GAS GAS MC50 2021 User Manual

OWNER'S MANUAL 2021
MC 50
Art. no. 3215005en

GAS GAS MC50 2021 Specifications

General

Displacement	49 cc
Transmission	6-speed
Fuel Tank Capacity	3.5 l
Rear Suspension	Mono Shock
Starter	Kick Starter
Engine Type	Single-cylinder, 2-stroke
Cooling System	Liquid-cooled
Front Suspension	Hydraulic fork
Front Brake	Disc Brake
Rear Brake	Disc Brake
Bore x Stroke	39.5 x 40.0 mm

Summary

Means of Representation

Symbols Used

Explains the meaning of symbols used in the manual for understanding instructions and warnings.

Formats Used

Explains the typographical formats used in the document for clarity and emphasis.

Safety Advice

Use Definition – Intended Use

Defines the intended use of the motorcycle for racing in closed-off areas.

Misuse

Describes actions constituting misuse and the potential dangers.

Safety Advice

Provides essential safety instructions for operating the vehicle safely.

Degrees of Risk and Symbols

Explains hazard degrees (Danger, Warning, Caution, Note) and their associated symbols.

Tampering Warning

Warns against tampering with the noise control system and its legal implications.

Safe Operation

Details safe operating practices, including dangers of accidents and poisoning.

Protective Clothing

Emphasizes the importance of appropriate protective clothing for safety.

Work Rules

Outlines rules for performing work on the vehicle, including tool usage and part replacement.

Environment

Advises on responsible motorcycle use and environmental awareness, including fluid disposal.

Owner's Manual

Stresses the importance of reading, keeping, and handing over the owner's manual.

Important Notes

Manufacturer Warranty, Implied Warranty

Details warranty conditions, including voiding clauses for tampering or unauthorized modifications.

Fuel, Auxiliary Substances

Covers safe handling and environmental considerations for fuel and auxiliary substances.

Spare Parts, Accessories

Advises on using only approved spare parts and accessories for safety.

Service

Explains the importance of proper service, care, and tuning for vehicle longevity.

Figures

Notes that manual figures may depict special equipment not part of standard supply.

Customer Service

Informs about where to find authorized dealers for questions and service.

View of Vehicle

View of Vehicle, Front Left (Example)

Shows a diagram identifying key components on the front left of the vehicle.

View of Vehicle, Rear Right (Example)

Shows a diagram identifying key components on the rear right of the vehicle.

Serial Numbers

Vehicle Identification Number

Identifies the location of the vehicle identification number (VIN).

Type Label

Identifies the location of the vehicle's type label.

Engine Number

Identifies the location of the engine number.

Fork Part Number

Identifies the location of the fork part number.

Shock Absorber Article Number

Identifies the location of the shock absorber article number.

Controls

Hand Brake Lever

Explains the location and function of the hand brake lever.

Throttle Grip

Explains the location and function of the throttle grip.

Stop Button

Explains the location, function, and possible states of the stop button.

Opening the Fuel Tank Filler Cap

Details the procedure for opening the fuel tank filler cap with safety warnings.

Closing the Fuel Tank Filler Cap

Details the procedure for closing the fuel tank filler cap, including routing the breather hose.

Fuel Tap

Explains the location and possible states (open/closed) of the fuel tap.

Choke

Explains the location, function, and states of the choke lever.

Kick Starter Lever

Explains the location and function of the kick starter lever.

Foot Brake Lever

Explains the location and function of the foot brake lever.

Plug-in Stand

Explains the location and function of the plug-in stand.

Preparing for Use

Advice on Preparing for First Use

Provides essential advice for initial vehicle preparation and rider readiness.

Running in the Engine

Details the procedure for running in the engine, including performance limits.

Riding Instructions

Checks and Maintenance Measures When Preparing for Use

Lists crucial checks and maintenance tasks before operating the vehicle.

Starting the Vehicle

Describes the procedure for safely starting the vehicle's engine.

Starting Off

Explains how to start moving off safely after the engine is running.

Riding

Provides general riding advice, including throttle use and stopping the engine.

Applying the Brakes

Explains how to apply the brakes correctly and safely.

Stopping, Parking

Details the procedures for safely stopping and parking the motorcycle.

Transporting

Covers important considerations for transporting the motorcycle.

Refueling

Explains the refueling process, including safety precautions and fuel type.

Service Schedule

Additional Information

Provides general information related to service schedules and intervals.

Required Work

Lists mandatory maintenance tasks and their intervals.

Recommended Work

Lists recommended maintenance tasks for optimal vehicle performance.

Tuning the Chassis

Checking the Basic Chassis Setting with Rider's Weight

Guides on adjusting suspension settings based on rider weight for optimal handling.

Air Suspension XACT 5235

Details the features and operation of the WP XACT 5235 air suspension system.

Compression Damping of the Shock Absorber

Explains the two ranges of shock absorber compression damping: high-speed and low-speed.

Adjusting the Low-Speed Compression Damping of the Shock Absorber

Provides instructions for adjusting the shock absorber's low-speed compression damping.

