Testing Seat Clamp And Post Clamp Tightness; Handlebar/Stem - Dynacraft BMX Owner's Manual

3. TESTING SEAT CLAMP AND POST CLAMP TIGHTNESS

After installing the seatpost into the bicycle and tightening either the quick release clamp or
the standard clamp, test the tightness of the saddle. Hold the saddle firmly with both hands
and try to move it side to side. The seatpost should not move at all. The seatpost and saddle
also should not move when the rider is seated.
Make sure the seat clamp nuts at the top of the seatpost are tight so that the seat does not tip
forward or backwards.

4. HANDLEBAR/STEM

WARNING:
To prevent steering system damage and possible
loss of control, the stem must be inserted enough so that the minimum
insertion marks are completely covered. (See Figure 1.)
Add some white grease to the inside of the fork steer tube. Remove
the plastic shipping cap from the bottom of the stem (see Figure
2). Insert the stem and handlebar assembly into the fork, making
sure the stem wedge is loose (see Figure 3). Make sure the cables
are not tangled and track smoothly on either side of the stem. The
stem should be pointing towards the front of the bike. Tighten the
stem bolt with an adjustable wrench or Allen wrench depending on
which style comes on your bike (see Figure 4). Make sure the stem
is aligned with the front tire of the bike.
If your bike is equipped with a threadless stem, it will be pre-
installed on the bike. Simply remove the handlebar bolt(s) in order
to attach the handlebars. Make sure to re-tighten the bolts evenly, a
little at a time. For 4 bolt stems, tighten in a cross pattern as shown
in Figure 2 on next page.
Minimum
insertion
mark
1
3
C
Remove
cap
2
4
16