EasyManua.ls Logo

Troy-Bilt TB685 EC - User Manual

Troy-Bilt TB685 EC
40 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
769-10061 / 00 07/14
Operator’s Manual
Electric Start Capable
4-Cycle Trimmer
TB685 EC
TABLE OF CONTENTS
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Oil and Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
All information, illustrations, and specifications in this manual are based
on the latest product information available at the time of printing. We
reserve the right to make changes at any time without notice.
Copyright© 2014 MTD SOUTHWEST INC, All Rights Reserved.
DO NOT RETURN THIS UNIT TO THE RETAILER. PROOF OF
PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.
For assistance regarding the assembly, controls, operation or
maintenance of the unit, please call the Customer Support Department
at 1-800-828-5500 in the United States or 1-800-668-1238 in Canada.
Additional information about the unit can be found on our website:
www.troybilt.com (U.S.) or www.troybilt.ca (Canada).
For service, please call the Customer Support Department to obtain
a list of authorized service dealers near you. Service on this unit,
both within and after the warranty period, should only be performed
by an authorized and approved service dealer. When servicing, use
only identical replacement parts.
SAVE THESE INSTRUCTIONS
SERVICE
IMPORTANT: Read this manual thoroughly before using this product. Follow all instructions.

Table of Contents

Questions and Answers

  • T
    Tammy BennettAug 18, 2025
    Why Troy-Bilt Trimmer engine will not start?
    • H
      Heather StoneAug 18, 2025
      Several factors can prevent your Troy-Bilt Trimmer engine from starting. It could be due to: an empty fuel tank (fill it with fresh fuel); insufficient priming (press the primer bulb 10 times or until fuel is visible); old fuel (drain the tank and add fresh fuel); a fouled spark plug (replace it); or an overheated engine (refer to the 'IF THE ENGINE IS HOT' instructions in the Starting and Stopping section).
  • T
    Tiffany AustinAug 20, 2025
    What to do if Troy-Bilt Trimmer engine lacks power or stalls?
    • D
      David HoltAug 20, 2025
      If your Troy-Bilt Trimmer engine lacks power or stalls, the issue might be due to old fuel (over 30 days old, so drain the fuel tank and add fresh fuel), a dirty air filter (clean or replace the air filter), or a fouled spark plug (replace the spark plug).
  • C
    Carlos WaltersAug 22, 2025
    How to fix Troy-Bilt Trimmer cutting head that will not advance line?
    • T
      thomasmercadoAug 23, 2025
      If the cutting head on your Troy-Bilt Trimmer won't advance the line, consider these possibilities: the cutting head might be bound with grass (stop the engine and clean it); the cutting head is out of line (refill with new line); the inner reel is bound up (clean the inner reel and outer spool); the cutting head is dirty (open the cutting head and remove the welded section); the line is welded (rewind the line); the line is twisted (stop the unit, push the bump knob and pull the line until 4 inches (102 mm) is outside of the cutting head); not enough line is extended (clean and thoroughly dry the cutting head).
  • D
    Debra MartinezAug 26, 2025
    What to do if Troy-Bilt Trimmer cutting line advances uncontrollably?
    • S
      samanthasuttonAug 26, 2025
      If the cutting line on your Troy-Bilt Trimmer advances uncontrollably, it is likely due to oil, cleaner, or lubricant being present in the cutting head. To resolve this, clean and thoroughly dry the cutting head.
  • A
    Alexander FarrellAug 28, 2025
    Why Troy-Bilt Trimmer engine will not accelerate?
    • D
      Dorothy SpencerAug 28, 2025
      If your Troy-Bilt Trimmer engine won't accelerate, it could be due to old fuel (drain the fuel tank and add fresh fuel), a cutting head bound with grass (stop the engine and clean the cutting head), or a dirty air filter (clean or replace the air filter).
  • C
    Calvin LewisAug 30, 2025
    Why Troy-Bilt Trimmer engine will not idle?
    • L
      Lisa Walters PhDAug 30, 2025
      If your Troy-Bilt Trimmer engine won't idle, it could be due to a dirty air filter (clean or replace it), old fuel (drain the tank and add fresh fuel), or an incorrect idle speed (adjust the idle speed).
  • C
    Christine OwenSep 2, 2025
    What to do if my Troy-Bilt Grass timmer engine will not start?
    • J
      Julian SchmittSep 2, 2025
      If your Troy-Bilt Grass timmer engine won't start, several factors could be the cause. First, ensure the fuel tank isn't empty by filling it with fresh fuel. If the primer bulb wasn't pressed enough, try pressing it 10 times. Old fuel (over 30 days) can also be a culprit; in this case, drain the tank and add fresh fuel. Lastly, a fouled spark plug can prevent starting, so consider replacing it.
  • T
    Timothy FrancoSep 4, 2025
    Why does my Troy-Bilt Grass timmer engine lack power or stalls?
    • A
      Ashley JonesSep 4, 2025
      If your Troy-Bilt Grass timmer engine lacks power or stalls, several factors could be the cause. Old fuel (over 30 days) may be the issue, so drain the fuel tank and add fresh fuel. A dirty air filter can also cause this problem, so clean or replace it. Additionally, a fouled spark plug might be the reason, so consider replacing it.
  • D
    Debra RamseySep 7, 2025
    What to do if my Troy-Bilt Grass timmer engine will not accelerate?
    • B
      bradshawmeghanSep 7, 2025
      If your Troy-Bilt Grass timmer engine won't accelerate, consider these potential causes. Old fuel (over 30 days) can be a problem, so drain the fuel tank and add fresh fuel. Also, check if the cutting head is bound with grass; if so, stop the engine and clean the cutting head. A dirty air filter can also hinder acceleration, so clean or replace it.
  • O
    Olivia RojasSep 9, 2025
    How to fix a Troy-Bilt Grass timmer cutting head that will not advance line?
    • R
      Ricardo ClarkSep 9, 2025
      To fix a Troy-Bilt Grass timmer cutting head that won't advance line, consider these solutions: First, stop the engine and clean the cutting head if it's bound with grass. Clean the inner reel and outer spool if the cutting head is out of line. If the inner reel is bound up, open the cutting head and remove any welded sections. Clean and thoroughly dry the cutting head if it's dirty. If the line is welded or twisted, rewind it. Finally, if not enough line is extended, stop the unit, push the bump knob, and pull the line until 4 inches (102 mm) extends outside the cutting head.

Troy-Bilt TB685 EC Specifications

General IconGeneral
Engine Type2-cycle
Shaft TypeStraight
Weight12.3 lbs
Fuel TypeGasoline
Line Diameter0.095 inches
Cutting Swath17 inches
Starting SystemJumpStart capable
Cutting Width17 in
Line FeedBump Feed
Warranty2 years