, No.455 Rancher, 20″ Gas – Powered Chainsaw

Fairly new 455 rancher. Always started first pull. now not starting. pulled the plug and no gas getting to it. got spark, need gas! 🙂
Experienced gardeners share their insights in answering this question :
Needle valve could be stuck shut ,gas could be gumed up at carb.

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If the carburetor is new or has been rebuilt, you should set it to “factory” adjustment. You can do so by adjusting the idle mixture screws to 1.5-2 turns out, and the idle speed screw to 1-1.5 turns in. Warm the Engine Up. The engine`s running temperature directly correlates with proper air and fuel mixtures.
Spray liberally with carb cleaner – trying to direct the cleaner into the jets – and leave to soak for a few minutes. Use an air line (or a can of pressurised air, sold as an `air duster`) to blow through the jets. Repeat the previous step and this one until you can see no more gunge.
But as a general guide, a fuel-to-oil ratio of 50:1 is recommended for Husqvarna products up to and including 75cc. That comes out to 2.5 fluid ounces of oil per 1 gallon of gas.
But as a general guide, a fuel-to-oil ratio of 50:1 is recommended for Husqvarna products up to and including 75cc. That comes out to 2.5 fluid ounces of oil per 1 gallon of gas.
But as a general guide, a fuel-to-oil ratio of 50:1 is recommended for Husqvarna products up to and including 75cc. That comes out to 2.5 fluid ounces of oil per 1 gallon of gas.

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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?

Ryobi gas I changed the primer bulb and gas lines on my machine and now it doesn’t get any gas to the carb. The primer bulb pumps it up, when i take the gas line loose at the brass fitting on the bottom of the carb, gas spews out. If I pour gas straight into the carb, it will start and run until that gas is gone, then it goes dead. It’s like the gas goes to the fitting but won’t go into the carb, even if you pull the trigger like you were running the thing. Any suggestions? Gasless
ANSWER : Check the fuek lines for hole and leaks, check the fuel filter and clean if necessary. remove the carbuerator and inspect the gasket; it should be soft and flexible, if it seems hard or brittle replace it. clean the carb with carb cleaner sray (available at any local auto parts store) and compressed air. make sure you get inside the small fuel rail holes. also check the primer bulb for pin holes and proper seating/seal. if that doesn’t work have the carb repaired at a service center or replaced.

My tractor stalls like it is starved for gas although the gas tank is full. I,ve changed the fuel filter and the gas cap. I’ve cleaned out the gas tank, gas lines, and the carburetor bowl. The problem seems more acute when the gas tank is full or near full. At this time to alleviate the problem, I blow through the gas cap and the fuel filter fills with gas and it runs good again. But as soon as the fuel filter has no more gas, of course, it stalls until I blow on the gas cap. As the tank gets down to about 1/3 full, the engine runs OK. What else could cause this condition?
ANSWER : I had a similar problem with a sears tractor. close to the carbarator is a rectangle box with a rubber hose going to the engine block – remove the hose and spray carb cleaner in the hose wait a few mins and try again – its a vacuum for the carb

Having problem getting fuel to carb on JD LA 105 lawn tractor with B&S 19.5 gas engine. I replaced fuel filter and fuel pump but gas will not flow to carb. Gas flows from filter to pump and I can pour gas in line to carb and engine will run until gas runs out of line but gas will not flow through pump. Could new pump be bad , if so how can I check it out?

Do you mix gas and oil in this trimmer – Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer
ANSWER : Yes. Verifythe ratio, either 40:1 or 50:1

Need gas mix solution – Craftsman 25cc 2-Cycle Gas Blower/Vac
ANSWER : Check age of gas. Cannot be more than 30 days old.

Make sure to use fresh gas w/synthetic 2-cycle oil @ 40:1 ratio
(1 gal.) Gas to 3.2 oz. Oil).Do not use old or stale oil/gas mixture. Always
use the proper oil/gas mix. If you do not, your engine will suffer rapid,
permanent damage.

Do I need gas and oil mix – Poulan Super 250a Chainsaw Plate
ANSWER : I think Poulan uses a 40:1 ratio to one gallon of gas, however I have always used 50:1 the same as my sthl saws with no issue. I would rather have more oil mix that to little.

Just bought a used leaf blower, homelite, gas leaks out of the gas tank, where the gas tube fits into it.
ANSWER : “top of the gas tank where the gas tube fits into the tank”

I assume you’re describing the gas tank cap. if so, the o-ring is missing from the gas tank cap. You can find those at hardware stores.