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KTM 125 DUKE 2021 User Manual

KTM 125 DUKE 2021
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COOLING SYSTEM 16
187
16.3 Checking the coolant level
Warning
Danger of scalding During motorcycle operation, the coolant gets very hot and is under pressure.
– Do not open the radiator, the radiator hoses or other cooling system components if the engine or the
cooling system are at operating temperature.
– Allow the cooling system and the engine to cool down before you open the radiator, the radiator hoses
or other components of the cooling system.
– In the event of scalding, rinse the area affected immediately with lukewarm water.
Warning
Danger of poisoning Coolant is toxic and a health hazard.
– Keep coolant out of the reach of children.
– Do not allow coolant to come into contact with the skin, the eyes and clothing.
– Consult a doctor immediately if coolant is swallowed.
– Rinse the affected area immediately with plenty of water in the event of contact with the skin.
– Rinse eyes thoroughly with water and consult a doctor immediately if coolant gets into the eyes.
– Change clothing if coolant spills onto your clothing.
Condition
The engine is cold.

Table of Contents

Questions and Answers:

KTM 125 DUKE 2021 Specifications

General IconGeneral
Displacement124.7 cc
Bore x Stroke58 mm x 47.2 mm
Compression Ratio12.5:1
Transmission6-speed
Rear SuspensionWP APEX Monoshock
Front BrakeFour-piston radial fixed caliper, brake disc
Rear BrakeSingle-piston floating caliper, brake disc
Front Tire110/70 R17
Rear Tire150/60 R17
Seat Height830 mm
Dry Weight139 kg
FrameSteel Trellis Frame, Powder Coated
Ground Clearance175 mm
Engine TypeSingle Cylinder, 4-Stroke, Liquid Cooled
Torque12 Nm
Fuel SystemElectronic Fuel Injection
Front SuspensionWP APEX 43
Fuel Tank Capacity13.4 liters
Wheelbase1, 357 mm

Summary

Safety Advice

General Safety Guidelines

Covers proper use, misuse, and general safety instructions.

Operational Safety Warnings

Details warnings related to tampering and safe operation.

Controls

Handlebar Levers and Throttle

Introduces clutch lever, hand brake lever, and throttle grip.

Left Handlebar Switch Layout

Identifies controls on the left side of the handlebar including lights.

Right Handlebar Controls and Safety Switch

Covers horn, emergency OFF switch, and start button operations.

Dash

Combination Instrument Overview

Describes the dash display, indicator lamps, and activation.

Display Modes and Information

Covers day-night mode, speed, ODO, and other display features.

Warning Indicators and System Status

Explains various indicator lamps and warning signals for vehicle status.

Instrument Display Layout

Details the layout and elements shown on the main instrument display.

Speed and Shift Warning Light

Information on speed display and the shift warning light function.

Menu Navigation and Customization

Details menu access, settings, and preferences.

Preparing for Use

First Use Preparation and Safety

Advice for preparing the motorcycle for initial operation and safety.

Riding Instructions

Pre-Ride Checks and Safety

Essential checks before riding for roadworthiness and safety.

Starting the Engine Safely

Procedures for starting the motorcycle and associated safety.

Riding and Shifting Techniques

Guidance on shifting gears, riding, and handling the vehicle.

Braking System Operation

Instructions and warnings on applying brakes effectively.

Service Schedule

Tuning the Chassis

Brake System

Anti-lock Braking System (ABS) Overview

Explains ABS components, function, and warnings.

Wheels and Tires

Tire Pressure Check and Adjustment

Correct tire pressure for solo and passenger riding.

Electrical System

Fuse Management

Changing main, ABS, and individual electrical fuses.

Service Work on the Engine

Engine Oil Level Check

Procedure for checking engine oil level when the engine is warm.

Engine Oil and Filter Change

Steps for changing engine oil, oil filter, and oil screen.

Troubleshooting

Engine and Starting Faults

Diagnosing and resolving common engine starting and running issues.

Electrical System Faults

Diagnosing and resolving electrical system problems.

Technical Data

Engine Specifications

Detailed technical data for the engine components and performance.

Engine Tightening Torques

Specific torque values for engine fasteners and components.

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