KAYO MOTOR K2 User manual

ZHEJIANG KAYO MOTOR CO., LTD.
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KAYO MOTO
K2
Service Manual
WWW.KAYOMOTO.COM

ZHEJIANG KAYO MOTOR CO., LTD.
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This service manual is edited by KAYO
Please do not modify the content without authorization。
Manufacturer has the right to improve and update the model’s structure and spare parts
without notice.
The model in the image may be different from the real model.

ZHEJIANG KAYO MOTOR CO., LTD.
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Preface
Hereby, on behalf of KAYO all staff thank you for choosing our dirt bike: K2, and we believe
that this choice will not disappoint you.
This manual is designed to help you better use our products, and it introduces the
maintenance adjustment procedure, disassembly and assembly essentials, inspection and
maintenance points, troubleshooting methods and maintenance technical data of K2 model
in detail, with detailed graphic data attached to guide the operation.
Please carefully read this manual and conduct inspection and repair in accordance with the
standard operating practices, which can effectively extend the service life of each part,
improve the performance of the engine and the reliability of the whole vehicle.
For the sake of technological development, Kayo reserves the right to modify the
construction, equipment and accessories of the motorcycle without prior notice. Due to the
different regulations and requirements in different markets, we have made appropriate
adjustments to the models, so the images in the manual may be different from the standard
samples.In addition, if you have any questions, please refer to our official website
www.kayo.com.cn and contact with our service staff, we will be humbly accept.
Please understand that the contents in this maintenance manual which subject to
change due to vehicle improvement, upgrading will not notify again. The actual
condition of the vehicle shall prevail in the maintenance.
ZHE JIANG KAYO MOTOR CO., LTD
Technical Department

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Content
Symbols and Meanings of Special Words......................................................................................................................... 8
Suggestions for Daily Use............................................................................................................................................. 9
Operation notes.............................................................................................................................................................. 10
Precautions for safety ................................................................................................................................................. 10
Precautions for disassembly and assembly......................................................................................................... 10
Vehicle components and location............................................................................................................................. 12
VIN Code and Engine Number.................................................................................................................................... 14
The Vehicle Parameter.................................................................................................................................................. 15
Important fastener specifications.............................................................................................................................. 16
The Vehicle Control....................................................................................................................................................... 18
Clutch lever inspection............................................................................................................................................ 18
Front brake lever inspection................................................................................................................................... 18
Throttle knob............................................................................................................................................................. 19
Start ........................................................................................................................................................................... 19
Extinguish ................................................................................................................................................................. 19
Fuel Tank Switch ..................................................................................................................................................... 20
Shift check ................................................................................................................................................................ 20
Inspection of rear disc brake.................................................................................................................................. 21
Parking support........................................................................................................................................................ 21
Precautions Before Use ............................................................................................................................................... 21
Advice for beginners................................................................................................................................................ 22
The running-in process........................................................................................................................................... 22
Drive Guide...................................................................................................................................................................... 23
Check items before driving..................................................................................................................................... 23
Precautions for ignition ........................................................................................................................................... 23
Precautions for start ................................................................................................................................................ 24
Precautions for turning............................................................................................................................................ 24
Precautions for acceleration................................................................................................................................... 24
Precautions for shift gears...................................................................................................................................... 24
Precautions for brake.............................................................................................................................................. 24
Precautions for stop & park.................................................................................................................................... 24
Suggested inspection time for all parts of the vehicle ........................................................................................ 25
Suspension system....................................................................................................................................................... 26
Check the vehicle's compression and rebound（with rider）........................................................................... 26
Measure the distance from the center of the rear wheel to the rear fender in suspension .......................... 26
Measure distance from center of rear wheel to rear fender under no load..................................................... 27
Measure distance from center of rear wheel to rear fender in driving condition ............................................ 27
Adjustment for the spring preload of rear shock absorber ................................................................................ 28
Check for the setting of front shock absorber...................................................................................................... 28
Adjustment for the handlebar................................................................................................................................. 28
Disassembly and inspection of vehicle parts......................................................................................................... 29

