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OWNER'S MANUAL
2024
TXT RACING 125
TXT RACING 250
TXT RACING 280
TXT RACING 300
TXT GP 250
TXT GP 300
Art. no. 3215159en

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Table of Contents
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Summarization of Contents

Representation Methods
1.1 Symbols Used
Explains the meaning of specific symbols used in the manual.
1.2 Formats Used
Explains the typographical formats used in the document.
Safety Advice
2.1 Intended Use
Defines the vehicle's authorized operation and limitations.
2.2 Misuse
Describes improper uses and potential dangers.
2.3 Safety Instructions
General safety advice and importance of warning labels.
2.4 Risk and Symbol Definitions
Explains danger levels and associated symbols.
Important Notes
3.1-3.3 General Information and Recommendations
Warranty, fuel, parts, and service guidelines.
3.4-3.6 Service and Support
Service requirements, figures, and customer support.
Vehicle View
4.1 Front Left View
Illustrated view of the front left side with component labels.
4.2 Rear Right View
Illustrated view of the rear right side with component labels.
Serial Numbers
5.1 Vehicle Identification Number
Location and description of the VIN.
5.2 Type Label
Location and description of the type label.
5.3 Engine Number
Location and description of the engine number.
5.4 Fork Article Number
Location and description of the fork article number.
Controls
6.1-6.3 Handlebar Controls
Clutch lever, hand brake lever, and throttle grip.
6.4 Magnetic Switch
Operation and states of the magnetic switch.
6.5 Stop Button
Operation of the stop button for engine control.
6.6 Light Switch
Operation of the light switch (Not homologized).
6.7 Light Switch
Operation of the light switch (Homologized).
6.8 Horn Button
Operation of the horn button (Homologized).
6.9 Turn Signal Switch
Operation of the turn signal switch (Homologized).
6.10 Map Switch
Function of the map switch (Not homologized).
6.11 Indicator Lights Overview
Explanation of various indicator lights (Homologized).
6.12 Steering Lock
Operation of locking the steering (Homologized).
6.13 Fuel Tap
Operation and positions of the fuel tap.
6.14 Choke Button
Operation of the choke button (Not homologized).
6.15 Choke Lever
Operation of the choke lever (Homologized).
6.16 Shift Lever
Description and operation of the shift lever.
6.17 Kick Starter Lever
Description and operation of the kick starter lever.
6.18 Foot Brake Lever
Description and operation of the foot brake lever.
6.19 Side Stand
Operation and use of the side stand.
6.20 Locking the Steering
Operation of locking the steering (Homologized).
6.21 Unlocking the Steering
Operation of unlocking the steering (Homologized).
6.22 Opening Fuel Tank Filler Cap
Procedure for opening the fuel tank cap.
6.23 Closing Fuel Tank Filler Cap
Procedure for closing the fuel tank cap.
Combination Instrument (Option: Homologized)
7.1 Overview
Identifies components of the combination instrument.
7.2 Activation
How to activate the combination instrument.
7.3 Messages on the Combination Instrument
Explains displayed messages and their meanings.
7.4 Setting the Combination Instrument
Steps to set units and clock.
7.5 Setting Kilometers or Miles
How to change the unit of measurement.
7.6 Setting the Clock
Procedures for setting the clock display.
7.7 Setting the Service Display
How to set or shorten the service interval.
7.8 Speed, Time, and DST Distance 1
Display and adjustment of distance measurement 1.
7.9 Speed, Time, and DST2 Distance 2
Display and adjustment of distance measurement 2.
7.10 AVG, ART, and ODO Display
Shows average speed, operating hours, and total distance.
Preparing for Use
8.1 Advice on Preparing for First Use
Essential checks and advice before initial operation.
8.2 Running in the Engine
Guidelines for engine break-in procedure.
8.3 Preparing for Difficult Operating Conditions
Advice for riding in adverse conditions.
Riding Instructions
9.1 Pre-Ride Checks and Maintenance
Daily checks to ensure safe operation.
9.2 Starting
Procedures and safety for starting the engine.
9.3 Starting Off
How to move off from a standstill.
9.4 Shifting and Riding
Techniques for gear shifting and riding.
9.5 Braking
Proper braking techniques and warnings.
9.6 Stopping and Parking
Procedures for stopping and parking safely.
9.7 Transporting
Guidelines for transporting the motorcycle.
9.8 Refueling
Safety precautions and procedures for refueling.
Service Schedule
10.1 Additional Information
Notes on service intervals and updates.
