Mortch Natty User manual

NATTY
User’s Manual
Mortch International Ltd

Preface
Thank you very much for purchasing our scooters. And welcome to join the driver’s line of MORTC motorcycle.
With its extraordinary advantages of excellent quality, smart appearance and shape of legerity, our product will surely
bring the utmost pleasure and convenience to your life.
This manual gives you information about the general structure, function, operation and maintenance methods of
NATTY. In order to enable your beloved motorcycle to render a best performance and a longer life, please read this
manual carefully, pay particular attention to the running-in part in it and follow all the operating instruction. It is of great
importance to make your riding safer and more comfortable. Experienced staffs in our sale agency and the
maintenance shop will also offer excellent service for you.
● Please take an initial examination of your motorcycle after the first 300km running in our designated maintenance
shop, and take regular examination in every 1000km thereafter.
● All the direction, illustration and specification included in this manual are based on the latest product information.
Please be noted that they may be different from the actual status of the motorcycle if there is new revision on its
specification, and no further advice will be given.
● This motorcycle was designed and manufactured which complied with e-mark, the safety standard of Europe
Union, the maximum speed is 25 km/h. Please do NOT change any parts without professional advice and use
non-original parts in case of avoiding danger to driver and the broken of traffic laws.
Mortch International Ltd
http://www.mortch.com

CONTENTS
Guidance ………………………………………………………………………………………… 1
Position of parts ……………………………………………………………………………………… 3
Controlling parts …………………………………………………………………………………… 4
Starting pedal ……………………………………………………………………………………… 6
Fuel tank ………………………………………………………………………………………… 6
Fuel and engine oil …………………………………………………………………………………… 6
Pre-riding inspection ………………………………………………………………………………… 7
Engine starting ……………………………………………………………………………………… 8
Regular maintenance ………………………………………………………………………………… 10
Tools …………………………………………………………………………………………… 16
Technical Parameters ……………………………………………………………………………… 17
Electrical Circuit Chart ……………………………………………………………………………… 19
Mortch International Ltd
http://www.mortch.com

1
□
□□
□Guidance
Please keep safety in your mind and observe the regulations of transportation while enjoying your riding. Pay attention to
the following rules:
1. Pre-riding inspection
Please read the details in the relevant chapter for your safety.
2. Helmet
Do remember to wear helmet while riding.
3. Being amiliar with motorcycle operation
It is of great importance to ensure your safety getting
familiar with motorcycle operation.
4. Speed limitation
Drive at proper speed in accordance with the road condition,
the weather and your driving skill.
WARNING
It is dangerous to drive on the wet road.
Do not make an abrupt turning while
accelerating and keep proper distance
from other vehicles.
Mortch International Ltd
http://www.mortch.com

2
139QMB
XXXXXXXXX
☆☆
5. Positions o the numbers
The frame number and the engine number are for
the purpose of registering the motorcycle. When your
motorcycle needs inspection, repair or other special
service, the number will enable you to get good service
from our sale agency. Please note down the number
here:
□
□□
□ The rame number:
□
□□
□ The engine number:
frame number
Mortch International Ltd
http://www.mortch.com

3
□
□□
□Position o parts
1 2 3 4 5 6 7 8 9 10111213 14 15 16 17 18 19 20 21 22 23 24
BTAOTIAN
(1)
Disk brake
assy.
(2) Brake disc
(3) ead light & position light
(4) Left front turning light
(5) Rear-view mirrors
(6) elmet hook
(7) Side stand
(8) Main stand
(9)
Left rear turning ligh
t
(10) Starting pedal
(11) Muffler
(12) Right rear turning light
(13) Taillight
(14) and-hold
(15) Seat
(16) Ignition switch
(17) Right front turning
ligh
t
(18) Rear brake lever
(19) Left switches assy.
(20) Meters
(21) Right switches assy.
(22) Front brake lever
(23) Fuel tank cap
(24) Seat lock
Mortch International Ltd
http://www.mortch.com

4
□
□□
□Controlling parts
1. Rear brake lever
old it tight and the rear brake functions
2. Switches on the le t handle
A
B
C
A. orn button
B. Turning signal switch
Left turning light
Right turning light
C. Switch for high/low beam lights
3. Meters and indicating lights
A. Left turning lights indicator
B. igh beam indicator
C. Right turning lights indicator
D. Indicates the speed in km/h and Mph
E. Indicates total distance the motorcycle has run
F. Fuel gauge.
0
10
20
30
40
50
60
70
80
Km/h
Mph
0
10
20 30
40
50
AB D
CEF
0 0 0 0 0
Mortch International Ltd
http://www.mortch.com

5
U
S
P
L
O
C
K
4. Front brake lever
old it tightly and the front brake functions.
5. Switches on the right handle
A
B
A. ead light switch
B. Electric starting button
When the ignition switch is at ON position, hold the
brake and push the button and then the engine works.
6. Ignition switch
OFF: The whole circuit is cut. Engine and lights cannot
be operated and the key can be withdrawn.
ON: Engine can be started and all the lights can be
operated. The key cannot be withdrawn.
LOCK: Turn the steering handle fully to the left, slightly
press the key and turn it to the position lock.
Then the key can be taken out.
Mortch International Ltd
http://www.mortch.com

