Question about Troy-Bilt 4-Cycle Curve Shaft Gas String Trimmer #41ADT41C966

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Have to start on starting fluid, won't stay running. have replaced gas line and filter and primer bulb. What next?

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If you use starting fluid and it starts this tells you not get gas.
rebuild carb and clean real good and blow air threw carb real good.
this should fix problem.but let me know.ok

Posted on Jul 25, 2009

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You will have to pull your head to see if the valves are seating. If the exhaust valve is not seating it will send blow back through the carb.

Posted on Jul 23, 2009

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1 Answer

Weedwacker has fire to the sparkplug and new gas to the primer bulb but will not start


sad these little gas engines always fail when we don't want them to . requires a lot of compression to run and if not properly oiled thru the gas will fail .

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Flush old gas. Clean or replace spark plug. Check float on carb, clean carb bowl if equipped.

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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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I have a Craftsman Weedwacker 25cc 358.791030 that won't start. Primer bulb is not getting gas. Gas line is connected to the filter resting at the bottom of the gas tank. The line for the primer bulb...


that line should be longer, it contains the filter which is the pick up, and should rest inside the tank fully,, see if its possible to pull that line farther into the tank, its not going to start until the primer bulb fills

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Won't start , can not get primer to work even after replacing primer bulb.


If your fuel filter is clean, and none of the fuel lines are pinched, then you probably need to replace the diaphragms, gaskets, and screen in the carb. Some carbs with the primer bulbs mounted on the carb have a check valve in the primer system. This is the least likely problem, but it is possible that the check valve is defective.

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1 Answer

My Ryobi start great but when I change it from start to run stays few seconds and died


  • Alow the engine to run for longer on the start setting before you switch to run
  • Ensure air filter is clean. Foam elements can be washed with hot water and detergent. Paper elements can be cleaned with compressed air blown from the inside of the filter but ideally should be replaced.
  • Check fuel lines aren't kinked or blocked restricting fuel flow.
  • Ensure fuel filter isn't dirty. This is probably located at the end of the fuel line in the tank.
  • The fuel lines may have become airlocked.This can happen if the tank is run dry. If the trimmer has a primer bulb, alternatively press it several times and then try to pull start the engine with choke on. Repeat this several times. The primer bulb should feel spongy and fill with fuel.Once the engine kicks, switch to run.

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Will not start. Primer bulb does stays pushed in.


that happens frequently on older equipment ... the alcohol in modern gas can damage the fuel lines and primer bulbs if used in tools not designed for it .. even replacing the damaged parts doesnt help .. since the replacement parts are often made of the same stuff as the original .. you have to make sure the parts can handle alcohol ... i dont take anyones word for it .. i soak them for a few days .. if they swell up or turn white .. then those are not compatable .. if you cant find alcohol resistant parts then you can still get gas that doesnt have any if you ask around .. ... if your tool is a more recent vintage then it should already be compatable .. maybe you have a clogged passageway in the carb or the primer bulb my just be aged .. if you cant get the primer bulb to work then you can try spraying a little starting fluid on the air intake (air filter) .. that should get you started to see if anything else is wrong .. if the primer bulb is damaged then chances are the plastic fuel line is also .. primer bulbs and other parts are usually available from the manufacturer and from parts supply stores ..

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1 Answer

When I try to use the primer bulb there is no air


check your filter and lines. one may be broken, also your primer may be bad replace it and any bad lines you find

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The primer bulb does not draw fuel thru carb


you need to buy a primer bulb kit and replace it cost about $8.00 and is easy to put in, the check valve is damaged.

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2 Answers

Leaf blower will not continue running unless primer bulb is pushed intermittently


Hi

Priming the engine(put some gas in the sparkplug hole)..If.Start the engine.If only the gas from the cilinder is burned change the lines prom primer bulb.

best regards savumihai71

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