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I have a Husqvarna 235R trimmer. One of the fuel tubes going to the primer bulb cracked. I replaced the tube. At the same time I didn't know that the tube from the carburator to the fuel tank was cracked also. I replaced that one also. I don't know how far the tube extends into the fuel tank though. I couldn't get the bulb to prime so I switched the tube connections (the one from the carb to the bulb and the bulb to the fuel tank) to the bulb. I was able to get the bulb to prime and start the engine but the engine will not stay at idle. So I swithced them back and cannot start the engine. Which tube does the fuel filter go on the one from the carb or the one from the priming bulb.

Posted by Anonymous on

  • jasll Aug 31, 2010

    I notice no response on this request and I have also had this same problem on my Sears Weedwacker after replacing broken lines. I believe I have lines correct but primer seems to be sluggish (does not readily return to dome shape after several pumps). I replaced the plug and it fired and ran strong for several seconds and then I could not get it to fire. It's 8 years old with no maintenance so am I looking at clogged ports and a need to rebuild carb?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

trippssmengi
  • 76 Answers

SOURCE: I have a Homelite trimmer

Sometimes even if the diaphram and gaskets look ok they may not be. If the diaphram is stretched or distorted even a little they wont work properly,same for gaskets and other parts of the carb. sometimes the littlest things can make a big difference. I would try a complete rebuild kit and while everything is out of the carb. spray the carb real good and then lite-ly blow out the carb. with an air hose also if you take a twist tie from bread and take off half of the paper from the wire and carefully probe all holes in carb. that might do the trick for ya. After you put the high and low adjustment needles back in (if your zama carb. is set up with them) you'll want to set the low needle (after turning all the way in till it just bottoms) at 1 and 1/4 turns out and the high at just about 1and 1/2 turns out, then while running make final adjustments.

Posted on Jan 09, 2009

  • 38 Answers

SOURCE: Troy Built gas trimmer will not prime.ill not prime

To me it sounds like your line is clogged. It pumps towards the tank but not towards the carb. Open it up, and check your lines out, if it's clogged it could be a little too much oil (just saying if it smokes alot when it's on).

Posted on May 09, 2009

jgwhomeequip
  • 1902 Answers

SOURCE: 323L Husqvarna trimmer

This sounds like the carb needs to be adjusted like it is letting to much fuel into the cylinder. There is supposed to be fuel and air mixture in the cylinder to make it fire. If there is to much fuel what will happen is that it will just build up in there and the air wont get hot enough as it compresses to start the engine.

Posted on May 21, 2009

  • 376 Answers

SOURCE: Craftsman trimmer won't prime

A new carburetor would be simplest solution. You could try disassembling the carb, cleaning and replacing diaphrams, but just replacing the carb would be my choice. What is the model # on the trimmer and I can tell you the part # of the carb you need.

Posted on May 24, 2009

#1 Taper
  • 1040 Answers

SOURCE: Troy Bilt TB 465SS Pony 4 cycle weed trimmer won't start

Sounds like you need to take the carb. apart and clean it. I like to use a Den Tek Brush, (used for cleaning teeth), to clean the small ports in carb. they work great for this job. Make sure to either clean or replace the small screen in thcarb. as well.

Jim

Posted on May 26, 2009

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