6
Warning
①
15w/40-15w/50
10w/40
10w/30
-10 010 20 30 40C °
20 40 60 80 100 ° F
T
20w/40-20w/50
□
□□
□Starting pedal
Starting pedal is for kicking start of the engine.
□
□
□
□Fuel tank
Usage o the cap:
1.Insert the key and open the seat.
2.Turn the cap counter-clockwise and take out it.
3.Align the lock tongue on cap with the notch on fuel
tank, turn the cap clockwise and tighten it.
`
□
□□
□Fuel and engine oil
A. Gasoline
igh-quality fuel is essential to the engine.
Any sand in the fuel is absolutely prohibited.
90# or higher quality lead-free gasoline is preferred.
B. Engine oil
SAE15w/40
◆
Turn off
the engine when refilling the tank.
◆Turn off the cap slowly.
◆Don’t overfill the gasoline over the designated scale
◆Do not add anything into the gasoline.
Mortch International Ltd
http://www.mortch.com

7
□
□□
□Pre-riding inspection
Please check the following parts before you drive:
No. Items Inspection content
1 Steering handlebar 1.Flexibility 2.No gap or loosing appearance
2 Brake system 1.Travel of front brake and rear brake 2.No break on the cable
3.Flexible function
3 Tires 1.Proper pressure 2.No crack or cutting
4 Fuel Sufficient fuel
5 Engine oil Sufficient engine oil
6 Lights Workable
7 orn Workable
8 Gear oil With normal stock
9 Throttle 1. Proper gap 2.Flexible function 3.Proper control lever returning
10 All the bolts and nuts No loosing appearance.
Mortch International Ltd
http://www.mortch.com

8
□
□□
□Engine starting
1. Please check the volume of machine oil and gasoline
before starting. The main stand should be stood up
while starting the engine.
2. Turn the ignition switch to the “ON” position.
① Press the rear brake lever ② "ON" position
3. Engine Starting
Push the starting button and then the engine can be
started.
◆ Press the rear brake lever in case that the
motorcycle rushes forwards abruptly.
Warning
Mortch International Ltd
http://www.mortch.com

9
4. Kick Starting
Press the brake handle, tread the starting pedal
heavily and then the engine can be started.
◆
5 seconds is the maximum limit for each
startin
g
g
and10 seconds is the minimum interval.
◆ Stop pressing the starting button immediately
after the engine starts.
◆ Do not press the starting button while the engine
is running, or the start motor will be damaged.
◆ When using electric starting, please press the
rear brake lever in advance to get through the
circuit and start the motor.
◆ When using electric starting, don’t operate the
starting motor continually, or it may cause
damage to the starting motor and the battery.
◆ Warm up the engine after cold starting (about 3
minutes).
Warning
◆
After the engine starts, the s
tarting pedal
should be put back to its original position.
Otherwise, it will affect the driver’s driving.
◆ Please don’t start the engine in unventilated
places because the wasted gas with CO is
harmful to human being.
Warning
Mortch International Ltd
http://www.mortch.com

10
□ Regular maintenance
Interval
Item
Km
300
1000
3000
6000
1
2000
Month
N
ew motor
1
3
6
12
Battery
I I I I I
Engine oil strainer
C C
Gasoline strainer
R
Carburetor
I I I C
Air cleaner
core
Clean it every 2000km and replace when necessary
Spark
plug
Clean it every 3000km and replace when necessary
Fuel
throttle
A A A A
Drive belt
I I
Engine oil
R R Replace every 3000km
Brake
system
I I I I I
Front fork and steering
stem bearing
I I I I
S
uspension
I I I I
Tires
I I I I I
Fastening
nuts and bolts
I F F F
Gear oil
R Replace every 5000km / 5Month
Rear brake cam
C
NOTE: I= Inspect and clean 、 adjust 、 replace or lubricate as necessary ： C=Clear, R=Replace, F=fastened
Service more frequently when riding in dusty areas.
Mortch International Ltd
http://www.mortch.com

11
Air-cleaner
1. Battery
12V/5.7Ah battery
① When the voltage is less than 11.5V, please use kick
starting in stead of electric starting.
② Place the ignition switch to OFF position before
battery replacement.
③ Electrode identification: “+”—red line, “-”—green line.
④ Change a new battery every 4 years.
2. Carburetor and idling speed adjustment
① Keep the engine warmed up for 2-3 minutes.
② Adjust the idling speed adjusting screw to set the
engine at speed of 1900±100 r/min.
3. Air cleaner
① Pour the non-inflammable detergent into a basin and
immerse the sponge core of air cleaner into the
detergent.
② Press the core to squeeze the detergent out of it by
palms. Never twist it in case that it is broken.
Warning
◆It has been fully adjusted to the highest
position when manufactured.
Mortch International Ltd
http://www.mortch.com