Adjusting the High-Speed Compression Damping of the Shock Absorber

Provides instructions for adjusting the shock absorber's high-speed compression damping.

Adjusting the Rebound Damping of the Shock Absorber

Provides instructions for adjusting the shock absorber's rebound damping.

Measuring the Dimension of the Rear Wheel Unloaded

Explains how to measure the rear wheel's unloaded dimension.

Checking the Static Sag of the Shock Absorber

Guides on how to check the static sag of the shock absorber.

Checking the Riding Sag of the Shock Absorber

Guides on how to check the riding sag of the shock absorber.

Adjusting the Spring Preload of the Shock Absorber

Provides instructions for adjusting the shock absorber's spring preload.

Adjusting the Riding Sag

Guides on how to adjust the riding sag of the shock absorber.

Checking the Basic Setting of the Fork

Guides on how to check the basic setting of the fork.

Adjusting the Fork Air Pressure

Provides instructions for adjusting the fork's air pressure.

Adjusting the Rebound Damping of the Fork

Provides instructions for adjusting the fork's rebound damping.

Handlebar Position

Explains the different handlebar mounting positions available.

Adjusting the Handlebar Position

Provides instructions for adjusting the handlebar position.

Adjusting the Seat Height

Provides instructions for adjusting the vehicle's seat height.

Service Work on the Chassis

Raising the Motorcycle with a Lift Stand

Guides on safely raising the motorcycle using a lift stand.

Removing the Motorcycle from the Lift Stand

Guides on safely removing the motorcycle from a lift stand.

Bleeding the Fork Legs

Provides instructions for bleeding the air from the fork legs.

Cleaning the Dust Boots of the Fork Legs

Guides on cleaning the dust boots and inside fork tubes of the fork legs.

Removing the Fork Protector

Provides instructions for removing the fork protector.

Installing the Fork Protector

Provides instructions for installing the fork protector.

Removing the Fork Legs

Provides instructions for removing the front fork legs.

Installing the Fork Legs

Provides instructions for installing the front fork legs.

Removing the Lower Triple Clamp

Provides instructions for removing the lower triple clamp assembly.

Installing the Lower Triple Clamp

Provides instructions for installing the lower triple clamp assembly.

Checking the Steering Head Bearing Play

Guides on how to check for play in the steering head bearing.

Adjusting the Steering Head Bearing Play

Provides instructions for adjusting the steering head bearing play.

Lubricating the Steering Head Bearing

Provides instructions for lubricating the steering head bearing.

Removing the Fuel Tank

Provides instructions for safely removing the fuel tank.

Installing the Fuel Tank

Provides instructions for installing the fuel tank.

Removing the Start Number Plate

Provides instructions for removing the start number plate.

Installing the Start Number Plate

Provides instructions for installing the start number plate.

Removing Front Fender

Provides instructions for removing the front fender.

Installing the Front Fender

Provides instructions for installing the front fender.

Removing the Shock Absorber

Provides instructions for removing the rear shock absorber.

Installing the Shock Absorber

Provides instructions for installing the rear shock absorber.

Removing the Seat

Provides instructions for removing the vehicle seat.

Mounting the Seat

Provides instructions for mounting the vehicle seat.

Removing the Air Filter

Provides instructions for removing the air filter.

Installing the Air Filter

Provides instructions for installing the air filter.

Cleaning the Air Filter and Air Filter Box

Provides instructions for cleaning the air filter and its box.

Removing the Main Silencer

Provides instructions for removing the main silencer (exhaust).

Installing the Main Silencer

Provides instructions for installing the main silencer (exhaust).

Changing the Glass Fiber Yarn Filling of the Main Silencer

Guides on changing the glass fiber yarn filling in the main silencer.

Removing the Engine Sprocket Cover

Provides instructions for removing the engine sprocket cover.

Installing the Engine Sprocket Cover

Provides instructions for installing the engine sprocket cover.

Checking the Chain for Dirt

Guides on checking the drive chain for dirt accumulation.

Cleaning the Chain

Provides instructions for cleaning the drive chain.

Checking the Chain Tension

Guides on checking the drive chain tension.

Adjusting the Chain Tension

Provides instructions for adjusting the drive chain tension.

Checking the Chain, Rear Sprocket, Engine Sprocket, and Chain Guide

Guides on checking the chain, sprockets, and chain guide for wear.

Adjusting the Chain Guide

Provides instructions for adjusting the chain guide.

Checking the Frame

Guides on checking the vehicle frame for cracks and deformation.

Checking the Link Fork

Guides on checking the link fork for damage, cracking, and deformation.

Checking the Throttle Cable Routing

Guides on checking the throttle cable routing and play.

Checking the Rubber Grip

Guides on checking the rubber grips for damage, wear, or looseness.

Additionally Securing the Rubber Grip

Provides instructions for additionally securing the rubber grip.

Brake System

Checking Play of Handbrake Lever

Guides on checking the free play of the handbrake lever.

Adjusting the Play of the Hand Brake Lever

Provides instructions for adjusting the play of the handbrake lever.

