Question about Troy Bilt 17 Inch 29 Cc Gas Powered Clutched Curve Shaft Trimmer #41ADT52C966

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Never used trimmer won't stay running.

My son purchased this trimmer a few years ago and never got it running. I took it and while I can get it to start, although not easily, it runs only for a minute or so and then stops. I have checked the plug and spark arrestor, put in fresh oil and gas and still no luck. I have gone through the starting process numerous times and still the same results. I have pulled the cord so many times my fingers are black and blue. It seems as if the gas is not continuing to get to the combustion cylinder. Determined to get it running but can not find any DIY guides on-line. What are the next steps I should take to get this in running order?

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Sometimes when they set up a long time the gas turns to something that smells like shellac and clogs up the fuel lines and the carb jets. Even though you've put in fresh gas, (1:50 ratio) the carb and lines may still be gunky. If you get it to start by spraying starter fluid in the carb, then its simply running out the starter fluid.

I would begin by replacing all the little plastic hoses from the gas tank to the carb and make sure the primer bulb is in good condition. That done, I'd take off the air filter and spray carb cleaner through it until it ran out. You'll have to crank some, without expecting it to start, but you have to get whatever is in there out.
This will mess up the spark plug, so if you have the old one, put it back in until the cleaning is done.
Press the primer bulb until you know fresh gas is coming out. When it is thoroughly cleaned, put it all back together and let it dry out.

Then try again, giving the bulb 4 or 5 hits. If it turns over on full choke and sounds as though it might run, back off the choke a little. You'll probably need to spray starter fluid in the carb until it is drawing fresh gas.
If you can't get it to run continuously, get a small screwdriver and when you get ready to start, turn the high speed adjustment a 1/4th turn to the right.
Keep trying that until it either runs or doesn't. Keep track of how many quarter turns you make. When it does start, hold the throttle wide open. If you've turned the screw to a point where it won't start at all, turn the hi speed screw back the number of turns you opened it, and then turn it all the way closed, counting the number of turns from where it originally was. After closing it, try a starting point at about 2.5 turns open. Once you get it started at wide open throttle, you have to play with the high speed screw, turning it first open, listening to the sound of the engine. If it starts to sound smoother, continue until it starts to stutter, then go back 1/2 turn. If it doesn't start, or sounds worse when you open it, turn back closed until it smooths out. Once started and it keeps running, run it long enough to get everything burned out.

To get it started easily after the hi speed is ok, then play with the low speed the same way. I would start by closing it (left) and counting the turns. Then go back to that point and open 1/2 turn. Do that until it either starts easily or is obvious it won't start and run well at low speed. Then go the other way.

It takes a while, but it will be worth it once you get it running. If all else fails, you can buy a new carb online for probably $30.
Good Luck!

Sirwriter

Posted on Jun 01, 2009

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Check the gas line and the return. The hoses may be clogged or defective.

Posted on Jun 01, 2009

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