10.2 Service Schedule
Table detailing maintenance tasks and intervals.
Tuning the Chassis
11.1 Basic Chassis Setting
Adjusting suspension based on rider weight.
11.2 Rebound Damping of Shock Absorber
Adjusting the rebound damping.
11.3 Compression Damping of Shock Absorber
Adjusting compression damping for GP models.
11.4 Rear Wheel Unloaded Dimension
Measuring rear wheel dimension.
11.5 Static Sag of Shock Absorber
Checking and verifying static sag.
11.6 Spring Preload of Shock Absorber
Adjusting spring preload.
11.7 Riding Sag of Shock Absorber
Checking and verifying riding sag.
11.8 Adjusting the Riding Sag
Procedure for adjusting riding sag.
11.9 Basic Setting of the Fork
Notes on fork settings and issues.
11.10 Rebound Damping of the Fork
Adjusting rebound damping on the fork.
11.11 Compression Damping of the Fork
Adjusting compression damping on the fork.
11.12 Spring Preload of the Fork
Adjusting spring preload on the fork.
11.13 Adjusting Fork Fluid Barrier
Adjusting fork fluid barrier for damping.
Service Work on the Chassis
12.1-12.2 Lift Stand Procedures
Raising and removing the motorcycle from a lift stand.
12.3-12.5 Fork System Maintenance
Cleaning dust boots, removing/installing fork legs.
12.6-12.7 Triple Clamp Maintenance
Removing and installing the triple clamp.
12.8-12.9 Steering Head Bearing Service
Checking and adjusting steering head bearing play.
12.10-12.13 Headlight and Fender Service
Headlight mask, setting, and fender service.
12.14-12.17 Fender and Suspension Service
Fender and shock absorber removal/installation.
12.18-12.19 Shock Absorber Service
Removing and installing the shock absorber.
12.20-12.24 Air Filter System Maintenance
Air filter box and filter cleaning and installation.
12.25-12.26 Manifold Service
Removing and installing the exhaust manifold.
12.27-12.28 Main Silencer Service
Removing and installing the main silencer.
12.29 Changing Glass Fiber Yarn Filling of Main Silencer
Procedure for replacing silencer packing.
12.30-12.31 Fuel Tank Service
Removing and installing the fuel tank.
12.32-12.33 Chain Maintenance
Checking and cleaning the drive chain.
12.34-12.35 Chain Tension Adjustment
Checking and adjusting chain tension.
12.36-12.39 Component Wear Checks
Checking chain, sprockets, frame, link fork, and grips.
12.40-12.42 Clutch Lever Adjustments
Checking and adjusting clutch lever free travel and position.
12.43-12.44 Hydraulic Clutch Fluid Service
Checking and changing clutch fluid.
Brake System
13.1-13.3 Hand Brake Lever Adjustments
Checking and adjusting hand brake lever free travel and position.
13.4-13.5 Front Brake Disc Guard
Removing and installing the front brake disc guard.
13.6-13.7 Front Brake Caliper Service
Removing and installing the front brake caliper.
13.8-13.9 Front Brake Fluid
Checking and adding front brake fluid.
13.10-13.11 Front Brake Linings
Checking and changing front brake linings.
13.12 Checking Brake Discs
Checking front and rear brake disc thickness and condition.
13.13-13.14 Foot Brake Lever Adjustments
Checking and adjusting foot brake lever free travel and position.
13.15-13.16 Rear Brake Fluid
Checking and adding rear brake fluid.
13.17-13.18 Rear Brake Linings
Checking and changing rear brake linings.
Wheels, Tires
14.1 Removing the Front Wheel
Steps for removing the front wheel.
14.2 Installing the Front Wheel
Steps for installing the front wheel.
14.3 Removing the Rear Wheel
Steps for removing the rear wheel.
14.4 Installing the Rear Wheel
Steps for installing the rear wheel.
14.5 Checking the Tire Condition
Inspecting tires for damage, wear, and tread depth.
14.6 Checking Tire Pressure
Checking and adjusting tire pressure.
14.7 Checking the Spoke Tension
How to check and adjust spoke tension.
Electrical System
15.1 Diagnostics Connector
Location of the diagnostics connector.
15.2 Changing the Headlight Bulb
Procedure for replacing the headlight bulb.
15.3 Changing the Position Light Lamp
Procedure for replacing the position light bulb.
15.4 Changing the Turn Signal Bulb
Procedure for replacing the turn signal bulb.
Cooling System
16.1 Cooling System
Overview of the cooling system components.
