B'Twin Bicycle User Manual - page 4
4
max
min. insertion
Insert seat post into seat tube. Adjust height of seat tube in accordance with user
height. The minimum insertion marker must never be visible above the seat tube.
To determine the correct seat height, sit on the bike and place your heel on the pedal
in the lowest position with the crank parallel to the seat post. The seat is the correct
height when your leg is fully extended.
- How to measure and adjust height of handlebars to suit user (see chart at end of instructions).
Insert stem into pivot tube. Adjust height of stem, depending on user
height, ensuring that you do not go beyond the minimum insertion
marker or as far as the stop.
Going beyond the minimum insertion marker constitutes product misuse
and may place the user in danger.
Headset stem:
All MTBs fitted with aheadset stems are sold with setting rings.
The handlebar height suggested in the shop is the highest.
If you would prefer to raise the handlebar position, you will
need to choose a higher stem.
Adjusting aheadset stems on your bicycle:
To reduce the height you need to use appropriate tools (T-bars 5 or 6 depending on the model - see tools chapter).
- Completely unscrew screw A, then the two B screws in the stem.
- Remove the stem.
- Take 1 or more setting rings.
- Replace the stem.
- Replace the setting rings above the stem.
- Tighten up screw A and tighten the B screws.
Checking that aheadset stems are properly fitted to your bicycle:
To check the adjustment of your stem, close the front brake and rock forwards and backwards on
your bicycle. If you feel any movement in the steering system, tighten up screw A.
Second check: lift the front of the bicycle off the ground and turn the handlebars from side to
side. If it's hard to turn the handlebars, unscrew the screw A. I
f this procedure seems too complex, please ask the staff in the workshop at your nearest shop.
- Brake adjustment and use
Before every ride, check that the front and back brakes are in perfect working order.
The front brake is controlled by the left brake lever (right brake lever in certain countries such as India, China and England).
The rear brake is controlled by the right brake lever (left brake lever in certain countries such as India, China and England).
The brakes are a key safety mechanism for the cyclist. They must be checked before every ride and regularly maintained and
adjusted.
You can adjust the brake system as follows:
Brake pads
1/Check the pad is aligned with the edge of the rim.
2/ Check the distance of the pads from the rim (1 to 3 mm for optimum braking).
3/ Always distance the rear of the pads slightly from the rim.