GAS GAS MC Boy 50 Bedienungsanleitung

MANUAL DEL USUARIO

USER MANUAL

MANUEL D’ENTRETIEN

LIBRETTO D’USO

BETRIEBSANLEITUNG

ENGLISH

USER MANUAL

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ACKNOWLEDGEMENTS TO THE PURCHASER

GAS GAS thanks you for the trust you have placed in us.

We are delighted that you have selected the MC Boy 50 / EC Boy 50 motorcycle and we would

like to welcome you to the GAS GAS family.

Get to know your new machine well. This bike incorporates our accumulated competition experience

and that which we have gained from the achievement of many important titles.

You now possess a motorcycle with which, as well as feeling comfortable, you are offered the

infinite possibilities of driving at the highest level of your skill while maintaining a maximum of

security.

This manual provides you with a good basic knowledge of the features and machine handling. It

also contains many important instructions regarding safety and provides information about the

basic maintenance and inspection procedures.

Thank you for your trust in us, and welcome to GAS GAS motorbikes.

GAS GAS MOTOS, S.A.

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Important warning

Read this Manual carefully. It contains all the necessary information for your safety, and that of

others, as well as guaranteeing the correct conservation and maintenance of the GAS GAS

motorcycle you have just acquired.

All of the necessary instructions for the correct driving and handling of this vehicle are set out

below. Each message is preceded by a symbol whose meaning is as follows:

Caution! This symbol indicates all of the rules and precautionary measures that must be

taken in order to avoid any physical injury, serious or slight, including death of the user;

to ignore these represents a serious danger.

Warning! This symbol introduces special warnings to avoid damage to your motorcycle.

Should these warnings be ignored, the guarantee may be automatically invalidated.

Miscellaneous notes. These are instructions necessary for optimum use of control and

adjustment operations, as well as conservation and maintenance work on the motorcycle,

so that you may benefit from a maximum of driving satisfaction.

The aim of this Manual is to help the user minimise or avoid possible damage to people,

property, the environment, and naturally to your new motorbike. Therefore, all the information

presented here is based on data obtained from the latest models put on the market just before

publication. However, GAS GAS Motos, S.A. reserves the right to make modifications without any

prior warning to consumers and without incurring any additional obligations in so doing. Your local

dealer will also provide you with any information as might be deemed necessary.

-5-

Index

Acknowledgements to the purchaser 3

Important warning 4

Index 5

Quick Guide to Maintenance 6

Fuel - Petrol/oil mixture 7

Fuel tank 7

Fuel tap 8

Before starting the engine 8

Starting the engine 9

Stopping the engine 9

Riding the motorcycle 10

Stopping the motorcycle 10

Running-in period 11

Transmission oil - Checking the level 11

-Filling 12

-Changing 12

MC Boy 50 cooling system - Checking/filling 13

EC Boy 50 cooling system - Checking 13

Carburettor - Adjusting throttle cable 14

- Adjusting idle speed 14

Spark plugs - Inspecting 15

Air Filter - Cleaning 15

Front brake fluid - Checking 16

Rear brake fluid - Checking 16

Front brake lever - Adjusting 16

Rear wheel - Centre alignment 17

Chain slack - Checking 17

Master link - Checking 17

Tyre pressures - Checking 18

Brake pads - Checking 18

Brake circuit - Bleeding 19

Front fork - Oil level 19

Lubrication 20

Identification 21

Guarantee manual 22

Specifications

EC Boy-50 MC Boy-50

49.38 / 5 49.38 / 12

1 (one)

39 x 41.8 mm

Air Liquid

Electronic with variable advance

Automatic

Single gear

Primary by gears,

Secondary by chain

250 cc of SAE 20 oil

CHASSIS

Deltabox, elliptic profile tubes in CRMo, aluminium rear swingarm

Marzocchi hydraulic fork - 140 mm

Single-shock absorber Sachs - 155 mm stroke

Disk, 160 mm diameter, AJP calliper

Disk, 150 mm diameter, AJP calliper

Duralumin wheels

2.5 - 14" 2.5 - 10"

2.75 / 3.00 - 12 2.75 - 10"

Forged aluminium with retractable toecap

Dell'Orto 19 mm diameter carburettor with

polyurethane sponge filter diffuser

Dell'Orto 14 mm diameter carburettor with

polyurethane sponge filter diffuser

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Description

Displacement / power cc/CV

Type

Number of cylinders

Bore and stroke

Cooling system

Engine lubrication system

Engine supply system

Ignition system

Clutch

Gear changes

Transmission

Transmission lubrication system

Type

Front suspension

Rear suspension

Front brake

Rear brake

Wheels

Tyres

- Front

- Rear

Kick-start pedal

Shift pedal and rear brake

ENGINE

Two-stroke single cylinder, layer admission directly to crankcase

2% mixture ratio

Forged aluminium

Quick guide to maintenance

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Fuel – Petrol/oil mixture

The motorcycle is fitted with a two-stroke internal

combustion engine. This type of engine requires a

mixture of petrol and oil.

To ensure the correct working of the engine, the following are

recommended:

- Use high quality petrol, with an octane rating equal to or

above 90 (RON + MON)/2 or 98 (RON).

- Use 2T synthetic oil.

Warning:

- If the recommended oil is not available, use semi-synthetic oil.

- Do not mix different oil-types.

Mixture ratio: oil, 2% of petrol volume (50 parts petrol to every 1

part oil).

Note: we recommend first preparing the mixture in a suitable

container and then filling the fuel tank.

Fuel tank

This has a rapid access cap (A) and a vent hose (B) to allow

gases produced in the tank to escape.

- To open the cap, lift the clip in the direction shown by the arrow

and turn to the left.

Warning: Regularly check the cap seal and vent hose to ensure

they are leak proof. Risk of spillage.

Before starting the engine

- Open the fuel tap.

Note:

- If the engine is cold then pull the

choke upwards (A) and, then, rotate it 1/4of

a turn to the left or the right to secure it in place.

Once the engine is turning over regularly at

idle speed, return the choke (A) to the rest

position.

- Do not use the choke on hot days or when

the engine is hot.

In this case, hold the throttle lever partially

open until the engine starts.

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Reserve Open Closed

Fuel tap

This has three positions: open,

closed and reserve.

The diagrams below show the

position of tap (A) for each case.

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