Ok now when I first start the trimmer cold I put it on full choke of course then when I hear it pop or act like it wants to start then I put it on half choke and so on. It will start sometimes but when it does start it will run only for like maybe 5 seconds then cuts right off everytime it starts. I just got finished taking the carburetor apart then soaking it the carburetor cleaner yea know the little paint looking can with the basket in it by gunk. And it still is doing the same thing. I am thinking vapor lock but I tried to start it with the cap of o yea and I tried starting it with the muffler off also and still the same symptoms please help thank you.
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Re: Toro line trimmer model TB90BC
First you may want to check your fuel that is in the tank, how old is the fuel and was there any old fuel in the tank before you put fresh fuel in? Todays gas isn't as good as it used to be the ethonol in fuel is eating pretty much anything that is made of rubber in our 2 & 4 cycle engines cleaning doesn't always help. You may want to try a rebuild kit for it. And re-adjust the high and low idle needles (jets).
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Full choke until it tries to start, half choke until it does, and once it's running, open the choke fully and wait a few seconds for it to warm up before using it, as well as 15-20 seconds to let it cool down before shutting it off so as not to warp any metal parts of the engine
Hello Tony Galvan, I had to replace the fuel lines to keep from sucking air when I pressed on the primer bulb. Also, I took the carburetor apart and found the gasket was good by holding it up to the sunlight, no light came through indicating holes in the gasket. Then I took a magnifying glass and looked at the bottom half of the carburetor and noticed that a soft film of what looks like lint from a dryer had accumulated on a screen mesh type of filter. Once I cleaned the debris away, the weed wacker started every time. I pulled with a full choke and partially wants to start. Then moved the choke to half choke and pressed on the throttle fully and pulled, it started! But you must at least hold the throttle close to full until 10 seconds for the engine to warm up. Then move the choke to idle. Hope this helps. peterjb1
full choke on , push petrol bubble 5 times then pull starter cord., with luck it will kick in to life after a 20/30 secs put on half choke , run again for 30 secs the no ckoke.
The main problem with Ryobi products is that they flood very very easly. So the more time you try and pump petrol into the carb the more it will flood . If that happenes then choke off and switch off and then just pull starter cord for about 30 secs then switch on and it could start if not prime it again as above good luck
sounds like a carb problem You will have to take the carb off and strip it down to parts clean out all the ports with a good cleaner I use brake clean reassemble and reset the High speed and low speed jets at 1.5 turns out then adjust from there
Alow the engine to run for longer on the start setting before you switch to run (choke turned off)
Ensure air filter is clean. Foam elements can be washed
with hot water and detergent and then rub about half a teaspoon of oil evenly through the foam. Paper elements can be cleaned with
compressed air blown from the inside of the filter but ideally should be
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
Ensure the choke is turning off ok when you rev the machine (automatic turn off choke)
Yes, the throttle should be in the full in position. When starting, the choke should also be in the full on position. If you can't tell if it is in the closed or open position, remove the cover that is over the carb where the air filter is and you should be able to see which way you move the lever for the closed or open position and mark it where you can see it. When starting put the throttle full on and the choke also in the full on position. It should usually start and stop right away. Now move the choke to the full off position keep the throttle in the full on position and it should start in 2 or 3 pulls. If it doesn't do the procedure again. While you have the cover off the carb check the air filter and if it is very dirty replace it or clean it off because a really dirty air filter could make it run rough or not start at all. I will gladly answer any questions. Best regards and good luck.
The problems you are having sounds very much like a blocked exhaust port/silencer. On these small two stroke machines it is normally the cause of lack of power or not revving. Happy gardening !!