16.2 Checking the Coolant Level
Procedure for checking the coolant level.
16.3 Checking Antifreeze and Coolant Level
Checking antifreeze concentration and coolant level.
16.4 Draining the Coolant
Procedure for draining the coolant.
16.5 Refilling with Coolant
Procedure for refilling the cooling system.
16.6 Changing the Coolant
Procedure for changing the coolant.
Tuning the Engine
17.1 Checking Play in Throttle Cable
How to check throttle cable play.
17.2 Adjusting Play in Throttle Cable
Procedure to adjust throttle cable play.
17.3 Carburetor Tuning
Effects of carburetor tuning on engine performance.
17.4 Carburetor - Idle Speed
Explanation of idle speed setting influences.
17.5 Carburetor - Adjusting Idle Speed
Procedure to adjust the engine idle speed.
17.6 Checking Basic Position of Shift Lever
How to check the correct position of the shift lever.
17.7 Adjusting Basic Position of Shift Lever
Procedure to adjust the shift lever position.
Service Work on the Engine
18.1 Emptying Carburetor Float Chamber
Procedure to drain the carburetor float chamber.
18.2 Checking the Gear Oil Level
How to check the engine gear oil level.
18.3 Adding the Gear Oil
Procedure for adding engine gear oil.
18.4 Changing the Gear Oil
Procedure for changing the engine gear oil.
Cleaning, Care
19.1 Cleaning the Motorcycle
Guidelines for washing and cleaning the motorcycle.
Storage
20.1 Storage
Recommended measures for storing the motorcycle.
20.2 Preparing for Use After Storage
Checks and maintenance before using after storage.
Troubleshooting
Engine Does Not Start
Possible causes and actions when the engine won't start.
Engine Has No Idle Speed
Possible causes and actions for lack of idle speed.
Engine Has Too Little Power
Possible causes and actions for reduced engine power.
Engine Stutters or Backfires
Causes and solutions for engine stuttering or backfiring.
Engine Overheats
Possible causes and actions for engine overheating.
White Smoke Development
Causes and actions for white smoke from exhaust.
Gear Oil Emerges from Vent Hose
Causes and actions for gear oil in vent hose.
Water in the Gear Oil
Causes and actions for water in gear oil.
Technical Specifications
22.1 Engine Specifications
Details on engine design, displacement, bore, stroke, and ignition.
22.2 Engine Tightening Torques
List of torque specifications for engine components.
22.3 Carburetor Specifications
Specific settings for carburetor components.
22.4 Capacities
Fluid capacities for gear oil, coolant, and fuel.
22.5 Chassis Specifications
Details on frame, fork, suspension, brakes, and tires.
22.6 Electrical System Specifications
Specifications for battery, lights, and signals.
22.7 Tire Specifications
Details on recommended front and rear tires.
22.8 Fork Specifications
Technical data for fork rebound damping, fluid barrier, and preload.
22.9 Shock Absorber Specifications
Technical data for shock absorber damping, sag, and pressure.
22.10 Chassis Tightening Torques
Torque specifications for various chassis components.
Substances
Brake Fluid DOT 4 / DOT 5.1
Specifications and recommended suppliers for brake fluid.
Coolant
Guidelines for coolant type, protection, and recommended brands.
Engine Oil, 2-stroke
Specifications and recommended suppliers for 2-stroke engine oil.
Gear Oil (API GL-4, SAE 75W)
Specifications and recommended suppliers for gear oil.
Hydraulic Fluid (15)
Specifications and recommended suppliers for hydraulic fluid.
Super Unleaded (98 Octane) Mixed with 2-Stroke Engine Oil (1:67)
Fuel mixture specifications and recommended oil.
Auxiliary Substances
Air Filter Cleaner
Recommended cleaner for the air filter.
Chain Cleaner
Recommended cleaner for the drive chain.
Fuel Additive
Recommended fuel stabilizer.
Long-life Grease
Recommended grease for long-term lubrication.
Motorcycle Cleaner
Recommended cleaner for the motorcycle.
Off-road Chain Spray
Recommended spray for off-road chain lubrication.
Oil for Foam Air Filter
Recommended oil for foam air filters.
Preserving Materials for Paints, Metal and Rubber
Recommended products for preserving surfaces.
Rubber Grip Adhesive
Recommended adhesive for rubber grips.
Universal Oil Spray
Recommended universal oil spray.
Standards
JASO FD
Classification for high-performance 2-stroke engine oil.
SAE
Viscosity classification system for oils.

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