RKS MC3 User manual

MC3
USER MANUAL
E-BIKE
www.rksmotor.eu

01
TABLE OF CONTENT
About Ths Manual
1. Why You Should Read Ths Manual?
2. Warnng, Important Safety Informaton
Dagram
1. Parts’ Dagram wth Parts Name
2. Wrng Dagram
Operatng Instructon
1. Important Notces
2. Rdng Mode
3. Rdng Safely.
4. Battery Chargng
5. Checkng the Battery Pack Before Frst Tme Use
6. Removng the Battery
7. Power Indcator
8. PAS (Pedal Assst System)
9. Throttle (If has)
10. Pedal Installaton
11. F E-B O F E-BHow to old the ike ( nly for olding ike)
12. Shfter (If has)
13. Deralleur System
14. Front Wheel-Quck Release
15. Brake Adjustment
16. Rear Carrer
17. Lght
18. Saddle Poston
Mantenance and Cleanng
FAQ
Servce & Mantenance Schedule
Problems and Remedy
About Dealer and Informaton Card

02
ABOUT THIS MANUAL
WHY YOU SHOULD READ THIS MANUAL
Ths manual s wrtten to help you to get the best performance, comfort,
enjoyment and safety when rdng your new E-Bke. The manual
descrbes specfic care and mantenance procedures that help protect
your warranty and ensure years of trouble free use. Please pay partcular
attenton to the secton on battery chargng and mantenance.
It s mportant for you to understand the features and operaton of your
new E-Bke so that you can get maxmum enjoyment wth maxmum
safety. By readng ths manual before you go on your first rde, you’ll know
how to get the most from your new E-Bke.
It s also mportant that your first rde on a new E-Bke be taken under a
controlled envronment, away from cars, obstacles and other cyclsts.
WARNING
Cyclng can be a hazardous actvty even under the best crcumstances,
Gvng Proper mantenance to your E-Bke s your responsblty as t
helps to reduce the rsk of njury. Ths manual contans many “Warnngs”
and “Cautons” concernng the consequences of falure to mantan or
nspect your E-Bke. Many of the Warnngs and Cautons say “you may
lose control and fall” Because any fall can result n serous njury or even
death, we do not repeat the warnng of possble njury or death whenever
the rsk of fallng s mentoned. Please note that those rsks are present.
Your E-Bke can provde many years of servce, fun and fitness-f you take
good care of t.
Understand the features of your E-Bke and become aware of the
challenges that you wll meet on the road. There are many thngs you can
do to protect yourself whle rdng. We wll offer many recommendatons
and safety tps throughout ths manual. The followng are those that we
beleve are the most mportant.

03
Always Wear a Helmet!
Helmets sgnficantly reduce the possblty and severty of head njures.
Always wear a helmet that comples wth your state laws when rdng the
E-Bke.
Check wth your local polce department for requrements n your
communty.
Do not wear loose clothng that can become tangled n the movng parts of
the E-Bke. Wear sturdy shoes and eye protecton. Also check your state
laws concernng other protectve wear that may be requred when rdng
the E-Bke.
Know Your E-Bke!
Your new E-Bke ncorporates many features and functons that have
never been bult nto a bcycle before. Read ths manual thoroughly to
understand how those features enhance your rdng pleasure and safety.
Rde Defensvely!
One of the most common cyclng accdents s that when the drver of a
parked car opens hs door nto a rder’s path.
Another common occurrence s when a car or another cyclst moves
suddenly nto your path. Always be aware of other vehcles around you.
Do not assume that drvers or other cyclsts see you. Get prepared to take
evasve acton or stop suddenly.
Make Yourself Easy To See!
Make yourself more vsble by wearng brght reflectve clothng. Keep
your reflectors clean and properly algned. Sgnal your ntentons so other
drvers and other cyclsts can notce your actons.
Rde wthn Your Lmts!
Take t slow untl you are famlar wth condtons that you encounter. Be
especally careful n wet condtons as tracton can be greatly reduced and
brakes less effectve. Never rde faster than condtons warrant or beyond
your rdng abltes. Remember that alcohol, drugs, fatgue and
nattenton can sgnficantly reduce your ablty to make good judgments
and rde safely.

