Question about Troy Bilt Tb70ss Gas Trimmer

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Model TB475ss 4stroke good fuel, new plug, new fuel lines turns over runs about 3 seconds then dies when I open the throttle.

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: My TB475ss starts and dies right away

carb is out of adjustment or gummed up

Posted on Apr 21, 2009

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lonestaryard
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SOURCE: my TB475SS starts and then dies right away. i

It usually wont idle very well when it's cold, Goto #1 on the choke give the rope a couple of "quick" tugs, and then move it to #2 Give it one or 2 more tugs with a little throttle, now it should be running witha little throttle, let it run like that for a minute then move it to #3 kinda still pumping the throttle a little and it should take off fine. If this is the 4 stroke, mine did the same thing until it was broke in good. (About 4-5 uses), now I have to say its more reliable than any 2-stroke I've owned and I use it commercially. 1st or 2nd pull everytime and is ready as soon as it fires! Hope this helps!

Posted on May 19, 2009

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Demak ATM 200 dies with throttle


Hi, Shane nice novella, you need to get inside the carburetor and the usual suspects are:
1. Idle port, transfer ports, slow air jet clogged.
2. Idle adjusting screw set too low.
3. Air fuel mixture adjustment too lean.
4. Pilot/slow fuel jet clogged.
5. Faulty accelerator pump.
6. Float level too low.
7. Float bowl contaminated old fuel, water, dirt, rust, etc.
8. Carburetor bowl vent line clogged/blocked/pinched.
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10. Fuel filter clogged.
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12. The gas cap is not venting properly or fuel tank venting system blocked.
13. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
14. Needle and seat stuck closed in the float bowl.
15. Multi carburetors not in sync.
16. Faulty fuel pump or internal fuel line has pinholes.
17. Fuel injectors clogged or faulty.
18. Faulty throttle position sensor.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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I have a Troy Bilt trimmer model TB675EC...4 cycle engine. Problem that has arisen is that it dies at high speed and under load. Starts up and runs at idle well.


Fuel starved, carb should have an idle adjustment which sounds like it is fine. Look for the second adjustment

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Craftsman 18" chainsaw runs but dies when I press the throttle, new carb and fuel lines low and high speed set at 1 turn .


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Hit the throttle it quits running . it starts right up fast idle ok cuts good .wide open throttle runs fine. let it idle and hit the throttle it dies, starts right back up. has new carb kit, fuel, spark...


Conected to the rubber induction boot is the impulse hose, it is a short curled pipe, make sure this has not split and is conected to the two nipples on the carb flange.

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I have an old mcculloch chainsaw bought for a one time job with no manual it is model no pm 370 the saw starts and runs okay until i open throttle then it dies after maybe 10 seconds


Check the fuel filter, air filter, and muffler for plugging. Check the fuel lines for decay or other damage. The carburetor may need to be cleaned inside and out with spray carburetor cleaner. Check the lower chamber diaphragm for flexibility--no holes or cracks. Good luck!

Jul 20, 2010 | Garden

1 Answer

Starts and idles and runs half speed ok -- dies off on full throttle fuel lines & filter ok has ffuel in tank good spark & new plug muffler & screen & ports open clean good compression


Since you don't indicate the make and model, I can't give you specifics, but when I had this problem it turned out to be a dirty carb. This can cause uneven fuel flow and loss of power. At full throttle, you may not be getting sufficient fuel to work properly. Try cleaning the carb a nd update this with the results.

Dan

Jan 29, 2010 | Garden

1 Answer

Ryobi 4stroke brush cutter, fading on full throttle


This running pattern often indicates a lean fuel mix.

Unfortunately, with today's environmental hysteria, you probably will not be able to adjust the carburetor enough to get it to run better. If you do have any carburetor adjustment available, try turning the screw (the high speed screw, if there are two) counter-clockwise a bit. This will allow more gas into the mixture. Most small engines today have limiter caps that prevent very much carburetor adjustment.

Oct 10, 2009 | Garden

1 Answer

Troybilt 4 cycle trimmer (TB475ss) won't start. New tank, new plug, new gas??? Will occasionally start, run for about 10-15 secs, then stops. Won't restart. Help!


Take the plastic cover off that covers the muffler and cylinder head. I've had 2 cylinder heads crack. The trimmer still ran but had little to no power and would not throttle up. First head cracked at the head bolts. The second one cracked above the bolts. The side that has the carb and fuel tank is harder to see and you must remove the carb and fuel tank to check. Also I've read online that this trimmer has a problem with the fuel line cracking at the bulb and in the tank.

Sep 12, 2009 | Garden

1 Answer

Acts like it starving for fuel.


take a compresstion test to see if it's good.
sound like the carb needs to be rebuild but if you cant get a carb kit you have to get a new one. it happen to me one time to no kit had
get new carb.let me know how it go's ok

Jul 23, 2009 | Troy-Bilt 4-Cycle Curve Shaft Gas String...

1 Answer

My TB475SS starts and then dies right away. i


It usually wont idle very well when it's cold, Goto #1 on the choke give the rope a couple of "quick" tugs, and then move it to #2 Give it one or 2 more tugs with a little throttle, now it should be running witha little throttle, let it run like that for a minute then move it to #3 kinda still pumping the throttle a little and it should take off fine. If this is the 4 stroke, mine did the same thing until it was broke in good. (About 4-5 uses), now I have to say its more reliable than any 2-stroke I've owned and I use it commercially. 1st or 2nd pull everytime and is ready as soon as it fires! Hope this helps!

Apr 14, 2009 | Troy-Bilt 4-Cycle Curve Shaft Gas String...

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