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 3.5 out of 5 by 276.
  • y_2019, m_4, d_22, h_15
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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 3 out of 5 by from Runs good .... HOWEVER ... I started out with a Troy built 25cc trimmer And after a summer worth of use the pull start came apart and it locked up so I took it back to Lowes as it was under warranty and I exchanged it and bought the TB685 EC...Thinking that may be a little more expensive one would be built better… However after using it for part of the summer in 2018 and now in 2019 it fires right up I use it a day and a half and the pull start mechanism comes apart inside of it and locks up… So now once again I will have to take it back to Lowe’s and exchange it out for another one hoping that yet once again maybe the third time hopefully the mechanism won’t come apart again… I would think that Troybilt would have addressed this issue and put better pull start mechanism in their products as there are hundreds of reviews online were this has happened… The motor and such is a good product but a person after spending hard earned money on a product of this caliber should not half to take it back and exchange it repeatedly because of the exact same thing keeps happening… And might I add that I am using the power start system I purchased for it so I’m not even pulling on the rope to start it
Date published: 2019-04-20
Rated 1 out of 5 by from onlly lasts a few years after a few yrs failed to start, too costly to repair
Date published: 2019-04-20
Rated 1 out of 5 by from Used twice. Stopped working. No support I bought this in October and used it twice in the fall. This spring it will not pull start or jumpstart. Frozen. The 2 places for warranty work closest to me do not work on these anymore even though they are listed on the website and referred by customer service.
Date published: 2019-04-19
Rated 1 out of 5 by from The worst Troy-Bilt product I have ever owned. I am so angry with this trimmer that I made an account just so I could write this review. Quite simply it is not a good product; definitely not what I considered Troy-Bilt quality. I had this trimmer for two years. I used ethanol free gas, changed the oil, air filter, and the spark plug each time and "winterized" it each season. Late last season it appeared to start losing power. This season it would not pull start so I go buy one of the drill attachments. After spinning and spinning it finally started and immediately stopped. This happened multiple times. It finally started and kept running. For three minutes. As soon as I tried to trim the grass, it stopped. I restarted with the drill. It stopped again. This happened four more times and finally it would not start at all. Fresh gas, fresh oil, fresh plug, dead engine on a trimmer. Very unhappy!!
Date published: 2019-03-10
Rated 1 out of 5 by from No Longer a Troy-Bilt customer I bought this unit in September and less than 6 months later, the flywheel broke. OK, not a problem, I call Troy-Bilt to be told I could order the part, I asked "why it is under warranty"? So they direct me to a local repair shop, just to find out there is a 3 week wait and I have to get repaired and I have to put a deposit before they will repair. Never again will I buy any Troy-Bilt products.
Date published: 2019-03-07
Rated 1 out of 5 by from expected better - will not buy again next year thought maybe I had a lemon, but too many other comments agree. After first use in July, went into shop under warranty for oil leak. Was ok for the season, but pull starter was going out and took several pulls to engage. Last week about 30 minutes into edging, the thing blew oil everywhere and locked up. This thing is trash.
Date published: 2018-12-28
Rated 1 out of 5 by from Terrible product broke in less than 1 season Bought this and the edger attachment, drive shaft broke within 7 uses. After first use would not idle correctly
Date published: 2018-12-27
Rated 1 out of 5 by from Won't stay on I bought this recently and followed all the instructions closely (I even purchased one of the jump starters to make it easier). Everytime I start the trimmer it appears to be working but when I squeeze the trigger it just stalls. I looked online and found this was a common problem. Very disappointed.
Date published: 2018-11-25
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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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