Handlebar And Saddle Alignment; Quick Releases - RIDLEY Bicycle Use And Maintenance Booklet

4.3.3. Brakes
Squeeze the brake levers. Are the brake quick releases closed? Is
the straddle cable securely engaged? Are the brake shoes
contacting the wheel rim within an inch of brake lever movement?
Can you apply full braking force at the levers without having them
touch the handlebar? If not, your brakes need adjustment. Do not
ride the bike until the brakes are properly adjusted. See Sections
6.3.1 and 6.3.2 for details.
WARNING: Riding with improperly adjusted brakes or worn brake
shoes is dangerous and can result in serious injury or death.
4.3.4. Chain
For single speed/fixed gear bicycles, does the chain have enough
tension? To check, push up on the bottom of the chain. There
should be ¼ to ½ inch (6-12mm) vertical chain movement.
WARNING: Riding with too little chain tension can cause the chain
to come off of the chain ring or sprocket, which can cause damage to
the bicycle and cause you to lose control and fall.

4.3.5. Quick Releases

Are the front wheel, rear wheel and seat post quick releases properly
adjusted and in the locked position? See Section 6.1 and 6.2 for
details.
WARNING: Riding with an improperly adjusted wheel quick release
can cause the wheel to wobble or disengage from the bicycle, which
can cause damage to the bicycle and serious injury or death.

4.3.6. Handlebar and saddle alignment

Are the saddle and handlebar stem correctly parallel to the bike's top
tube and tight enough so that you can't twist them out of alignment?
If not, tighten the stem, handlebar, seatpost and saddle bolts and
quick release.
4.3.7. Handlebar ends/extensions
Are the handlebar grips secure and in good condition? If not, replace
them. Are the handlebar ends and extensions plugged? If not, plug
them before you ride. Are the bar ends or extensions tight enough
that you cannot twist them? If not, tighten them.
WARNING: Loose or damaged handlebar grips or extensions can
cause you to lose control and fall. Unplugged handlebars or
extensions can cut your body and can cause serious injury in an
otherwise minor accident.
WARNING: Handling and braking control can be adversely affected
by using handlebar ends or extensions, which can cause you to lose
control and fall. Take extreme care when using handlebar
ends/extensions.
OK: now buckle on your helmet (see page 15) and enjoy your ride.
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