04
Keep Your E-Bkes n Safe Condton
Check crtcal safety equpment before each and every rde.
Know the Law
Cyclsts are requred to follow traffic rules. Addtonally, some
communtes regulate the use of motorzed bcycles regardng mnmum
age requrements and necessary equpment. Check wth your local polce
department for specfic detals.
Correct Frame Sze
When selectng a new E-BIKE, the proper frame sze s a very mportant
safety consderaton. Most full szed bcycles come n a range of frame
szes. These szes usually refer to the dstance between the center of the
bottom bracket and the top of the frame seat tube.
For safe and comfortable rdng there should be a clearance of no less
than 1-2 nches between the gron area of the ntended rder and the top
tube of the bcycle frame, whle the rder straddles the bcycle wth both
feet flat on the ground.
The deal clearance wll vary between types of bcycles and rder
preference. Ths makes straddlng the frame when off the seat easer and
safer n stuatons such as sudden traffic stops. Women can use a men’s
style bcycle to determne the correct sze.

05
WARNING
Persons less than 16 years old (include 16 years old) are not allowed ride
e-bikes
for handle panel, it may vary from model to model, such as LCD and
LED panels in different design and function, and its user's manual may
be provided separately, accompanied with your bike.

06
Congratulatons
First of all, congratulation on your purchasing of our electric bicycle (or
pedelec), which is carefully designed and manufactured under strict
quality control according to the current European standard
EN15194:2017
Please read this instruction manual carefully and thoroughly before
riding, as it contains sufficient information, which is very important in
safety, maintenance and simple assembly. It is the owner's responsibility
for reading this manual before riding this bike.
The user's instruction manual includes two sections, one is mechanical
section, and another is electric section. This instruction is applied to the
electric bikes with following equipment:
For mechanical equipment:
•Derailleur/ Roller brake Derailleur/
• V-brake or disc brake
• Internal gear hub / Roller brake or coaster brake
• Internal gear hub / V-brake or disc brake
For mechancal equpment, an electrc bcycle dffers only slghtly from a
non-electrc bke.
For electrc equpment:
•The battery-pack wth rear carrer or on the down tube
•The motor n the rear or front wheel hub
•The controller on a box next to battery or ntegrated to the battery-
pack
•Operaton panel s nstalled to handle bar

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SECTION I
MANUAL FOR MECHANICAL PARTS
Contents:
1. Conditions for Riding This Electric Bicycles
2. Selection and Set-up
3. Safe Cycling and Safety Tips
4. Routine Maintenance Check and Lubrication
5. Assembly Instructions
1.Conditions for Riding this Electric Bicycles
This electric bicycle is designed for riding on a road or a paved surface where the tires do not
lose ground contact, and this electric bicycle must be under proper maintained according to
the instruction of this manual. The maximum weight of the rider and load is required to be less
than 200lb (or 90kg).
Warning: You are warned that you take the consequences such as personal injury, damage,
or losses if you breach the above conditions and in the meanwhile, the warranty will be void
automatically.
2. Selection and Set-up
2.1. Saddle and Handlebar Stem Adjustment
The seat can be easily moved either up or down. Adjust the seat to keep the rider's knee
maintaining a slight bend when his foot is in the lowest pedaling position(refer to fig. 3).
Handlebar stem is approximately on the same level as saddle or slightly lower. For some
more adjustment tips, please refer to fig. 4 as below:
Warning: If your seat post is not inserted up to the minimum
insertion mark, the seat post may break (refer to fig. 5)
Once the saddle is at the correct height, make sure the seat
post should be up to its minimum insertion mark.
Warning: handle stem minimum insertion mark on traditional
quill stems must not be visible above the top of headset.
If the stem is extended beyond the minimum insertion mark the
stem may break or weaken the fork steering tube.

