KTM 50 SX 2022 User Manual

The information contained in this publication is offered for the
benefit of those who have an interest in riding off-highway
motorcycles. The information has been compiled from
publications, interviews and observations of individuals
and organizations familiar with the use of off-highway
motorcycles. Because there are many differences in product
design, riding terrain and riding styles, there may be
organizations and individuals who hold differing opinions.
Consult your local motorcycle dealers or experienced
off-highway motorcycle riders about appropriate riding
locations in your area. Although the Motorcycle Safety
Foundation will continue to publish responsible viewpoints on
this subject, it must disclaim specific or general liability for the
views expressed herein.
The Motorcycle Safety Foundation
®
(MSF) is a national
not-for-profit organization promoting the safety of motorcyclists
with programs in rider training, operator licensing and public
information. The MSF is sponsored by BMW, BRP, Ducati, Harley-
Davidson, Honda, Kawasaki, KTM, Piaggio, Polaris Motorcycles,
Suzuki, Triumph and Yamaha.
Motorcycle Safety Foundation
2 Jenner, Suite 150
Irvine, CA 92618
949.727.3227
msf-usa.org
Copyright 2015
Printed: March 2015
Use for TEXT ONLY P1-to 44

KTM 50 SX 2022 Specifications

General

Displacement	49 cc
Cooling System	Liquid cooled
Transmission	Single-speed automatic
Starter	Kickstarter
Front Brake	Disc brake
Rear Brake	Disc brake
Seat Height	684 mm
Weight (without fuel)	41.5 kg
Engine Type	Single cylinder, 2-stroke
Front Suspension	WP XACT USD, Ø 35 mm
Rear Suspension	WP XACT shock absorber
Fuel Tank Capacity	2.3 liters
Frame	Steel
Bore x Stroke	39.5 mm x 40 mm

Summary

Symbols and Formats Used

Symbols Used in Manual

Explains the meaning of various symbols used to convey information in the manual.

Formats Used in Manual

Explains typographical formats like proprietary names and underlined terms.

Safety Advice

Intended Use, Misuse, and Risk Symbols

Defines intended use, misuse, general safety advice, and risk symbol meanings.

Safe Operation and Tampering Warnings

Guidelines for safe operation and warnings against tampering with noise control systems.

Protective Clothing and Work Rules

Recommendations on protective clothing, work procedures, environmental care, and owner's manual.

Important Notes

Warranty, Fuel, Parts, and Service

Covers manufacturer warranty, fuel/substances, spare parts, service, and customer support.

View of Vehicle

Vehicle View - Front Left

Diagram illustrating the front left view of the vehicle with labeled components.

Vehicle View - Rear Right

Diagram illustrating the rear right view of the vehicle with labeled components.

Serial Numbers

Vehicle Identification and Engine Numbers

Details on locating and identifying the vehicle identification number and engine number.

Fork and Shock Absorber Part Numbers

Information on identifying fork and shock absorber part and article numbers.

Controls

Basic Controls - Levers and Buttons

Description and operation of hand brake lever, throttle grip, stop button, and fuel tank cap.

Choke Operation

Instructions for operating the choke on both 50 SX and 50 SX MINI models.

Other Controls and Indicators

Details on kick starter, foot brake lever, plug-in stand, and service hour counter.

Preparing for Use

First Use Preparation Advice

Essential advice and checks before the initial use of the motorcycle.

Engine Break-in Procedure

Guidelines for running in the engine during the initial operating hours.

Riding Instructions

Pre-Ride Checks and Starting the Vehicle

Procedures for pre-ride checks and steps for safely starting the motorcycle.

Braking and Parking Procedures

Instructions on applying brakes correctly and safe methods for stopping and parking the vehicle.

Transporting and Refueling

Guidance on safely transporting the motorcycle and proper refueling procedures.

Filling Oil Tank (50 SX MINI)

Procedure for filling the oil tank on the 50 SX MINI model.

Service Schedule

Service Schedule Overview

Information on service schedules, including additional notes and a list of required maintenance tasks.

Required and Recommended Service Work

Details on periodic maintenance tasks categorized as required or recommended.

Tuning the Chassis

Chassis Setup - Basic Settings

Adjusting chassis settings based on rider weight and details on the air suspension system.

Shock Absorber Damping Adjustment

Adjusting low-speed compression damping of the shock absorber for the 50 SX FACTORY EDITION.

Shock Absorber High-Speed and Rebound Damping

Adjusting high-speed compression and rebound damping for the shock absorber.

Shock Absorber Spring Preload Adjustment

Procedure for adjusting the spring preload on the shock absorber.

Service Work on the Chassis

Using a Lift Stand

Instructions for raising and removing the motorcycle using a lift stand.

Bleeding Fork Legs

Procedure for bleeding air from the motorcycle's fork legs.

Cleaning Fork Dust Boots

Instructions for cleaning the dust boots of the fork legs to prevent seal damage.

Steering Head Bearing Play Check and Adjustment

Checking for and adjusting play in the steering head bearing for proper handling.

Brake System

Hand Brake Lever Adjustments

Checking and adjusting hand brake lever play and basic position.

Checking Brake Discs

Procedure for checking front and rear brake discs for thickness, damage, cracking, and deformation.

Checking Front Brake Fluid Level

Instructions for checking the front brake fluid level and identifying potential issues.

Front Brake Linings - Check and Change

Procedures for checking and changing the front brake linings.

Wheels, Tires

Front Wheel Removal and Installation

Step-by-step instructions for removing and installing the front wheel.

Checking Tire Condition

Guidelines for inspecting tires for wear, damage, and age.

