Question about Homelite Mighty Lite Lawn Trimmer

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Homelite sx135 trimer sputters , but wont stay running. when you pump up the priming bulb , a little fuel leaks out on top of fuel tank where the fuel lines enter through the gromit ! lose of prime

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  • Homelite Master
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It maybe sounds like you need to replace the fuel lines with some of the new "Tygon" lines which are more ethanol resistant. Check in the fuel tank for the condition of the fuel filter and fuel line that hook onto itl
Cracked and/or old deterioted fuel lines will leak air, causing loss of prime. Sometimes as they deteriorate, remnants of them end up in the fine mesh fuel strainer screen on the fuel pump side of the carb, restricting fuel flow inside the carb and causing your problem. Take off the cover to the carb that doesn't have the vent-hole in it's top. That is the fuel pump side...look at the carb body under the fuel pump diaghram and you will see the round fine-mesh fuel strainer; It is press into place in the carb body but can be removed with a fine, sharp object. Check there and maybe go to the small engine parts shop and ask for about a foot of each of the 2 diameter fuel lines you will be replacing.
A carburetor diaghram kit or rebuild kit may be needed also and there are many for sale on Ebay....you need to know your carb model though.

Posted on Jul 10, 2010

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Posted on Jan 02, 2017

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My prime bulb looses pressure and first start is hard. I have to remove fuel line from filter and cover with thumb prime re install then first start takes time.


Does the engine run fine after it starts? Most common problem with primer bulb losing prime is an air leak in the fuel line or primer bulb. Air leaks don't always leak fuel. If there is an air leak between the primer bulb and gas tank there is no pressure, only vacuum. If it is not a major leak it might not leak without pressure but it will allow air to enter the fuel line. If it is a very minor air leak it could allow air to replace the liquid in the fuel line over time, but so little air once it is primer again that the fuel pump can over come it with volume of fuel.

Primer bulbs do not stay firm, as they are when initially pumped up, after the engine is running. There are check valves in the primer bulb that hold pressure in the primer bulb and throughout the fuel line to the engine. Once the engine starts the fuel pump creates vacuum drawing fuel into the engine diminishing this pressure and releasing the check valves. At this point the primer bulb is just another segment of fuel hose allowing fuel to pass through it as the fuel pump demands. The primer bulb functions much better when the outlet side is higher than the inlet side. This position makes it easier for the check valves in the primer bulb to seat and release as needed. If the primer bulb is functioning properly and is positioned with the outlet side higher than the inlet it should not be necessary to cover the end of the fuel hose with your thumb to get it to prime.

If the engine is hard to start after being fully primed there could be a problem with the fuel system on the engine. Some engines are hard to prime once air has entered the system, especially fuel injected models.

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1 Answer

Wont prime up


I have seen a couple of different things cause this... Are the fuel lines hooked up and not split and fuel filter routed right in tank.(hanging freely touching bottom of tank lying flat) next if your carb has adj. screws H &L I have seen when the H is cranked snug (lean) that primer won't work right. Last but not least your Needle inlet valve is stuck shut and or the fuel pump diaphram little tabs are not sealing off chambers in carb on fuel pump side. make sure your fuel lines are properly hooked up to the right spots. when you push primer bulb it should squirt gas into the fuel tank, then when you release it ,it should draw fuel from the tank through the filter and thru the carb and then out to tank.

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1 Answer

Primer bulb wont prime


Most likely cause for this is fuel lines connected wrong or an air leak in one of them. Another scenario is the fuel line decayed inside the fuel tank (check it) and the filter fell off and now the line comes up out of the fuel on occasion. A clogged filter screen in the carburetor under the fuel pump cover causes this too. So...start at the fuel tank...check for cracks in the fuel lines (and in the PRIMER BULB) too, because air is unwanted in the system, but a little is always there.

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1 Answer

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fuel issue, look for cracks or holes in the two lines from tank to prime bulb, check prime bulb, adjust/clean carburetor, may also need to check filter inside tank it is connected to the bigger of the two hoses. Tim

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2 Answers

My chain saw 14" homelite


primers pull fuel from the carb and dumps it back into the tank, so if the bulb will not prime the chances are the fuel filter in the tank is blocked, pull the fuel hose through the filer hole and replace the filter on the end.

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1 Answer

HOMELITE EXPAND IT 26VT WON'T RUN


Well if you are missing parts?...No. How could anyone from where we sit. But the fact that it starts with starting fluid is a great sign however. First off, Fresh gas/oil mix is A MUST! No getting around that. OK first, when you pull the throttle (Give 'er gas) does the little lever at the carburetor move back and forth at all? if yes, then what happens when you hit the primer bulb? Does it push/**** fuel from the tank? (My homelite spits fuel out to the ground when I prime the bulb, most spit it back to the fuel tank however) See if priming it moves fuel. You should see a trail of bubbles in the fuel tubing. You have to see if you are getting fuel at all first. Then does it maintain the prime? If not? Then the primer bulb will usually remain empty. A good prime should always show a half full or 100% full bulb at all times. Let me know what we got so far.

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1 Answer

PRIMER BULB WONT PRIME


I would recheck the carburetor to make sure you put the diaphragms next to the carburetor and not the gaskets.
Please if it is not priming you may have the fuel lines hooked up wrong. Also check the fuel cap to make sure the vent assembly is there. If the tank is not venting, the tank will get a vacuum in it not allowing fuel to flow.
HTH
Good Day.

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1 Answer

Home lite 20002a won't stay running


when you use the primer bulb does it pull fuel out of the tank and fill the carb and any extra returns to the tank ? I am sure this is the case since you can get it to start and then it runs out of fuel. It sounds like you may have a dirty filter in the tank or the diaphrams in the carb are stretched from age or dried out from sitting either way the first thing I would check / replace is the fuel filter and if this doesnot correct the problem i would then rebuild the carb. Good Luck i hope this helps you out

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1 Answer

Need to replace the gasoline pickup tube on a Homelite SX135.


The typical fuel line routing is:

One line (the one with the fuel filter in the end of it) comes out of the fuel tank and goes to the bottom fitting on the carburator. The second line comes out of the tank and goes to the bottom fitting on the primer bulb. The third section of fuel line goes from the top fitting on primer bulb to top fitting on carburator. Hope this helped and best wishes.

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the filter in the gas tank that line goes to carb
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