0108
3. Safe Cycling and Safety Tips
3.1 Checking Points Before Riding
Before you ride your electric bicycle at any time, make sure it is in a safe
operating condition. Particular check the following items:
• Electric bicycles nuts, bolts, quick-release and parts are fastened tight
and no worn or damage;
• Riding position is comfortable; Steering is free with no excessive play;
• Wheels run true and hub bearings are correctly adjusted;
• Wheels are properly secured and locked to frame/fork; Tires
• are in good condition and inflated to correct pressure Pedals
• are securely tightened to pedal cranks
•Gears are correctly adjusted
•All reflectors are in position
After you have made any adjustment to your electric bicycle, check that all
nuts and bolts are securely tightened and cables are free from kinks and
fixed securely to the electric bicycles frame. Every six months, your
electric bicycle should be professionally checked to ensure that it is in
correct and safe working order. It is the responsibility of the rider to ensure
all parts are in working order prior to riding this electric bicycle.
3.2 Do Not When Riding
•Do not ride without wearing an approved helmet, which must meet
European/USA standard or the same effect (comply with the law, rule
or regulations in your local area);
• Do not ride on the same side of road as oncoming traffic;
• Do not carry a passenger unless the cycle is equipped to do so;
•Do not hang items over the handlebars to impede steering or catch in
the front wheel;
• Do not hold on to another vehicle with another hand; Do not ride too
close to another vehicle.
Warning of Wet Weather Riding: No brakes work as well under wet or
icy conditions as they do under dry conditions. The braking distance in
wet weather would be longer than those in dry, and you should take
special precautions to assure safe stopping. Ride slowlier than normal
and apply your brakes well in advance of anticipated stops.

09
Warning of Night Riding: we recommend you minimize the times you
ride after dark. If you have to be out on your electric bicycle at night, you
must comply with the relative law, rule or regulations in your local area,
using a headlight(white) and taillight(red) on your electric bicycle in
addition to the all-around reflectors fitted. For more safety, wear light
colored clothing with reflective stripes. Check that the reflectors are firmly
secured in the correct position and clean and not obscured. Damaged
reflectors must be replaced immediately.
4. Routne Mantenance Check and Lubrcaton
Warnng: As wth all mechancal components, the bcycle s subjected to
wear and hgh stresses. Dfferent materals and components may react to
wear or fatgue n dfferent ways. If the desgn lfe of a component has
been exceeded, t may suddenly fal possbly causng njures to the rder.
Any form of crack, scratches or change of colorng n hghly stressed
areas ndcate that the lfe of the component has been reached and t
should be replaced.
Warnng: It s mportant to use only genune replacement parts for
several safety-crtcal components.
To keep the electric bicycle functioning well, the following routine
maintenance and lubrication is necessary for you
Half Yearly - Remove and clean, lubrcate chan, deralleur gears and all
cables. Check and replace as requred.
NB - Wash cycle weekly wth warm soapy water and dry t by rubbng wth
a soft cloth

10
Warning: When the rim becomes part of the brake system (such as the
conditions of V-brake and caliper brake), it is very important to check the
rim wear monthly and adjust the brake shoes accordingly to make the
clearance at 1-1.5mm from the track of rim. The wear of rim may destroy
the braking and result in personal injury to the rider or others.

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5. Assembly Instructon
Here s some mportant nformaton for electrc bcycles assembly, whch
s very useful for your mantanng your electrc bcycle, and especally
helpful when you purchase our e-bkess whch s partly assembled and
packed n a carton.
Step 1: Preparation:
Take the electric bicycle and parts out of the carton and detach all parts
that are tied to the frame. Be careful not to scratch the frame or cut the tire
when removing the wrapping. And please do not rotate the handlebar
either until disassembly, otherwise it may break the cables. Then carefully
examine the carton for loose parts and make certain that no parts are left.
Step 2: Seat Assembly (refer to fig.7)
1. Loosen the seat clamp nuts(both sides)
2. Insert the seat post into the seat clamp. The seat post must extend at
least 1/4 inch(6-7mm) above the top edge of the seat clamp.
3. Re-tighten the seat clamp nuts on both sides(hand tight).
4. Push the seat post into the seat tube of the electric bicycle frame and
rotate the seat until the tip of the seat is directly above the top tube of the
frame.
THE SEAT POST MUST BE INSERTED INTO THE SEAT TUBE AT A
DEPTH WHERE THE MINIMUM INSERTION LINE IS NOT VISIBLE!!!

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5. Open the seat post quck release
lever(Fg. 8). Insert the seat post nto the
seat tube to a sufficent depth so that the
mnmum nserton lne s no longer showng.
6. When you are satsfied wth the heght of the seat post, close the seat
post quck release lever. The tghtness of the lever s adjusted by rotatng
the adjustment nut opposte the quck release lever. Turn the nut by hand
to adjust the tenson whle holdng the lever stable.
Step 3: Handlebar & Handlebar Stem Assembly(refer to fig. 9 and 10)
As an usual stuaton, n our factory, the handlebar have been pre-
assembled together wth brake levers, shfter levers and grps. Be sure
that the longer cable s fixed to the rght lever (rear brake) and shorter
cable to the left (front brake), or accordng to your local rule and practce
(Note: In some area, such as UK, the cables are requred to be arranged
n the opposte way).
Snce your cycle may be fitted wth an adjustable, a standard stem or an
A- head stem(refer to fig.9 ), you must always check that all the bolts are
tght before cyclng. Based on the stuaton of standard handlebar stem,
please follow the nstructon below:
1. Push the handlebar stem nto the fork tube (head of the frame ) to the
mnmum heght lne that s marked on the sde of the handlebar stem. It
mght be necessary to loosen the expender bolt so that the stem can slde
nto the fork tube, untl you get your desred heght of the handlebar stem