Adjusting the Basic Position of the Hand Brake Lever

Provides instructions for adjusting the hand brake lever's position.

Checking the Brake Discs

Guides on checking the thickness and condition of the brake discs.

Checking the Front Brake Fluid Level

Guides on checking the brake fluid level in the front brake reservoir.

Adding the Front Brake Fluid

Provides instructions for adding front brake fluid.

Checking the Front Brake Linings

Guides on checking the minimum thickness of front brake linings.

Changing the Brake Linings of the Front Brake

Provides instructions for changing the front brake linings.

Checking the Free Travel of the Foot Brake Lever

Guides on checking the free travel of the foot brake lever.

Adjusting the Free Travel of the Foot Brake Lever

Provides instructions for adjusting the foot brake lever's free travel.

Adjusting the Basic Position of the Foot Brake Lever

Provides instructions for adjusting the foot brake lever's basic position.

Checking the Rear Brake Fluid Level

Guides on checking the brake fluid level in the rear brake reservoir.

Adding Rear Brake Fluid

Provides instructions for adding rear brake fluid.

Checking the Brake Linings of the Rear Brake

Guides on checking the minimum thickness of rear brake linings.

Changing the Rear Brake Linings

Provides instructions for changing the rear brake linings.

Wheels, Tires

Removing the Front Wheel

Provides instructions for removing the front wheel.

Installing the Front Wheel

Provides instructions for installing the front wheel.

Removing the Rear Wheel

Provides instructions for removing the rear wheel.

Installing the Rear Wheel

Provides instructions for installing the rear wheel.

Checking the Tire Condition

Guides on checking the front and rear tires for damage.

Checking Tire Pressure

Guides on checking and correcting tire pressure.

Checking Spoke Tension

Guides on checking the tension of the wheel spokes.

Cooling System

Cooling System

Explains the basic function and components of the cooling system.

Checking the Antifreeze and Coolant Level

Guides on checking the antifreeze protection and coolant level.

Checking the Coolant Level

Provides instructions for checking the coolant level in the radiator.

Draining the Coolant

Provides instructions for draining the coolant from the system.

Refilling with Coolant

Provides instructions for refilling the cooling system with coolant.

Changing the Coolant

Provides instructions for changing the coolant in the system.

Tuning the Engine

Checking the Play in the Throttle Cable

Guides on checking the free play in the throttle cable.

Adjusting the Play in the Throttle Cable

Provides instructions for adjusting the throttle cable play.

Carburettor – Idle Speed

Explains the importance of carburetor idle speed for starting and operation.

Carburetor – Adjusting the Idle Speed

Provides instructions for adjusting the carburetor's idle speed.

Checking the Clutch Setting

Guides on checking the clutch setting and slip speed.

Removing the Clutch Cover

Provides instructions for removing the clutch cover.

Adjusting the Clutch

Provides instructions for adjusting the clutch.

Installing the Clutch Cover

Provides instructions for installing the clutch cover.

Service Work on the Engine

Checking the Gear Oil Level

Guides on checking the engine's gear oil level.

Changing the Gear Oil

Provides instructions for changing the engine's gear oil.

Adding the Gear Oil

Provides instructions for adding engine gear oil.

Carburetor

Removing the Carburetor

Provides instructions for safely removing the carburetor.

Installing the Carburetor

Provides instructions for installing the carburetor.

Cleaning, Care

Cleaning the Motorcycle

Provides instructions for cleaning the motorcycle, including safety precautions.

Storage

Storage

Details recommended measures for storing the motorcycle for extended periods.

Preparing for Use After Storage

Guides on preparing the motorcycle for use after it has been stored.

Troubleshooting

Engine Turns But Does Not Start

Lists possible causes and actions for engine starting issues.

Engine Has No Idle Speed

Lists possible causes and actions for lack of engine idle speed.

Engine Does Not Speed Up

Lists possible causes and actions for engine acceleration problems.

Engine Has Too Little Power

Lists possible causes and actions for reduced engine power.

Engine Stalls or is Popping into the Carburetor

Lists possible causes and actions for engine stalling or popping.

Engine Overheats

Lists possible causes and actions for engine overheating.

White Smoke Emission (Steam in Exhaust Gas)

Lists possible causes and actions for white smoke from the exhaust.

Gear Oil Exits at the Vent Hose

Lists possible causes and actions for gear oil leaks from the vent hose.

Water in the Gear Oil

Lists possible causes and actions for water contamination in the gear oil.

Technical Data

Engine

Provides technical specifications for the engine, including design and dimensions.

Engine Tightening Torques

Lists the specified tightening torques for engine components.

Carburetor with Carburetor Tuning

Details carburetor specifications and tuning parameters.

Capacities

Lists the capacities for various fluids and components.

Chassis

Provides technical specifications for the chassis components.

Tires

Lists specifications for the front and rear tires.

Fork

Provides technical specifications for the front fork.

Shock Absorber

Provides technical specifications for the rear shock absorber.

Chassis Tightening Torques

Lists the specified tightening torques for chassis components.