE: gas line installation on Weedwacker 18" 24cc

The hole in the tank is slightly smaller than the fuel line, else it would leak. So.. you can't push it in, you have to pull it in. I use a label tag wire (about 10" long), stick it through the hole and out the fuel cap hole. Snip the fuel line at an angle on the end, punch a hole in it then stick the wire through the line and twist it. Now you can pull the line through the hole.

SOURCE: got a homelite ut 15039a (weedwacker with blade st 185)

You have the rong fuel tank for that model.Thats the return pipe its comming from so you can drill a hole if youwant but make sure its sealed properly.

SOURCE: Homelite ST-185 (15039A). Route new fuel line.

If you look closely there should be 2 holes in the fuel tank, also if you look inside the fuel tank there should be some remaining pieces of the fuel line and a fuel filter. If this has been sitting for any length of time you will also want to replace the fuel filter.

Now comes the fun... or a challenge

To start with you will need 2 sizes of fuel line ( go to a small engine repair shop) while you are replacing things you may want to buy a new primer bulb also.

to insert the fuel lines into the tank you will have to cut a tapered tail about 2 " long so that you can grab the fuel line with a needle nose and pull them through and out of the tank so that you can trim off the tapered tails. On one install the fuel filter and stick back into the tank, on the other trim the tapered tail off and pull the line back into the tank but leave about 1" sticking through the tank.

Now hook up you fuel lines to the carb and/ or primer bulb

Fill tank half full with fuel ... now test the installation if it doesn't pump fuel but instead you can hear it blow bubbles in the tank it is simple just reverse your lines on the carb / primer bulb

Retest if it works like it should you are ready to attempt to start it... good luck

SOURCE: how to replace fuel lines on homelite ut20811b gas trimmer

If there are two different size lines in the tank the smaller one is the main fuel line. The main fuel line will have the filter on the end of it in the tank and the filter should lay flat on the bottom of the tank. The main line will go directly to the carb on the fuel pump side. It is very difficult to describe and I dont have a way of giving a picture. If you have had the carb opened up the fuel pump side is the side that is mostly flat with holes and the dighram with the flaps.
The other nipple; usually more toward the center of the carb body, will go to the primer bulb. The primer bulb will have 2 different length nipples. The longer one is out to the tank, the shorter one is in from the carb. There is no need to have more than a half inch of line from the primer into the tank. when hooked up properly; as you press and release the primer bulb it will draw fuel up the main fuel line into the carb and fill the carb with fuel then from the carb to the primer bulb and fill the primer bulb with fuel then the excess fuel will be returned to the tank from the primer bulb.