Checking Tire Pressure

Procedure for checking tire pressure, ensuring correct inflation for safe riding.

Cooling System

Cooling System and Coolant Level Check

Overview of the cooling system and how to check antifreeze and coolant levels.

Coolant Level Check and Draining

Procedures for checking coolant level and draining the coolant from the system.

Tuning the Engine

Throttle Cable Play Check and Adjustment

Checking and adjusting the play in the throttle cable for optimal response.

Carburetor Idle Setting

Adjusting idle speed and mixture for both 50 SX and 50 SX MINI models.

Checking Clutch Setting

Procedure for checking the motorcycle's clutch setting and slip speed.

Adjusting the Clutch

Instructions for adjusting the clutch to achieve optimal slip speed.

Service Work on the Engine

Engine Oil Level and Oil Pump Bleeding

Checking engine oil level and bleeding the oil pump for the 50 SX MINI.

Checking Gear Oil Level

Procedure for checking the gear oil level in the engine.

Gear Oil Operations - Changing and Adding

Procedures for changing and adding gear oil to the engine.

Carburetor

Removing the Carburetor (50 SX MINI)

Step-by-step guide for removing the carburetor from the 50 SX MINI.

Removing the Carburetor (50 SX FACTORY EDITION)

Step-by-step guide for removing the carburetor from the 50 SX FACTORY EDITION.

Installing the Carburetor (50 SX MINI)

Procedure for installing the carburetor on the 50 SX MINI.

Cleaning, Care

Cleaning the Motorcycle

Guidelines for safely and effectively cleaning the motorcycle.

Motorcycle Cleaning and Maintenance

Completing motorcycle cleaning, lubricating moving parts, and protecting surfaces.

Storage

Motorcycle Storage Procedures

Steps for preparing the motorcycle for extended storage to prevent damage.

Preparing for Use After Storage

Steps to take to prepare the motorcycle for use after a period of storage.

Troubleshooting

Troubleshooting - Starting and Idle Issues

Diagnosing and resolving common issues when the engine won't start or has no idle speed.

Troubleshooting - Performance and Overheating

Diagnosing and resolving issues like poor speed, low power, stalling, and overheating.

Technical Data

Engine Specifications and Tightening Torques

Technical details of the engine, including specifications and tightening torque values.

Carburetor Tuning Data

Specifications for carburetor tuning, including settings for 50 SX and 50 SX MINI.

Capacities and Chassis Specifications

Details on fluid capacities and chassis dimensions and components.

Tire and Fork Specifications

Technical data for tires, including validity and specifications for the fork.

Substances

Brake Fluid Specifications

Information on recommended brake fluids, including standards and suppliers.

Gear Oil, Shock Absorber Fluid, Fuel, and Oil Mix

Specifications for gear oil, shock absorber fluid, fuel types, and 2-stroke oil mixture.

Auxiliary Substances

Air Filter, Chain Cleaner, Fuel Additive, and Grease

Recommended auxiliary substances for air filter, chain, fuel, and lubrication.

Grease, Cleaner, and Chain Spray

Recommended lubricants, cleaners, and sprays for motorcycle maintenance.

Standards

Industry Standards - JASO FD and SAE

Explanation of JASO FD classification for 2-stroke oil and SAE viscosity classes for oils.

List of Abbreviations

List of Abbreviations Used

An alphabetical list of abbreviations used throughout the manual.

Introduction

Introduction to the Booklet

Overview of the booklet's purpose, notes for parents, and additional information sources.

Part 1: Determining Your Youngster’s Readiness

Youngster Readiness Guidelines

Guidelines to help parents determine their youngster's readiness to ride an OHM.

Social/Emotional and Reasoning Abilities

Assessing youngster's social, emotional, reasoning, and decision-making skills for riding readiness.

Visual Perceptions and Motor Development

Evaluating youngster's visual abilities, coordination, and reaction time for riding.

Steps for Safe OHM Riding

Steps for parents to teach youngsters safe off-highway motorcycle riding techniques.

Part 2: Pre-Operating Procedures and Practice

Protective Gear and Clothing

Importance and selection of proper protective gear for young riders.

Mounting and Riding Posture

Procedures for mounting/dismounting and maintaining correct riding posture.

Mastering Motorcycle Controls

Teaching youngsters to identify and operate motorcycle controls safely.

Brakes and Throttle Control

Explaining brake operation, throttle control, and the engine stop switch.

Part 3: Operating Procedures and Practice

Learning Area Setup

Criteria for selecting a safe and suitable learning area for riding practice.

Getting the Feel of Brakes, Throttle, and Clutch

Teaching youngsters to feel the operation of brakes, throttle, and clutch.

Getting the Feel of Turning

Practicing proper turning techniques, including leaning and looking.

Starting Out and Stopping Practice

Practicing smooth clutch control for starting and mastering straight-line starts and stops.

Part 4: Readiness Checklist

Visual Perception and Motor Development Checklist

Checklist evaluating youngster's visual clarity, depth perception, side vision, and speed judgment.

Physical Development Checklist

Checklist assessing youngster's comfort, reach, strength, and familiarity with controls.

Social/Emotional Development Checklist

Checklist evaluating youngster's rule-following, obedience, and behavioral control.

Reasoning and Decision-Making Checklist

Checklist assessing youngster's understanding of consequences, risk, and decision-making.

Final Note to Parents

Final Note to Parents

Concluding advice for parents on teaching safe riding and further resources.

Glossary

Glossary of OHM Terms

Definitions of common terms related to Off-Highway Motorcycles (OHMs).

Glossary - Motorcycle Components and Riding Terms

Definitions of motorcycle components, riding terms, and abbreviations.