Bilt Tb70ss Gas Trimmer
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The carburetor will likely require replacement, the series of carbs used by MTD on these handhelds are relatively inexpensive and are prone to failure, some might suggest trying fresh fuel and a carb overhaul, but past changing the gas and maybe cleaning the carb your time and money will be better spent replacing the carb, primarily because these carbs are not easily adjustable and an overhaul kit plus labor usually costs more than a whole new carb in the first place. Plus there are only two fasteners holding the carb on, a novice can replace it easily, so no labor charges for a DIY. Also check your fuel lines for brittleness or a broken off pickup line, this will cause a fuel starvation problem, as well as leaks later on.
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If your trimmer engine idles, but stalls on throttle, check the following parts: the gasket, primer bulb, fuel filter, air filter, fuel vent, fuel line, and carburetor. The repair and symptom guide will help you better identify the part needed to be replaced and how.
A clogged fuel filter is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the fuel filter and cause the engine to stall.
When your trimmer starts and runs on choke, it could be because the check valve in the gas cap is clogged. Start the trimmer and gently unscrew the gas cap halfway off. Turn the choke off and assess. If the engine is still running, that means the gas cap may be the culprit.
So, an air filter might clog over time. Once blocked with dust and debris, it cannot supply the required amount of oxygen to your trimmer` engine resulting in power loss. Find the air filter, take out this component, clean and reassemble it. Replace the part if you cannot reuse it.
The most likely culprit is a dirty or clogged air filter. Issues with your fuel pump or fuel filter can also cause your engine to idle then die with any throttle. If you have an older car, it could also be a bad carburetor.
Just Like Spark plug fouling, too much oil in the gasoline, inferior oil, a dirty air filter and/or continued operation at less than full throttle will plug the screen with carbon deposits. This prevents exhaust gases from flowing out, which leads to power loss or not running at all.
If your trimmer won`t turn on, especially if it has not been used recently, you may simply have a drained battery. Plug your trimmer into your charger and see if anything happens. Ideally your trimmer will recognize it has been connected to a power source and charge its battery.
If your bike is only running with the choke on, it`s probably because it`s running too lean. This can be caused by a few different things: All internal combustion engines need three things to run: fuel, air, and spark. If any of these are missing or not working properly, the engine won`t run.
An engine that will fire and run with the choke closed but dies when the choke is opened likely has debris at least partially blocking the fuel passages in the carburetor. In this condition the closed choke provides enough extra fuel to enter the engine to overcome the lack of fuel flowing through the other passages.
Turn the high speed or main jet screw clockwise until the engine begins to slow. Then, turn the screw the other way until the engine begins to slow. Turn the screw back to the midpoint. Once adjusted, check engine acceleration by moving the throttle from idle to fast.
Checking the Fuel Mix
The most common problem with a strimmer not starting is that there`s a problem with the fuel mix. Double check that you`ve used 40 parts fresh unleaded petrol to 1 part 2-stroke oil (40:1). Check the petrol you`ve used isn`t stale.
Discover Relevant Questions and Answers for Your Specific Issue
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Why would prima bulb not pulling up gas – Troy Bilt Tb70ss Gas Trimmer
Hole in line or bulb . line not tight on fitting or not down in gas tank far enough to pick up fuel Bad gasket between bulb and mounting surface.
I have replace the entire fuel system and new gas, it was running fine until today. It died and won’t restart what could be the problem??
If you have no spark then the coil failed a bad spsrk plug would just cause a week spark not no spark
How do you repair a leaking gas line? it leaks between the gas line and the tank
Possibly, but it might start coffin and spluttering if you fit one.
What oil gas ratio do i need – Troy Bilt Tb70ss Gas Trimmer
Hello rvan. the ratio is 50:1. the easiest way to achieve this is to buy a 2 gallon plastic gas can and a few of the 2 cycle engine oil bottles that are made especially to add to either one or two gallons of gas. Joe
How to check coil on weedeater
Get a cheap spark checker at your local auto parts store.
Troy Bilt string trimmer starts but dies when I try to give it gas to trim.
Try mixing up some fresh gas mixture if it is over 30 days old it is considered bad gas. Or the carburetor may need to be rebuilt.
Troy Bilt Rear tine tiller model 643 Bronco, won’t start,it ran out of gas, put in new gas and it started but wouldn’t stay running. Put in new spark plugs, cleaned filters, changed out gas,still won’t start
Did it run out of gas when you added gas it could be that the fuel line has plugged up with something from the bottom of the tank take the fuel line off and try blowing threw it and take a air hose and blow out the carb and carb cleaner
How can the airgap on my TB trimmer get to wide or to close by just using it?
Sounds like your coil is not secured properly, adjust to spec. and tighten.