14
15
Adjusting the disc brake
How to use the extended nozzle adapter
If your tires are flat, remove the screw-on cap from the valve, and connect the extended nozzle adapter to the valve for
pumping up.
If the handlebar and its stem sway during riding, use the M5 hexagon wrench to tighten the screws on the folding
mechanism.
Adjust the handlebar
If the brake is too tight, use the M4 hexagon wrench to loosen the screws on the caliper, and slightly send back the brake cable
to shorten the exposed length, then tighten the screws. If the brake is too loose, loosen the screws, and slightly pull out the
brake cable to lengthen the exposed length, then tighten the screws.
Brake Cable
1. Deflate the inner tire first. Use a tool to press the core rod in the air valve so that air is discharged from the inner tire, and
use another hand to forcibly pinch the tire at different places to discharge more air.
2. Select a position far from the air valve on the outer tire, use two crowbars to prize up the outer tire by about 1/6 of the
circumference, and forcibly separate one side of the outer tire from the hub.
3. Find the air valve, and pull the air valve out of the air valve hole of hub. To pull out the air valve more conveniently, hold the
air valve of the inner tire, and pull the outer tire outwards slowly, lest the inner tire would be damaged. Remove the inner tire
from the position of air valve in sequence, and separate the inner tire finally.
Note: Wrap the pointed end of the crowbar with fiber cloth so that it will not damage the inner tire and coating of the hub.
1. Fill a small amount of air into the deflated inner tire till the inner tire is just bulged to look round.
2. Put the hub on the top of a desk. Pay attention to the direction when installing the outer tire. There is an arrow on the outer
tire, and it must be consistent with the forward direction of the wheel. Use one hand to hold the hub, and use the other hand
to insert one side of the outer tire in the hub groove.
3. Insert the air valve of the inner tire into the air valve hole. Insert the inner tire in the outer tire clockwise and in sequence.
Make sure that the air valve does not tilt. Then, insert the other side of the outer tire in the hub groove. Finally use a crowbar
to install the remaining tire lips in the hub groove. After installation, pinch the outer tire to check if the inner tire is pressed by
the tire lips of outer tire.
4. Inflate the inner tire to 15-20 PSI, and check the safety lines at two sides of the outer tire. Make sure that the distances from
the safety lines to the hub edge are consistent.
5. Finally inflate the inner tire to 45-50 PSI. Tighten the air valve cap. Then, the tire assembly is completed.
Note: Wrap the pointed end of the crowbar with fiber cloth so that it will not damage the inner tire and coating of the hub.
Remove the outer and inner tires
Note: Crowbars not included, and should be purchased separately.
Install the inner and outer tires
1
2
1
2
3
3
4
P S
I
20
40
60
80
10
0
120
P S
I
20
40
60
80
100
120