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Placement................................................................................................................................................................. 29
Disassembly and installation of front shock absorber guard plate................................................................... 29
Disassembly and installation of front disc brake................................................................................................. 30
Disassembly and installation of front shock absorber........................................................................................ 30
Disassembly and installation of clamps................................................................................................................ 31
Check the head steering......................................................................................................................................... 31
Disassembly,installation and lubrication of steering head bearing................................................................... 31
Removal and installation of front fender............................................................................................................... 32
Removal and installation of rear shock absorber........................................................................................................ 32
Removal and installation of seat cushion ................................................................................................................... 33
Removal and installation of air filter.......................................................................................................................... 33
Cleaning and maintenance of air filter ....................................................................................................................... 33
Removal and installation of exhaust pipe................................................................................................................... 34
Removal and installation of muffler........................................................................................................................... 34
Removal and installation of fuel tank......................................................................................................................... 35
Check the chain and clean it....................................................................................................................................... 35
Removal and installation of chain .............................................................................................................................. 36
Check And Adjustment of chain tension.................................................................................................................... 36
Inspection of rear sprocket, engine sprocket and chain guide structure ..................................................................... 37
Inspection of the frame ........................................................................................................................................... 37
Inspection of the swing arm ................................................................................................................................... 37
Inspection of throttle cable ..................................................................................................................................... 38
Inspection of handlebar........................................................................................................................................... 38
Check and maintain of brake system ....................................................................................................................... 38
Check the free stroke of the front brake lever ..................................................................................................... 38
Adjust the stroke of the front brake lever ............................................................................................................. 39
Check the brake disc............................................................................................................................................... 39
Check the front brake fluid level............................................................................................................................ 39
Add the front brake fluid.......................................................................................................................................... 40
Check the front brake pads.................................................................................................................................... 40
Check the free stroke of the foot brake ................................................................................................................ 41
Check the rear disc brake fluid level .......................................................................................................................... 41
Replenish the rear disc brake fluid........................................................................................................................ 42
Check the rear brake pads..................................................................................................................................... 42
Tire inspection and maintenance .............................................................................................................................. 43
Removal and installation of front wheels.............................................................................................................. 43
Removal and installation of rear wheels .............................................................................................................. 43
Check the outside surface of the tire.................................................................................................................... 44
Check the tire pressure........................................................................................................................................... 44
Check the rim and spokes...................................................................................................................................... 44
Electrical system............................................................................................................................................................ 45
Battery removal and installation ............................................................................................................................ 45
Replace the battery ................................................................................................................................................. 45
Engine installation......................................................................................................................................................... 46

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Engine inspection and maintenance ........................................................................................................................ 47
Cylinder head part ................................................................................................................................................... 47
Main parameters and maintenance standards of cylinder head parts............................................................. 47
Troubleshooting.......................................................................................................................................................... 47
Removal of the left cylinder head cover..................................................................................................................... 48
Removal of cylinder head........................................................................................................................................... 48
Decomposition of cylinder head ............................................................................................................................ 49
Inspection of valves and valve springs................................................................................................................. 49
Inspection of camshaft parts.................................................................................................................................. 50
Inspection of cylinder head..................................................................................................................................... 50
Inspection and grinding of valve seat ................................................................................................................... 51
Inspection of valve guide............................................................................................................................................ 51
Assembly of the cylinder head ................................................................................................................................... 51
Installation of the cylinder head ................................................................................................................................. 52
Valve clearance adjustment........................................................................................................................................ 52
Cylinder and Piston .................................................................................................................................................... 53
Precaution:.................................................................................................................................................................. 53
Troubleshooting.......................................................................................................................................................... 53
Disassembly of the cylinder block.............................................................................................................................. 54
Cylinder block inspection........................................................................................................................................... 54
Disassembly of piston and piston ring........................................................................................................................ 55
Inspection of pistons and piston rings ........................................................................................................................ 55
Piston Ring Installation .............................................................................................................................................. 56
Piston installation....................................................................................................................................................... 56
Installation of the cylinder block................................................................................................................................ 57
Right cover, clutch, starting mechanism, shifting mechanism ................................................................................... 57
Precautions ................................................................................................................................................................. 57
Main parameters and maintenance standards ............................................................................................................. 57
Troubleshooting.......................................................................................................................................................... 58
Removal of right crankcase cover .............................................................................................................................. 58
Disassembly of the clutch........................................................................................................................................... 59
Removal of the right body oil pump........................................................................................................................... 59
Removal of the gearshift mechanism ......................................................................................................................... 59
Inspection of Right Crankcase Cover......................................................................................................................... 60
Inspection of the clutch .............................................................................................................................................. 60
Inspection of active teeth............................................................................................................................................ 61
Oil pump inspection ................................................................................................................................................... 61
Shifter inspection........................................................................................................................................................ 61
Assembly of the gearshift mechanism........................................................................................................................ 61
Assembly of the right body oil pump......................................................................................................................... 62
Assembly of the drive gear......................................................................................................................................... 62
Assembly of the clutch............................................................................................................................................... 62
Assembly of the right crankcase cover....................................................................................................................... 62
Left cover, double gear, magneto............................................................................................................................... 63