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2. Algn the handlebar stem wth the front wheel(see fig.10). Tghten
securely the expender bolt wth an adjustable wrench.
Note: Some models requre a 6mm allen key.(Tghtenng torque: 18N.m
or 14 footlbs.torque)
3. Loosen the handlebar clamp bolt and nut from the stem.
4. Poston the handlebar at the desred angle. Make sure that the stem s
n the center of the handlebar
5. Tghten securely the handlebar clamp bolt (Tghtenng torque: 18N.m
or 14 foot. lbs)
6. Be sure that your handlebar and stem assembles are properly tght
before rdng. The handlebar should not rotate n the stem. When you
straddle and grp the front wheel between your knees, the handlebar
should not be able to turn when you apply pressure horzontally. Refer to
(fig. 10)
Note: Under the stuaton of A-head stem, you make the smlar operaton
as the above. Compresson bolt tghtenng torque: 23N.m or 17 foot lbs.
torque; stem clamp bolt tghtenng torque: 12N.m or 9 foot. lbs
Step 4 Attachng Pedals(refer to fig. 11) :
1. The pedals are marked wth ether a “R” or “ L” on the threaded end of
the pedal axle.
2. Screw the pedal marked ”R” nto the rght sde of the crank assembly
(chan sde of electrc bcycles). Turn the pedal (by hand) n the clockwse
drecton. Tghten securely wth an adjustable wrench or the plate wrench
specal for pedals(Tghtenng torque: 34N.m or 26foot.lbs).
3. Screw the pedal marked “L” nto the left sde of the crank assemble.
Turn the left pedal (by hand) n the counterclockwse drecton. Tghten
securely wth an adjustable wrench or the plate wrench specal for
pedals(Tghtenng torque: 34N.m or 26foot.lbs).

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Step 5 Brake Adjustments
The brake on your electrc bcycle should have been adjusted correctly n
our factory, however, as cables do stretch, t s mportant to check the
adjustment of your brakes after your first rdng. Most brakes wll need
some adjustment after beng used a few tmes.
V-brake Adjustment(refer to fig. 12) :
a. Press the nner cable through the nner cable lead, and after settng so
that the total of the clearance between the left and rght shoes and the
rms s 2mm, tghten the cable fixng bolt, tghtenng torque: 6-8N.m or 5-
6foot.lbs .
b. Adjust the balance wth the sprng tenson adjustment screws.
c. Depress the brake lever about 10tmes as n normal brake operaton
and check that everythng s operatng correctly and that the shoes
clearance s correct before usng the brakes.
Note: If you are still failed to well adjust the V-brakes, we strongly
recommend it being done by professionals. If the distance between the
left/right shoes and the rims is more than 2mm after abrasion for a long
time, you need to replace the left and right shoes to ensure the safety.
Basic Disc Brake Adjustment
The notes that follows are not exhaustive. If you need further assistance,
please take your cycle to your local dealer or a professional cycle shop.
a.Brake Lever and Brake Pad Travel Adjustment

15
You can alter the amount of braking pressure
by altering the travel of the brake lever and by
the proximity of the brake pads to the brake
disc.
To alter the travel of the brake lever adjust
screw A (see fig. 13), unscrew screw A reduce
the amount of lever travel and by tightening it
increase the lever travel. If you have fully
unscrewed screw A and the lever travel is still excessive you will have to
adjust the space between the pads and the disc.
Tighten screw A (Fig.13) up to the brake level. Go to Fig.14 and insert an
allen key into the smaller hole inside allen key hole B. Rotating the allen
key clockwise pushes the outer brake pad forward by approx.0.8mm After
each turn, check the braking performance.
Once the correct amount of travel has been reached, centre the brake
Calliper on the disc by adjusting screw C(Fig.15).when the brake pads
are centered on the disc the wheel should spin freely, though there may
be a slight amount of noise until the pads “bed” in.
If your cycle came from, or has recently been overhauled by a
professional repair shop. you should be able to maintain good braking
performance by adjuster screw C ( refer to Fig.15)
Once the correct amount of travel has been reached, center the brake
caliper on the disc by adjusting screw C (fig.15). When the brake pads are
centered on the disc the wheel should spin freely, though may be a slight
amount of noise until the pad bed in.

