The document provides instructions for basic bicycle operations and maintenance. It covers choosing the correct bicycle size and adjusting the seat height. It also describes how to remove wheels, change an inner tube, and rethread the chain. Regular maintenance like checking tire pressure and lubricating parts is recommended. Safety checks of brakes and general inspections for wear are important whenever using the bicycle.

1. Basic operations with
your bicycle

2. Choosing the right size of the
bicycle:
Right size bicycle Ride it properly Avoid problems
Your left foot ground Left your right knee upwards and forwards
Check the size of the space between your knee,handlebars should be about the
width of your hand.

3. Adjusting the seat
1.Legs ,fully extended when you are pedalling
2. Your feet at the closest point to the ground
3.Avoid knee injuries
4.Adjust your bicycle properly:
4.1 Ask someone to help you
4.2 Heel of your foot on the pedal and extend your legs completely
4.3 Adjust the seat .When you pedal ,your legs will not be completely extended
4.4 Make sure you sit correctly so you are not higher or lower than the needed.

4. Taking off the wheels
Sometimes ,you will need to remove the front wheel of your bicycle:
1. Disconnect the brake system.If you have a disc system ,don´t use the handle
after you remove the front wheel.
2. Loosen the nuts on the front axle. If your front wheel has got quick release
system, turn the lever.
3. Lift the front of the bicycle and the front wheel should fall out
4. If you need to remove the back wheel select the highest gear,the chain be on
the smallest sprocket.Then remove the chain and take off the back wheel

5. Changing an inner tube
1. Deflate the inner tube completely
2. Lift up one edge of the tyre ,starting with the valve ,using tyre levers
3. Leave the tyre on the rim and remove the inner tube
4. Check the rim and the tyre for any sharp objects
5. Partially inflate the new inner tube and put it inside the tyre. Start with the
valve
6. Put the tyre back on the rim.
7. Make the valve in the correct position. Inflate the inner tube ,put the wheel
back on the bicycle.

6. Rethreading the chain
To put the chain back onto the chain wheels:
1. Put the chain on the lower part of the smallest sprocket
2. Lift the back wheel and pedal backward. Thread the chain onto the sprocket
3. Pedal forward until the chain is completely connected to the gear wheel

7. WHENEVER YOU USE YOUR BIKE:
● Check tyres and air pressure. You might have a flat or a slow leak.
● Check your brakes. They ensure your safety of the other people
● Check the lubrication of the chains and gears. In wet areas or in summer , the
parts can rust or rub produce friction and ecentually break

8. Every month ,if you use your bike regularly:
● Check the cables
● Check the air pressure of tyres.The proper pressure is printed on the side of
tyre .You should carry an air pump and a repair kit
● Check the chain wheels and sprockets.
● Check the lubrication of all the moving parts and all the places where there is
friction
● If your bicycle has got an air or hydraulic suspension system ,you should
check the suspension pressure
● Check the tyres for any problems
● There should be all the nuts and bolts on your bicycle
● Check if in the frame are there any cracks or stress marks.
And the MOST IMPORTANT thing is to keep your bicycle clean

9. THANKS FOR YOUR ATTENTION AND GOOD
BYE