TB685 EC Straight Shaft String Trimmer

30cc, 4-Cycle Gas Trimmer / Attachment-Capable Design

Model No. 41CDZ68C766


Where to Buy

The TB685 EC gas trimmer with Prime & Go™ Starting System and SpringAssist™ technology, and the ability to use JumpStart™, is easy to start and easy to use.  This trimmer features the new Quick Change cutting head as well as a bonus Aero-Flex® fixed line cutting head for a choice in cutting options. The Quick Change head allows you to convert from bump head to Aero-Flex®® blades in 30 seconds or less! The Bonus Aero-Flex® cutting head utilizes nylon blades to better cut through heavy vegetation without breaking or snagging on brush and obstacles. The TB685 EC trimmer comes equipped with a .095" cutting line that creates a 18" cutting swath and an adjustable Pro handle for both right and left-handed use. The TrimmerPlus® attachment system provides the ability to tackle multiple tasks with one trimmer.  TrimmerPlus® attachments and  JumpStart™ sold separately.

TB685 EC Straight Shaft String Trimmer is rated 3.4 out of 5 by 294.
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  • 30cc*, 4-cycle engine is cleaner and produces less noise
  • Multi-position Pro handle reduces vibration and operator fatigue

*as rated by engine manufacturer

  • 18"
  • .095"
  • 30cc, 4-cycle gas
  • SpringAssist™ w/ JumpStart™ Capability
  • Prime & Go™
  • Quick Change™ bump head
  • Quick loading
  • Yes
  • Multi-position Pro handle
  • Straight
  • 18 lbs
  • 2-year limited
Rated 1 out of 5 by from Not happy I bought this trimmer perhaps 10 months ago, in mid September of 2018, and, granted, I didn't use it for about 4 months or so during the winter months, but now the thing won't start. I have used this brand before, and they didn't last very long, but I thought if I spent a few more dollars, that I'd get better results. I didn't. I keep it stored in a place that is dry and secure, so the elements are not an issue. I don't usually write reviews, but I am tired of having to buy one of these things every year. I will admit, when it gets going, it is good at what it's supposed to do, I should not have to spend 15 minutes trying to start the thing. I would not recommend this brand to anyone!
Date published: 2019-08-27
Rated 1 out of 5 by from Piece of junk Bought this at the end of the season and have been able to run it maybe 5 times. So far the pill teeth have broken twice and now that I spent another $50 for the electric starter, the motor won't stay at full speed and dies. All fluids were checked and even has a new air filter. And of course I'm beyond warranty so I'm getting no help there. I recommend finding a different trimmer.
Date published: 2019-08-26
Rated 5 out of 5 by from Disappointed Bought this and is second one. Very low quality product.
Date published: 2019-08-05
Rated 1 out of 5 by from Broken after a few uses Something broke in the starting mech and since i dont have my original receipt they will not cover it even tho its build date is jan of 2018 and is clearly under warrenty i have a broken weed eater that has barley been used thanks troy bilt way to stand behind ur products
Date published: 2019-08-02
Rated 2 out of 5 by from Pull start failure, terrible warranty I purchased this new 7/14/2018 from Lowes in Lancaster Ohio. Used it for the latter part of the 2018 season. Bought the tiller attachment this spring. After the 4th use this summer the pull start completely broke. I contacted lowes and they said I would have to bring the trimmer in for them to send back to Troybilt for repairs and that it would take roughly 30 days.... So.... what am I supposed to do in the meantime while my new trimmer is off for repairs?? They just said sorry and stated that Troybilt takes awhile to fix things. But they did try and sell me the Jumpstart attachment... WOW!! Very disappointed with this. I have had other Troybilt products in the past with very few issues.
Date published: 2019-07-21
Rated 1 out of 5 by from Threw this product out in less than 3 years Months after I purchased this product it broke. It was the pull cord starter that broke. I brought it to an authorized dealer for repair. 2 years later the same part broke again. What a poorly manufactured product. I bought it because it was rated high but that was not the case. While I had it, I found it heavy and found I had to constantly apply pressure on the trigger to keep it from stalling.
Date published: 2019-07-10
Rated 3 out of 5 by from Not as good as it should have been I recently bought the TB685 EC at Home Depot. I used it two different occasion doing weekly yard work. The third time I experienced problems with the starter pull system, it will not catch and turn over the motor. It doesn't catch the little fan on the end of the drive shaft. If I had not bought the electric drill attachment I would not be able to use the machine. Other than the pull starter being no good the trimmer works well
Date published: 2019-07-07
Rated 1 out of 5 by from Won't rev up I purchased my Troy-bilt gas trimmer Just last May at Lowes. It worked fine all last summer and the first time I tried it this summer. But now I can only get it idle. It will not rev up to actually trim the grass. I went to my local service center and they told me if the problem with my gas trimmer was carburetor related that it would not be covered under warranty. What is the point of a 2 year warranty if it does not cover the basic operations of the device purchased? I really do not think I am expecting anything outside of the ordinary. What it comes down to is I can't use it. If I have to PAY to get it fixed while it is still under the 2 warranty then I will not be buying Troy-bilt products again. Purchased May 18th 2018 Item:41CDZ68C766 MDL:TB685EC S/N:1D048DD2146 I am not looking for a free hand out or anything else like that. I just want my trimmer to work.
Date published: 2019-06-21
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Operator's Manuals Disclaimer

Important Information - Please Read Carefully

The Operator's Manual is an important part of your new outdoor power equipment. It will help you assemble, prepare, maintain and safely operate your machine. Your outdoor power equipment was built to be operated according to the rules and instructions for safe operation which are contained in the operator's manual and on the machine itself.

Safety rules and instructions, if not followed, could endanger the personal safety and/or property of the operator and others. Read and follow all instructions in the manual before attempting to operate your outdoor power equipment. As with any type of power equipment, carelessness or error on the part of the operator can result in serious injury. Your machine is capable of amputating hands and feet and throwing objects. Failure to observe the safety rules and instructions, both on the machine and in the Operator's Manual, could result in serious injury or death.

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