16
b. Brake pad wear and replacement
When you check your brake pads due to fallng performance, check ther
thckness. If they are less than 1 mm (Fg. 16), they wll need replacng.
To fit new pads, remove the brake callper from the fork or frame by
unscrewng allen bolts D(Fg.17). Unscrew (ant-clock wse), the smaller
allen bolt nsde allen bolt B(Fg.14). Lft up and pull the nner pad
downward, usng the protrudng part. Slde a thn slot screwdrver under
the outer pad and lft t up. Hold the screwdrver n ths poston and
remove the pad wth a par of longnosed plers.
Remove the sprngs from the worn out pads and fit them onto the new
pads. Replace the new pads, keepng them slghtly nclned nto the seat
of the Calper. Check that the sprng hooks correctly onto the small
pston.(When pullng downwards the pads should not come out).Refit the
Calper to the fork or frame and adjuster screw C(Fg.15)untl the pads
and the dsc are centered and the wheel spns freely. Agan there may be
some nose from the brake untl t “bed” n.
Step 6 Deralleur Gears Mantenance and Adjustment
To ensure that your deralleur gear works efficently and to prolong ts lfe,
t must be kept clean and free from excessve drt bult up and should be
properly lubrcated.
Note: If the specfic nstructon manual s provded accompaned wth
your bke, please follow t.
Before Adjustment, please make sure of the followng detals:
•The rght shfter controls the rear deralleur and sprocket.
•The largest rear sprocket generate low gear for hll clmbng; the small
rear gear sprocket develop hgh gear ratos for speed work and

17
downhll rdng
•The small chan rng produce low gear ratos whle the larger front
chan rng produce hgh gear ratos
•To operate your deralleur gear system efficently and reduce
damage, wear and reduce nose to a mnmum, avod usng the
maxmum crossover gear ratos of large chan rng/large rear
sprocket, small chan rng/small rear sprocket
Note: For postve gear selecton, observe these four precautons
1. change only when pedals and wheels are movng n a forward moton
2. reduce pedal pressure whle changng gears
3. Never back pedal when changng gears
4. Never force the gear levers
Rear Deralleur Adjustments:
Move the shfter all the way forward (toward seat) and wth the chan on
the smallest rear sprocket and largest front sprocket, check for cable
slack at pont “B” . If there s slack, loosen the cable nut or screw, pull on
the cable end wth plers and retghten the cable nut or screw whle pullng
cable taut(tghtenng torque: 5-7N.m or 4-5foot.lbs)
Top Adjustment
Turn the “H” adjustng screw(or top rear adjustment screw) on the gear
mechansm so that, lookng from the rear, the gude pulley s below the
outlne of the top gear.
Low Adjustment
Turn the “L” adjustng screw (or low gear adjustment screw) so that the
gude pulley moves to a poston drectly below the low gear
1. operate the shftng lever to shft the chan from top gear to 2nd gear.
•If the chan wll not move to the 2nd gear, turn the cable adjustng
barrel to ncrease the tenson 1(counter clockwse)
•If the chan moves past the 2nd gear, decrease the tenson
2(clockwse)
2. Next, wth the chan on the 2nd gear, ncrease the nner cable tenson
whle turnng the crank forward. Stop turnng the cable adjustng barrel
just before the chan make nose aganst the 3rd gear. Ths complete the
adjustment Be sure to perform ol mantenance at each part of the transfer

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mechansm. The optmum ol s dry molybdenum ol or the equvalent.
Step 7: Tghten the front and rear hubs nuts securely.(Tghten torque:
about 30 N.m for front wheel, about 25 to 30 N.m for rear wheel )Before
rdng, lft the front of the bcycle so that the front wheel s off the ground
and gve the top of the tre a few sharp downward strkes. The wheel
should not wobble or come off.
Step 8: Inner gear adjustment, please refer to the attachment copy nsde
bke carton.