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Precautions ................................................................................................................................................................. 63
Removal of starter motor............................................................................................................................................ 63
Disassembly of the double gear (1)............................................................................................................................ 63
Removal of left crankcase cover ................................................................................................................................ 63
Disassembly of the magneto stator............................................................................................................................. 63
Disassembly of the magneto rotor.............................................................................................................................. 63
Inspection of Left Crankcase Cover and Duplex Gear Cover .................................................................................... 64
Magneto Inspection.................................................................................................................................................... 64
Start the inspection of the platter teeth ....................................................................................................................... 64
Inspection of starter motor and double gear ............................................................................................................... 64
Start the assembly of large plate teeth and magneto................................................................................................... 64
Assembly of double gear (two) .................................................................................................................................. 65
Installation of magneto stator ..................................................................................................................................... 65
Installation of the left crankcase cover....................................................................................................................... 65
Assembly of double gear (1) ...................................................................................................................................... 66
Assembly of the starter motor .................................................................................................................................... 66
Crankcase, Transmission............................................................................................................................................ 66
Precautions:................................................................................................................................................................ 66
Main parameters and maintenance standards ............................................................................................................. 66
Troubleshooting.......................................................................................................................................................... 67
Crankcase Removal.................................................................................................................................................... 67
Removal of crankshaft, main and auxiliary shafts...................................................................................................... 68
Crankshaft inspection................................................................................................................................................. 68
Inspection of Left and Right Crankcase Bearings ...................................................................................................... 68
Inspection of shift fork, shift fork shaft, shift drum ................................................................................................... 69
Inspection of main and auxiliary shaft combinations ................................................................................................. 69
Checking the oil filter................................................................................................................................................. 69
Assembly of main and auxiliary shafts and crankshaft .............................................................................................. 70
Assembly of closing box and oil filter........................................................................................................................ 70
Assembly of double gear (two) .................................................................................................................................. 70
MOTORCYCLE CLEANING ........................................................................................................................................ 71
STORAGE......................................................................................................................................................................... 71
MAINTENANCE POINTS.............................................................................................................................................. 72

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Symbols and Meanings of Special Words
* This symbol indicates that this operation requires the operator to have professional
knowledge and technical understanding. If you do not have the confidence to complete this
operation, you can go to a professional repair shop or KAYO after-sale service point to be
operated by professionals.
→ This symbol indicates that the specific information is on the following page number.
Danger/warning/attention
In this manual, the words "Danger/Warning/attention" will appear. Please read the following
words carefully to protect yourself and your motorcycle. The meanings of "danger",
"warning" and "attention" are as follows:
Danger: Be on high alert for danger.
Warning: to be alert to moderate danger.
Attention: to be alert to minor danger.
However, please note that in this manual, we only enumerate the main safety issues related
to vehicle maintenance and repair, and the contents of warning slogans cannot cover all the
potential dangers during the use and repair of the vehicle.Therefore, in addition to the
"Danger", "Warning" and "Attention" related matters, users must also have basic
mechanical safety knowledge, if you do not grasp the entire maintenance and repair
operation process, please consult a more experienced senior technician before operation.

