DYU A9 User manual

Do not use this product without carefully reading this instruction manual
and understanding the performance of electric bicycles
Please keep the instruction manual properly
DYU SMART ELECTRIC BIKE A9
INSTRUCTION

Gears
Derailleur System
Some of NAKTO E-Bike go with gears, which consists of:
•A rear sprocket cluster, called a freewheel or cog set
•A rear derailleur
•One swifter
•One control cable
•One front sprocket called a chaining
•A drive chain
There are many different types of swifter mechanisms, each preferred for specific
Applications because of its ergonomic, performance and price characteristics.
A downshift is a shift to a lower or lower gear, one which is easier to pedal. An upshift is a shift to a higher or
faster gear, one which is harder to pedal. For example, you can downshift to a lower gear to make pedaling
easier on a hill.
On the other hand, you may upshift to a higher gear when you wish to go faster.
Whether up-shifting or downshifting, the derailleur system requires that the drive
Chain be moving forward and be under at least some tension. A derailleur will
Shift only if you are pedaling forward.
Caution:__________________________________________________
Never move the swifter while pedaling backward. Also do not pedal backwards after moving the swifter.
Either of these actions could jam chain and cause serious damage to the E-Bikes.
The derailleur system includes the front and rear derailleur, the shift
levers,
and the derailleur control cables, all of which must function properly
for smooth gear
shifting to occur.
Derailleur
Although the front and rear derailleur are initially adjusted in our
factory, you will
need to inspect and read just both before riding bicycle.
Rear Derailleur
Begin by shifting the rear swifter to largest number indicated, loosen
the cable from the rear derailleur cable anchor bolt, and place the
chain on the smallest sprocket.
Adjust the high limit screw so that the guide pulley and the smallest
sprocket are lined up vertically. Re-tighten the cable, pull out any
slack, and re-tighten the anchor bolt securely. Shifting through the
gears, making sure that each gear is achieved quietly and without
hesitation. If necessary, use the barrel adjuster to fine tune the cable
tension by turning it the direction you want the chain to go. For
example, turning clockwise will loose the cable tension and move the
chain away from the wheel, while turning counter-clockwise will
tighten cable tension and direct the chain to the wheel.

Adjusting nut
Adjusting nut
Tighten
Loosen
I . Quick-release mechanics
A quick-release adjusts the clamping force via the adjusting nut. Turn the nut clockwise to tighten,
and counter-clockwise to loosen.
。
When the adjusting nut is turned clockwise for the quick-release lever to be in the CLOSE position, the nut moves
inwards and clamps the wheel against the frame, thus holding the wheel firmly in the correct location.
Quick-release lever
OPEN
CLOSE
Installing Front Wheel
II . How to install
1.Mount the quick-release hub firmly
Set the quick-release lever in the OPEN position, and insert the wheel all the way into the
dropout slots of the front fork.tt
Correct Wrong
2. Tighten the nut clockwise
Slowly turn the adjusting nut clockwise with your left hand, while opening and closing the quick-release
lever with your right hand. Stop tightening the nut when the lever is in parallel with the hub (shown below)
and resistance is felt from the lever.
3. Secure the quick-release lever
Hold the fork legs with your fingers, and use your palm to apply sufficient force onto the quick-release lever to
secure it. The CLOSE mark on the lever should face outwards. The lever should be ahead of the fork leg or in parallel
with it as shown below.
Turn 1/8 of a
circle each time
Adjusting nut

DYU E-bike Owners Group
Manufacturer: Shenzhen DYU Intelligent Mobility Technology Co., Ltd
website: www.dyucycle.com