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OT: Troybilt Model TB20CS Trimmer

My dad gave me a new trimmer for my house I just bought but unfortunately it has some problems with it. The choke has 3 settings. According to the instructions, you put it in the first position for the initial attempt to start it and then you move it into position 2 to start it and then after it is running, move it to position 3.

For some reason, whenever I try to give the trimmer and gas in position 3, it dies regardless of how long its been warming up. I tried running it in position 2 and it worked just fine.

Any ideas how I should alleviate this problem to get it working right?

Reply to
Reasoned Insanity
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I had a Lawn Boy trimmer with the same type of choke setup. To kind of get back on-topic, I got the Lawn Boy trimmer from Toyota as an incentive when the dealers in my district sold lots of service hours ;-)

I hated that choke setup, and it was always a pain to get the engine running. If the choke is like a twist knob with stepped teeth on the bottom of the knob, when the knob is in position 3, the air-fuel mixture is probably not right. The carb should have 2 mixture screws - one for high speed and one for idle. Turn the idle screw 1/4 turn in each direction to see if it makes a difference, taking care to note the original position of the screw head so that you can put it back to the same position if necessary. If a 1/4 turn makes it run a little bit longer before dying, give it more 1/4 turns until it idles properly with the choke in position 3.

BTW, my Echo trimmer always starts on the 2nd pull, even after it has been sitting all winter :-)

Reply to
Ray O

Take it to the store and ask them.

Jeff

Reply to
Jeff

This is a 2-cycle engine. The choke must be in the fully open position for it to run. Try this;

1.turn on switch, if it has one.
  1. close choke, never mind position numbers.
  2. pull starter rope until engine tries to start,
  3. open choke fully, part throttle, start engine.
Reply to
doc

That is what I do with my Echo trimmer. Works great.

Reply to
Scott in Florida

To meet emission requirements most small engines don't have low and high speed fuel adjustments anymore, so you can't adjust them richer like the old days. If it's an older one it might have these adjustments, you can break about 100 laws and modify the plastic limiters on the adjustment screws but it appears likely you will have to take the carburetor off and clean the jets and probably "kit it". The parts are usually about

12 to 15 dollars. Fuel lines are known to go bad if alcohol containing gas is used. Also make sure the cap is venting properly, and the fuel filter isn't clogged. To start a balky small engine take the air cleaner off and spray some carburetor cleaner into the throat of the carburetor, but not on old four cycle engines, it will loosen the gunk on the intake valve and cause it to stick. About the time you get it running good the pull start rope is bound to break.
Reply to
Moe

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