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Suggestions for Daily Use
The vast majority of off-road motorcycle fatalities are caused by head injuries. Without
helmets, the chances of serious injury or death from a head-hit are much higher. Therefore,
we strongly recommend that you wear a full set of safety equipment such as helmet, goggles,
gloves and boots when driving, which will save your life at the critical moment.
This series of models is designed for off-road racing at the beginning, without considering
the problem of carrying passengers, and there is no backseat, handlebar and pedal for
carrying people, so please be sure not to use this motorcycle to carry other people except
the driver, which behavior can easily lead to safety accidents.
Try to avoid using non-original parts to modify the car, also do not arbitrarily delete the
original components of the car, if you need to replace any parts, please choose the original
parts produced by KAYO or products authorized by KAYO manufacturers.In addition, the
company is not responsible for any vehicle problems caused by personal modification and
the use of unauthorized parts.
Our K2 product are specially designed for off-road and woodland crossing, so they are not
suitable for highway riding or long-distance motorcycling. If you insist on using them, the
tires may accelerate the wear of the pattern due to high speed rotation and reduce the
service life .It is also not suitable for urban use, as prolonged periods at traffic lights may
cause the engine to overheat and thus shorten its life. Please take care of your vehicle and
avoid problems caused by improper use.
Please check your motorcycle carefully before each use and maintain it in accordance with
the maintenance manual after use. After the motorcycle falls, please first check whether the
main parts are damaged. If you drive a faulty motorcycle, it is very easy to lead to the
occurrence of an accident and endanger your own safety.
When using this motorcycle, the temperature of the engine and exhaust pipe is very high, so
it needs to cool down for a period of time after parking. During this period, do not touch or
move the engine and exhaust pipe, so as not to cause scald. Do not wear shorts while riding,
otherwise leg injuries may result.

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Operation notes
Precautions for safety
1. You must wear work clothes (covered overalls, etc.), hats, and safety boots that are
suitable for the job. If necessary, you should also wear dust-proof glasses, dust-proof masks,
gloves and other safety protection products to protect your body.
2. Because the exhaust contains harmful components, it is forbidden to run the engine for a
long time in a closed place or a place with poor ventilation.
3. When the engine is just stopped, the temperature of the engine and the muffler is still very
high. Do not touch them before cooling to avoid burns.
4. The storage battery solution (dilute sulfuric acid) is a strong corrosive agent, which may
cause burns and blindness when it touches the skin and eyes. If your clothes or skin are
accidentally stained with battery solution, please wash them immediately with plenty of water
and go to the hospital for treatment. The storage battery and storage battery solution should
be kept strictly, and must be placed in a safe place out of the reach of children. When the
battery is charged, it will produce flammable and explosive hydrogen. Once a fire source or
electric spark approaches, there is a danger of explosion. So please charge in a
well-ventilated place.
5. As gasoline is flammable, fireworks are strictly prohibited at the work site. Pay attention
not only to open flames, but also to electric sparks. In addition, the vaporized gasoline may
explode. Please choose a well-ventilated site for operation.
6. Be careful not to let the rear wheels, clutches and other rotating parts and movable parts
pinch hands and clothes during maintenance.
7. When two or more people are doing homework, they must greet each other continuously
to confirm safety.
Precautions for disassembly and assembly
1. Parts, lubricating oil and grease must use KAYO recommended products.
2. The parts of each system should be sorted and kept separately, so that the parts can be
installed back to their original positions.
3. Please clean the dirt and dust on the car before maintenance.
4. Gaskets, O-rings, piston pin retaining rings, split pins, etc. must be replaced with new
ones after disassembly.
5. When the elastic retaining ring is disassembled, if the opening is too large, it will be
deformed and will easily fall off after reassembly. Please do not use elastic retaining rings
that have become loose or have lost their elasticity.
6. After the parts are disassembled and inspected, they should be cleaned and the cleaning
agent should be blown off with compressed air before the measurement. Apply lubricating oil

