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What is correct way to hook up gas lines from carb. through primer on a troybuilt T90bc trimmer.

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Posted on Jan 02, 2017

#1 Taper
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SOURCE: Two ports on Walbro carb - which line hooks to which?

The longest, and sometimes smaller in diameter of the two fuel lines, goes from the carburetor to the bottom of the tank. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank.

The other fuel line goes from the primer bulb to just inside the tank, (about an inch). make sure that you get the right size fuel lines. The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank.

(HINT): When feeding the lines through the tank holes, cut the lines at an angle. They will feed much easier into the holes. You can than cut them off square, once you know that you have enough to work with

Let me know if you need further assistance.

Jim

Posted on Jun 20, 2009

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Have a craftsman 32cc craftsman model #358791060 I have changed gas lines and is hooked up properly but when I prime the bulb the gas pours out of the carb. Any suggestions as to how to fix this?


Although you think you go it connect correctly, it sounds like you got the primer connected backwards.

Here is the basic layout for a remote primer system.


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Apr 17, 2015 | Craftsman Garden

1 Answer

I changed the primer bulb and now it's not getting


sounds like you hooked the lines up backwards, when you press the primer it is supposed to squirt gas into the tank on the return line cause what it does is draw fuel through the carb and back to the tank....filter line from tank goes to fuel pump side of carb and return line on carb goes to primer bulb then opposite line on bulb to tank...... so when you press bulb it draws fuel through filter in tank through carb and back to tank ! good luck! 2StrokeJim

Jun 17, 2011 | Homelite Garden

1 Answer

My Craftsman 17cc gas weed trimmer wouldn't start.


Hi There, Check the primer bulb for tare or pin holes. Replace it. Check and clean carb jet it maybe plugged with debree. Also check for spark which you didn't say. Replace with correct plug.
Note; Do not use strong cleaners on rubber seals (O rings and gaskets) They dry up and crack.
If needed use a dabble of grease on seals

Jun 13, 2011 | Craftsman Garden

1 Answer

How to hook up fuel lines


Fule line comes from tank to primer, primer then goes to carb and carb back to tank

May 04, 2011 | Husqvarna 28cc Gas Line Trimmer

1 Answer

Which fuel line "port/inlet" on the Walbro wt-380 goes to the fuel tank? It's on a Craftsman 25cc Gas "Weed Wacker" Line Trimmer purchased in 2002. It has Walbro WT-380 carburetor with external primer...


Usually the line with the filter on it that comes from the tank goes to carb. inlet first which is most likely close to the bottom side of the carb.nearest to the engine,then the outlet or return line on the carb.goes to the inlet side of the primer and the outlet side of the primer goes back to the tank. The primer draws fuel through the carb to the primer to the tank if its not? then correct the line connections until it does

Jun 25, 2010 | Craftsman 25cc Gas Line Trimmer

2 Answers

I need to know how the fuel lines are hooked up in my ryobi gas trimmer. All of the fuel lines rotted out. I took them out and I need to know the correct connection sequences (what goes where).


line runs from little filter in tank to carb.
line from carb. to primer bulb
line from primre bulb back to gas tank.
lines are 2 sizes
need to cut at angle end of lines in tank so you can get them thru holes
and grab with needle nose plyers and pull them thru.
make sure you put the little filter on end before you pull line thru and leave
enough so filter can move around the whole tank.
second line in tank is smaller and need to cut and pull it thru hole in tank to primer bulb

Jun 23, 2010 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

2 Answers

Weedeater, 18cc, replaced fuel line & purge button, the purge button will draw fuel into the fuel line but the purge button will remain colapsed.


You may have accidently hooked the lines to the purge button wrong. The purge button (primer button) should have a short stem and a long stem. The short stem is the suction side of the primer button and should be hooked up to the return on the carburetor. You actually s*uck gas through the carb and not from the tank. The carb should have two hook ups. If you hook the fuel line up to one of the lines on the carb and the button is hard to push and doesn't return to normal, hook the line up to the other one. When you push the primer button gas should be pulled through the carb. The other line on the carb goes back to the fuel tank.80a09a6.jpg

Apr 18, 2010 | Poulan 25cc 2-Cycle Gas Powered String...

2 Answers

String trimmer, fuel lines disintegrated, I need routing.


The Walbro has two connections on it for the fuel line. My Walbro has one connection on the side of the idle screw and main fuel adjusting screw. This connection hooks up to the suction side of the primer bulb. Usually the shorter stem. (You actually **** fuel through the carb instead of pushing it through.) On the other side of the carb is the other hook up. It draws fuel from the tank. This line will connect to the side of the tank that has the filter. The other side of the tank is your return and it hooks to the other connection on the primer bulb. Usually the longer stem.

Apr 17, 2010 | Poulan 25cc 2-Cycle Gas Powered String...

1 Answer

Primer Ball Sticking


Your carburetor needs cleaned. Disassemble the carb. and spray with carb. cleaner. Use a Den Tek Brush,(http://www.dentek.com/shop.php?target=products&product_id=7), to clean the small portals in the carb. Make sure that the small screen in the carb. is free of debris. Test the primer bulb after you get the carb reassebled and before you put it back on the trimmer. This will keep you from doing extra work.
If you need further assistance, just let me know.

Jim

Jun 07, 2009 | Troy Bilt Tb70ss Gas Trimmer

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