25cc Gas Line Trimmer

Experienced gardeners share their insights in answering this question :
You would definitely want a fuel filter on or you’re just asking for trouble and headachs down the road when carb gets full of dirt

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If you put straight gas in the tank, you may get to burn half of it, or you may just get to start the engine. With no oil mix in the fuel it will take oil from the base. In no time at all that oil will be depleted, and your bearings, and rings will starve for oil.
A fuel filter prevents debris from entering your vehicle`s engine, and changing or cleaning it regularly is essential. If your filter is nylon or paper, you should just replace it with a new one. If it`s made of metal and isn`t too grimy, you can clean and reuse it.
In general, the fuel filter is difficult to open, but it can still be cleaned to remove various dirt that has settled. If the dirt accumulated is too bad, you should replace a new air filter because the dirt that has settled for too long will be tough to clean and usually takes a long time.
DIY Frequently Asked Questions / What will happen if you put straight gas in a 2-cycle engine? Without any oil in the fuel for lubricating, the engine will seize up and will probably be ruined. Always remember to use the oil/gas mixture in the proper ratio recommended by the mower manufacturer.
Running a 2-cycle with the wrong fuel to oil mixture can cause severe damage to your engine. Running the machine without any oil mixed in the fuel can cause severe damage to your equipment within just minutes. This damage is generally very costly to repair and is usually irreparable.
Two-stroke (or 2-cycle) engines require a mixture of fuel and oil be added to the fuel tank. This mixture results in both engine combustion and lubrication. Operating a 2-Stroke engine on gasoline alone will result in engine failure.
Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil. Unsure of the age of your equipment? Use the 40:1 mixture.
All Weed Eater brand two-cycle gas trimmers use a 40:1 ratio of gas to oil. That`s equal to 3.2 ounces of oil to 1 gallon of regular gas. The gas should be 87 octane with no more than 10 percent alcohol. The oil must be formulated for two-cycle engines.
What is the Difference? Lawn edgers are designed to cut edges and create boundary lines, whereas a string trimmer is designed to maintain those boundary lines. They make a great team! Both can help your lawn to look sharper.
Power and emissions

Most trimmers use two stroke engines and require gasoline mixed with oil. Due to pollution laws four stroke engines are becoming more popular, particularly in the commercial market. Manufacturers include Honda, MTD and Craftsman.

Clean all filters by washing them with fresh petrol. Wipe out the inside of the pump with a clean lint-free rag. Make sure sealing gaskets are sound. Replace them if necessary.

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I have a Echo leaf blower and I can get it running but then it’s cuts off after just a few seconds. It has new plug, air filter and fuel filter. What else could it be?
ANSWER : The carburetor could be dirty and need a good cleaning and you could first remove the fuel pump cover (cover without the vent hole) to the carburetor and look for the small, round, fine-mesh screen. Sometimes it gets covered with dirt and debris and has to be cleaned as it allows the fuel to flow into the metering side of the carburetor.

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Have a craftsman 16″ chain saw 358.360260. Could not initially get it started after it had sat for a couple years with fuel stabilizer in it. When I went to use it the fuel had all evaporated and the fuel pick line was rotted. I replaced that with some difficulty but finally got it on. Saw still wouldn’t start. Replaced the fuel filter. Still wouldn’t start. Pulled the carb apart and cleaned and recleaned everything. Diaphragms were good and I didn’t adjust any of the mixture screws because as I said it ran fine before storage. Non of the carb passages were clogged. Fresh gas 40:1, good spark plug and good spark. Airfilter is good. Engine has maybe about 4 hours of total run time on it. It’s a ZAMA (?) carb. It will run for about 30 seconds when I manually prime it by pouring a small amount of fuel directly though the carb. When I was disassembling the carb the vent hose that goes back into the fuel tank seemed to have a small out of ?substance? in it which I cleaned out. It was right at the end the of the hose that goes back into the fuel tank and not up by the carb. It didn’t appear to be like your typical gummy deposits/varnish though. I hope it wasn?t some type of spongy check valve stuff that is supposed to be in there. That might explain some of my problems. Anyway, I also can not seem to get the primer bulb to fill. When I open the fuel tank, look in side and depress the primer bulb, air bubbles come out of the fuel filter. But when I let the bulb reexpand there’s no fuel that gets sucked up the hose. I can however seem to fill the primer bulb when the fuel tank is full and the chainsaw is laying on it?s pull cord side and the bulb is depressed a bunch of times. The saw will also start and run again for about 15 seconds then die. It’s definitely not getting/fuel and probably running out . Thanks.
ANSWER :

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I have a John Deere riding mower with a Kholer CV12-5S engine. It runs great when the fuel filter is full but the engine seem to **** the fuel filter empty and fuel seems to stop flowing. If I pull the fuel line off of the carburetor the fuel flows freely. The tank is clean and unobstructed, new hoses, filter, and shutoff valve. I have checked all the carb ports and vents and float. When first reconnected fuel flows freely, fills up the filter and bowl and the engine runs fine. Then within a few minutes the filter begins to loose volume as it is being used by the engine faster then it can flow into the filter. Eventually flow stops completely, the filter is drained and the engine dies. I am at a loss, and have no idea what to look for. Help Please? I cannot afford a repair shop at this time.
ANSWER : Drain the tank.
Remove the line between the tank and filter
Use an air compressor to blow air back into the tank.
There is a screen in the tank that must be partiallly blocked. Use air to blow out all the lines

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Engine running rich?
ANSWER : Worn float needle or obstructed airflow (plugged foam filter)

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Filter problem with hayward pool system – Hayward Pro Series Side Mount Sand Filter 30" S310s
ANSWER : You didn’t say what your exact problem was so troubleshooting with you might be difficult. Below is a link to the owners manual for these pool filters. You should be able to get your filter running properly using this.

http://www.backyardcitypools.com/images/hayward/pro-series-manual.pdf

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I need the fuel line size on Homelite gas blower. Is the fuel filter a washable/cleanable filter?
ANSWER : I think they are 1/8 in hoses on them and if it is a foam filter they are washable,mild soap and then a light coating of oil

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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?
ANSWER :

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Fuel problem Starts fine but starts to die after running for 1-2 min. Can press the primer keep it running. Replaced fuel lines, fuel filter, air filter. Drained/replace fuel and oil.
ANSWER : ENGINES NEEDED TO REPAIR BY AUTOMOTIVE ENGINEER.

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