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on the moving surface before assembling.
7. When disassembling, check the necessary places and measure relevant data so that it
can be restored to the state before disassembly during assembly.
8. Fasteners such as bolts, nuts, and screws must be pre-tightened first, and then tightened
on the diagonal according to the specified tightening torque according to the principle of from
large to small, from inside to outside.
9. The rubber parts should be checked for aging during disassembly and replaced in
advance if necessary. In addition, since rubber parts are not resistant to gasoline, kerosene,
etc., try not to let volatile oils and greases adhere to them.
10. According to the requirements of the maintenance manual, apply or inject the
recommended grease on the designated parts.
11. Use correct special tools for disassembly and assembly operations.
12. The inner ring or outer ring of the ball bearing can be rotated by fingers to confirm
whether the rotation is flexible and smooth. If the disassembly method of applying force on
the ball is adopted during disassembly, the dismantled bearing should not be used again:
If the bearing axial or radial clearance is too large, replace it.
Bearings that feel stuck in rotation should be cleaned, and those that still feel stuck after
cleaning should be replaced, and those that cannot be cleaned should be replaced
directly.
It is a compression fit with the body or the shaft diameter. If the fit is not tight after
disassembly, replace the bearing.
13. Bearings should be coated with oil or grease before assembling. Pay attention to the
installation direction when assembling single-sided dust-proof bearings. Open type or
double-sided dust-proof bearings should be installed with the manufacturer's logo and size
facing outward when assembling.
14. When installing the rectangular retaining ring, the chamfered side should face the
direction of force. Do not use the retaining ring that has been slackened and lost its elasticity.
After assembling, turn the rectangular retaining ring to confirm that it is firmly installed in the
groove.
15. After assembly, it is necessary to check whether each fastening part is tightened and
whether it works normally.
16. Brake fluid and coolant will damage the painted surface, plastic parts, rubber parts, etc.
Do not allow them to adhere to such parts, and rinse with water immediately in case of
adhesion.
17. The oil seal should be installed with the side with the manufacturer's logo facing outward
(the direction without oil):
When assembling, be careful not to curl the oil seal lip and prevent burrs from scratching
the oil seal lip.
Apply grease on the oil seal lip before assembling.
18. When installing hose-like parts, insert the hose into the root of the joint. If there is a pipe
clamp, install the pipe clamp in the dent of the pipe. Replace the hoses that are not tight
during installation.
19. Don't get dust, dirt, etc. into the engine and brake hydraulic system.
20. The gasket material attached to the joint surface of each engine box must be cleaned up

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before assembly. The bumps on the contact surface must be polished evenly with oilstone.
21. Do not twist or bend the cable too much. Deformed and damaged cables can cause
malfunction or breakage.
22. When assembling protective cap parts, if there is a groove, the protective cap must be
inserted into the groove.
Vehicle components and location
K2 specific components and locations
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
No.
Name
No.
Name
1
Front fender
10
Front brake caliper
2
Headlight
11
Front fork
3
Raiser
12
Fuel tank
4
Handlebar
13
Gear shift lever
5
Vent pipe
14
Pedal
6
Fuel tank cap
15
Chain
7
Fuel tank tap
16
Side stand
8
Air filter
17
Chain guide
9
Chain slider
18
Rear sprocket

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19 20 21 22 23 24
25 26 27 28 29 30 31
No.
Name
No.
Name
19
Rear fender
26
Rear brake caliper
20
Exhaust pipe muffler
27
Steel swingarm
21
Seat
28
Rear brake pump
22
Rear shock
29
Brake pedal
23
Upper clamp
30
Muffler
24
Lower clamp
31
Front brake disc
25
Rear brake disc

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VIN Code and Engine Number
VIN Code
The VIN Code of the K2 is located on the
nameplate of the front extension tube.
Engine Number
The engine number of the K2 is located on the
inside of the engine gearshift lever.

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The Vehicle Parameter
Vehicle Dimensions and Mass Parameter
L*W*H（mm）
2010×840×1160
L*W*H（mm）
1340
Net weight（kg）
105
Tire size
F：80/100-21；R：110/90-18
Seat height（mm）
875
Tank volume（L）
6.7
Engine Parameters
Engine type
Single cylinder, four stroke, Air-cooled, 4 Valves
Clutch type
Wet type, Multiple disk
Cylinder diameter×stroke
65.5×66.2mm
Displacement
249.9
Max. Power（kw/r/min）
12/7000
Max. Torque（N•m/r/min）
17.5/5500
Compression Ratio
9.6：1
Shift type
Usually engaged two - stage transmission five - speed
transmission, International profile
Starting
Electric
Fuel control system
Carburetor
Battery
EL2-2500lithium battery
Chain
#520H；13T/45T
Frame/Shock/Brake/Wheel system Parameters
Frame type
Central double cradle type high strength steel tube frame
Front shock
Inverted single unadjustable front shock absorber L=800mm
Rear shock
Adjustable rear shock L=360mm
Swingarm
High-strength steel flat fork L=540mm
Handlebar
6061 aluminum alloy fat bar, with Kayo special ultra-soft off-road
grip
F/R rims
F: 1.60×21；R: 2.15×18；high strength aluminum rim
F brake system
Φ240mm disc brake
R brake system
Φ220mm disc brake, Forged up-walking brake pedal
Others
Air filter type
Sponge filter core filter type
Fuel type
92 and above grade gasoline
Motorcyclists
1（rider）
Maximum load mass
120kg

