Troy-Bilt TB20CS User Manual (English)

Questions and Answers:

R
richardshawJul 25, 2025
How to troubleshoot a Troy-Bilt TB20CS Trimmer that will not start?
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  Tara LopezJul 25, 2025
  If your Troy-Bilt Trimmer engine won't start, possible causes include an empty fuel tank (fill it with properly mixed fuel), a primer bulb that wasn't pressed enough (press it fully and slowly 10 times), or a flooded engine (squeeze the trigger and pull the starter rope). Other potential issues are old or improperly mixed fuel (drain and add fresh fuel), a fouled spark plug (replace or clean it), or a plugged spark arrestor (clean or replace it). Also, consider the outside temperature: if it's below 40ºF, pull the starter rope 10-15 times; if it's above 90ºF, squeeze the throttle control and pull the starter rope.
J
Jordan SmithJul 31, 2025
What to do if my Troy-Bilt TB20CS engine will not accelerate?
- T
  Tara OdonnellJul 31, 2025
  If your Troy-Bilt Trimmer engine won't accelerate, the issue might be due to old or improperly mixed fuel (drain the tank and add fresh fuel mixture), a dirty air filter (clean or replace it), or a plugged spark arrestor (clean or replace it). Another reason may be that the cutting attachment is bound with grass (stop the engine and clean the cutting attachment). In some cases, it might be caused by improper carburetor adjustment, in which case you should take it to an authorized service dealer for an adjustment.
S
Steven GordonAug 4, 2025
Why does my Troy-Bilt TB20CS engine lack power or stall?
- A
  Amanda HughesAug 4, 2025
  If your Troy-Bilt Trimmer engine lacks power or stalls, consider these potential causes: old or improperly mixed fuel (drain the gas tank and add a fresh fuel mixture), a fouled spark plug (replace or clean the spark plug), or a plugged spark arrestor (clean or replace the spark arrestor). Another reason may be improper carburetor adjustment, in which case you should take it to an authorized service dealer for an adjustment.
R
Ronald DillonAug 9, 2025
What to do if Troy-Bilt TB20CS Trimmer engine will not idle?
- A
  Anne WilliamsAug 9, 2025
  If your Troy-Bilt Trimmer engine won't idle, it could be due to a plugged air filter (replace or clean the air filter) or old or improperly mixed fuel (drain the gas tank and add a fresh fuel mixture). Another reason may be improper carburetor adjustment; in this case, adjust according to the Carburetor Adjustments section.
K
Kristi FlemingAug 14, 2025
Why Troy-Bilt Trimmer cutting attachment will not advance?
- P
  Paul GonzalesAug 14, 2025
  If the cutting attachment on your Troy-Bilt Trimmer will not advance, it could be due to several reasons. The cutting attachment might be bound with grass (stop the engine and clean the cutting attachment), or the cutting attachment might be out of line (refill with new line). Other potential causes include an inner reel bound up (replace the inner reel), a dirty cutting head (clean inner reel and outer spool), line welded (disassemble, remove the welded section, and rewind), or line twisted when refilled (disassemble and rewind the line). Also, make sure enough line is exposed (push the bump knob and pull out line until 4 inches (102 mm) of line is outside of the cutting attachment).
A
Ashley MannSep 10, 2025
What to do if Troy-Bilt Trimmer cutting line advances uncontrollably?

Troy-Bilt TB20CS Specifications

General

Engine Type	2-Cycle
Cutting Width/Swath	16 inches
Line Diameter	0.095 in
Start Type/Starting System	SpringAssist™
Shaft Type	Straight

Summary

Troy-Bilt Trimmer Safety Rules

Safety Alert Symbols and Warnings

Explains danger, warning, and caution symbols and their importance for safe operation.

Important Safety Instructions

Crucial safety guidelines for operator and bystander protection during use.

Safe Operation Guidelines

Procedures for fueling, operation, and avoiding hazards during use.

Storage and Transport Safety

Precautions for safely storing and transporting the unit to prevent accidents.

International Safety Symbols

Identification of key international safety symbols used on the product for user awareness.

Know Your Troy-Bilt Trimmer

Unit Applications

Describes the primary uses and functions of the trimmer, such as cutting grass and edging.

Trimmer Assembly Instructions

Installing and Adjusting the D-Handle

Step-by-step guide for attaching and positioning the D-handle for optimal grip.

Attaching the Cutting Attachment Shield

Instructions for securely installing the safety shield for the cutting head.

Oil and Fuel Information

Fuel Mixing Instructions

Proper ratio and procedure for mixing gasoline and 2-cycle oil for the engine.

Fueling Safety Precautions

Warnings and guidelines for safe fueling to prevent fire hazards.

Starting and Stopping Instructions

Engine Starting Procedure

Step-by-step guide for starting the trimmer engine, including choke usage.

Engine Stopping Procedure

How to safely turn off the trimmer engine after use.

Trimmer Operating Instructions

EZ-Link™™ System Operation

How to attach and use optional EZ-Link™™ system accessories.

Attachment Installation and Removal

Procedures for safely attaching or detaching cutting heads and accessories.

Trimmer Operation and Line Management

Guidance on holding, operating, trimming, and adjusting line length.

Decorative Trimming Techniques

Methods for precise trimming around obstacles like trees and fences.

Trimmer Maintenance and Repair

Scheduled Maintenance Overview

Outlines the maintenance schedule and required tasks for the unit.

Trimming Line Replacement

Detailed steps for installing new trimming line and managing line length.

Air Filter and Spark Arrestor Care

Procedures for cleaning and maintaining the air filter and spark arrestor.

Carburetor and Idle Speed Adjustment

Instructions for checking fuel mixture and adjusting idle speed.

Spark Plug Service and Storage

How to replace the spark plug and prepare the unit for storage.

Trimmer Troubleshooting Guide

Engine Starting Problems

Common causes and solutions when the engine fails to start.

Engine Running Issues

Troubleshooting for problems with idling, acceleration, and power loss.

Cutting Attachment Performance

Solutions for issues with line advancement and uncontrolled line extension.

Troy-Bilt Trimmer Specifications

Engine Specifications

Technical details and measurements for the engine components.

Drive Shaft and Cutting Attachment Specs

Specifications for the trimmer's shaft, cutting mechanism, and line.

Troy-Bilt Trimmer Warranty Information

Emission Control Warranty and Owner Responsibilities

Details on emission warranty, owner duties, and coverage scope.

Obtaining Service and Warranty Limitations

Procedures for service, limitations, and consumer rights under the warranty.

Troy-Bilt TB20CS User Manual

Table of Contents