TB635 EC Curved Shaft String Trimmer

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

Model No. 41ADZ63C766


Where to Buy

The TB635 EC curved shaft gas trimmer with SpringAssist™ technology features the new Click N Trim™ bump head, making line replacement easier than ever.  This versatile 4-cycle gas trimmer has an adjustable Pro handle as well as accepts all TrimmerPlus® trimmer attachments, allowing you to accomplish multiple tasks with one trimmer.  JumpStart™ sold separately.TrimmerPlus attachments sold seperately.

TB635 EC Curved Shaft String Trimmer is rated 3.5 out of 5 by 219.
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  • No Mixing of gas and oil

    Eliminate the need to mix oil and gas. Troy-Bilt’s 4-cycle engines take regular gas.

  • Click N Trim™ Bump Head

    The Click N Trim™ cutting head option makes it easy to refill without disassembling the cutting head. Simply feed the line through the eyelets, and then twist the head to wind the line in seconds.

  • SpringAssist™ Starting Technology

    SpringAssist™ starting technology dramatically reduces pulling effort by up to 55%.

  • JumpStart™ Capable

    Take the effort out of starting with JumpStart™ power start technology. Attach JumpStart to any JumpStart-capable Troy-Bilt® unit and start with the push of a button.

  • Accepts TrimmerPlus® Attachments

    Accepts interchangeable TrimmerPlus® attachments, which turn your trimmer into a garage full of tools.

  • 30cc*, 4-cycle engine is cleaner and produces less noise
  • Multi-position Pro handle reduces vibration and operator fatigue

*as rated by engine manufacturer

  • 17"
  • .095"
  • 30cc, 4-cycle gas
  • SpringAssist™ w/ JumpStart™ Capability
  • Prime & Go™
  • Click N Trim™ bump head
  • Quick loading
  • Yes
  • Multi-position Pro handle
  • Curved
  • 15 lbs
  • 2-year limited
Rated 1 out of 5 by from The string trimmer attachment worked once. I bought the trimmer and 2 other attachments: lawn edger and blower. The string trimmer worked the first day I had it, but ran out of string in 15 minutes. So the next day I bought some more line and had to remove the head as all the old line didn’t come out. Removing the head is no simple task, the manual makes it look easy, it isn’t! Put it back on and put in new line as directed. First of all the engine never starts easy, ended up buying JumpStart as I was getting wore out from pulling the starter rope. The “BUMP” trimmer seldom works and I end up having to remove the bump head to pull more string out. I’ve replaced the line several times meticulously following the line replacement instructions, but no, the bump feed still doesn’t work!!
Date published: 2019-03-26
Rated 2 out of 5 by from Poor running, this is a replacement for a previous 4 cycle troy built trimmer, which was great and had for about 8 years before bearing went out. The 635 which I have used for about three years, did not come close to the performance of the previous, hard to start and poor running. Cleaned carb, new spark plugs, fresh fuel still runs poor. Now the starter pull rope mechanism, the fan looking mechanism on the shaft, fell apart where it can only be started with the electric external starter. I have had other troy built product with no problem We bought a 2 cycle echo and it is superb to the 635.
Date published: 2018-12-13
Rated 1 out of 5 by from Disappointment I bought this about 1 1/2 years ago. From the start, I had problems with it starting. The past 6 months the product would not start due to the pull string assembly not working. The string would pull out and not retract. When I took a closer look this is what i found. See first image. Next I bought the ez start bit to start the trimmer. It worked four times and then It would start again. I took another closer look and this is what I found. A broken spindle and fly wheel. See attached photos. I'm sure that I am not the only one with this problem. I hope that you can use this to improve your product.
Date published: 2018-10-15
Rated 1 out of 5 by from Fell apart This worked well for about one and a half years and then the pull start mechanism fell apart trying to start the trimmer. Pieces literally broke up when I pulled the cord.
Date published: 2018-10-06
Rated 1 out of 5 by from Hard to Start I have replaced this trimmer 3 times because I have all the attachments and I have no choice. It is hard to start and the starter cord mechanism is not very good. It does not engage sometimes. Bought attachment to start it with a drill and it won't start that way for some reason. It works well with the attachments which I like but the things I have mentioned gives it an overall poor rating in my book.
Date published: 2018-10-05
Rated 5 out of 5 by from Great Equipment, Very Reliable and Very Versatile! Out of all of the String Trimmers I have owned, I have really loved this one the most! The 4 cycle is great with starting and runs great! No need to mix oil and gas any more which is a BIG plus! I have also bought the attachments so I now have multiple tools all in one!
Date published: 2018-10-04
Rated 3 out of 5 by from Not that happy having trouble with the pull start .I purchased a new pull start but the cord still will not recoil. So i had to purchase the jump start tool.So if you purchase this trimmer you need to get a jump start tool.
Date published: 2018-10-04
Rated 4 out of 5 by from Good trimmer I’ve only had this trimmer for a few days but I like it so far. Works well and easy to use.
Date published: 2018-09-16
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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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