FOUR > TECHNICAL INFORMATION
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4.2 SEATPOST QUICK RELEASE
The seat post quick release clamp works exactly like the front wheel
quick release (see Section 4.1.1). While a quick release looks like a
long bolt with a lever on one end and a nut on the other, the quick
release uses a cam action to firmly clamp the seat post.
WARNING: Riding with an improperly tightened seat
post can allow the seat to turn or move and cause you to
lose control and fall.
Therefore, it is essential that you:
✔ Ask your dealer to help ensure that you know how to correctly
clamp your seat post.
✔ Understand and apply the correct technique to clamp your seat
post quick release.
✔ Check to see that the seat post is correctly mounted before every ride.
ADJUSTING THE SEAT POST QUICK RELEASE MECHANISM
The quick release cam squeezes the seat collar around the seat post
to hold the seat post securely in place. The tension-adjusting nut
controls the amount of clamping force. Turning the tension-adjusting
nut clockwise while keeping the cam lever from rotating increases
the clamping force; turning it counterclockwise while keeping the
cam lever from rotating reduces clamping force. Less than half a turn
of the tension-adjusting nut can make the difference between safe
and unsafe clamping force.
CAUTION: Holding the nut with one hand and turning the
lever like a wing nut with the other hand until everything is as
tight as you can get it will not clamp the seat post securely. The
full force of the cam action is needed to clamp the seat post
securely.
CAUTION: If you can fully close the quick release without
wrapping your fingers around a frame tube for leverage and the
lever does not leave a clear imprint in the palm of your hand, the
tension is insufficient. Open the lever, turn the tension-adjusting
nut clockwise a quarter turn and then try again.
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