12
TOP
LOW
③ Immerse the core into engine oil.
④ Squeeze the excessive oil out but keep it lightly oil
immersed.
4. Spark plug
◆Clean the carbon deposit on the spark plug with a
piece of hard wire or steel needle.
◆Adjust the gap to 0.6-0.7mm with a thickness gauge.
◆Use A7RC when replacement is needed.
5.Fuel
Refill the recommended 90# or higher quality lead-free
gasoline when the indicating needle in the fuel gauge
points to the red area.
NOTE: Lead-free gasoline will extend the life of spar
plug and catalytic converter.
6.Engine oil
Replace the engine oil under the condition of the engine
is warm.
Mortch International Ltd
http://www.mortch.com

13
Adjusting nut
① Remove the oil dipstick.
② Remove the oil plug for displacement to drain the
used oil.
③ Reinstall the oil plug, paying attention to be
tightened.
④ Refill 0.8 L recommended fresh oil.
⑤ Fasten all the nuts and screws.
7.Brake system
Normal free travel of the brake lever is about 10-20mm.
①The front brake
a
a=10~20mm
② The rear brake
Turn the adjusting nut to get a proper travel.
◆
FR
EE
TRAVEL
means the distance between
the positions from free status to the
beginning performance of the brake.
◆ Pay attention to the sensitivity of the brake.
Warnin
g:
Mortch International Ltd
http://www.mortch.com

14
①
M inim um level
☆ Front brake
◆Grip the brake lever and check the wear and tear
indicator. If the indicator nearly touched the brake disc,
please ask the appointed maintainer to change the brake
blocks.
①wear and tear indicator ②brake disc ③brake blocks
◆Check the following items of brake system before
driving the motorcycle:
① Check if there is any leakage.
② Check if there is any leakage or crack on the oil
pressed hose.
③ The brake lever should be kept with a certain free
swing distance of 10～20mm, and kept a certain
re-grip power.
④ Abrasion situation of the brake blocks.
◆Brake oil level
① It has been filled
with the special brake
oil before the
motorcycle leaves the
factory. User should fill
or replace the
recommended brake oil (such as No.DOT3 or DOT4
brake oil) from the appointed maintenance station. Never
change or mix other oil, otherwise it would damage the
brake system.
② If the brake oil is insufficient, it might be possible for
the air to come into the brake system, and result in
the failure of the system.
Warning
◆ Brake oil is corrosive material. It would damage
and corrupt the painting of the part. It should be
cleanout if the oil splash on the part.
◆ If the oil sprayed on the skin or eyes, it should
be cleaning quickly with a lot of water.
③
②
①
Mortch International Ltd
http://www.mortch.com

15
1mm
8.Tires
Insufficient tire pressure hastens wear of them and
affects the riding stability. Please check the tire pressure
and tread depth when applying regular maintenance.
①Tire pressure: front 250 kPa, rear 250 kPa.
②Tread depth: It is suggested to replace a new tire
when the tread depth is less than l mm.
9. Starting motor
Check the fastening bolts and the carbon brush, and
replace them if necessary.
10. Fuse
Fuse is linked with the outer line of the battery. When a
light or circuit fails suddenly, check the fuse first.
11.Gear oil
Please use the recommended gear oil: SAE85W/90
Total capacity: 110ml
Replacing capacity: 100ml
◆
The standard tire is
120/70
-
12 56J for
front
and 3.50-10 51J for rear. The use of tire
other than standard may cause trouble.
◆ Tire inflation pressures and the general tire
condition are extremely important to the pro-
per performance and safety of the vehicle.
Warning:
◆ The fuse cannot be replaced by any iron or
aluminum wire.
Warning:
Mortch International Ltd
http://www.mortch.com

16
ow to change gear oil
 Stand up the scooter.
 Take off the oil plug for refill.
 Take off the oil plug for displacement, let off all the
used gear oil.
 Tighten the oil plug for displacement.
 Refill gear oil and tighten the oil plug after refilling.
NOTE: After replacement, please make sure you have
locked the oil plug.
□
□□
□Tools
A full set of tools is offered for your daily use.
oil plug for displacement oil plug for refill
Mortch International Ltd
http://www.mortch.com

17
□
□□
□Technical Parameters
Items Specifications
Size
Length
Width
eight
Wheel base
1895mm
755mm
1045mm
1285mm
Weight
Unloaded weight
Mass weight
92kg±3kg
250kg
Capacity Max. Speed
Slope
25km/h
≥16.8°
Circuit system
Spark plug
Battery
Fuse
eadlight
Front turning lights
Rear turning lights
Brake light
Position lights
A7RC
12V/5.7A
10A
12V 35/35W
12V 10W
12V 10W
12V 21/5W
12V 5W
Volume of the fuel tank
Volume of the engine oil
4.5L±0.5L
1L
Mortch International Ltd
http://www.mortch.com