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Important fastener specifications
No.
Item
Fastener specifications
Quantity
1
Front brake caliper mounting
bolt
Outer hexagon small head flange
M8×40 full thread
2
2
Steering column nut
Aluminum silver M26×1
1
3
Upper pressure block
mounting screws
Hexagon socket cap screws
M8×110
4
4
Front disc brake rotor
mounting bolt
Hexagon socket head M8×26
5
Front axle mounting nut
Socket flange M14×1.5
1
6
Shift lever mounting nut
Hexagon socket head M6×20
1
7
Engine front mounting bolt
Outer hexagon small head flange
bolts M8×90
2
8
Engine rear mounting bolt
Hexagon bolts on opposite sides
M10×110
2
9
Engine front mounting bolt
Hexagon flange self-locking nuts
M8
2
10
Engine rear mounting bolt
Hexagon flange self-locking nuts
M10×1.25
2
11
Exhaust pipe mounting nut
Hexagon flange self-locking nuts
M8
2
12
Chain guide sleeve mounting
screws
Cross recessed pan head screws
M6×12
2
13
Chain guide sleeve mounting
screws
Cross large flat head machine
screw M6×12
1
14
Flange axle mounting nut
Hexagon flange self-locking nuts
M16×1.5×H14.8
1
15
Adjusting Chain bolt
Hexagon bolts on opposite sides
M8×70
2
16
Adjusting chain nut
Hexagon nuts with opposite side
M8
4
17
Rear shock and frame
connecting bolt
Outer hexagon big head flange
M10×45×1.25
1
18
Rear shock and swingarm
connecting bolt
Outer hexagon big head flange
M10×45×1.25
1
19
Rear shock and swingarm
tighting nut
Hexagonal flange with teeth
M10×1.25
1
20
Rear brake disc mounting bolt
Opposite side of outer hexagon
M6×20
4

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21
Rear sprocket mounting
screws
Socket cap screw
M8×31 10.9S
6
22
Rear sprocket fastening nut
Hexagon flange self-locking nuts
M10×1.25
6
23
Rear axle nut
Hexagon flange self-locking nuts
M14×1.5
1
24
Rear brake pump mounting
bolt
Hexagon socket head M6×20
2
25
High voltage package
mounting bolt
Outer hexagon small head flange
boltsM6×16
1
26
Voltage stabilizer mounting
bolt
Outer hexagon big head flange
M6×16
2
27
Electric door lock bracket bolt
Outer hexagon small head flange
bolts M6×12
2
28
Screws connecting the left and
right guard plates to the fuel
tank
Cross large flat head machine
teeth M6×12
6
29
Muffler mounting bolt
Hexagon socket cap screws
M8×25
1
30
Hexagonal flange tooth nut
M6
8
31
Hexagon flange self-locking
nuts
M6
14
The tightening torque of the fasteners in the above table can refer to the standard torque.
Note：Before installing the thread, apply anti-rust grease on the thread and the joint surface.

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The Vehicle Control
Clutch lever inspection
The clutch is controlled by the clutch lever, which
located at the left end of the handlebar, and
operated by the left hand.
Front brake lever inspection
The front disc brake is controlled by the brake lever.
Which located at the right end of the handlebar, and
operated by the right hand.
The angle between the brake lever and the
handlebar of K2 model can be adjusted according to
the needs of customers. For details, see "Adjusting
the Stroke of the Front Brake lever".
The front brake adopts a floating caliper disc brake,
which is installed on the lower end of the left front
shock and fixed by 2 bolts.

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Throttle knob
The throttle knob is located on the right side of the
handlebar and is controlled by turning with the right
hand. When the handle is turned counterclockwise,
increase the throttle, release the handle and return it
to the position.
Start
The vehicle start button is located on the right side
of the handlebar, close to the position of the throttle
knob. It is a square gray button. Long press it to start
the motorcycle engine. In addition to the start button,
the vehicle can also be started by stepping on the
start lever.
Note：When starting, the left hand should squeeze
the brake to prevent the engine from starting with
gear.
Note：There should be fuel in the fuel tank before
starting the engine, and the fuel tank switch is
required to be in the open position.
Extinguish
The engine's stop switch is located on the left side of
the handlebar near the grip. It is a square red
button. Long press it to turn off the engine.

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Fuel Tank Switch
The K2 carburetor version adjusts the fuel supply
through the fuel tank switch, which is located at the
bottom of the left side of the fuel tank. By rotating the
switch, you can control whether the fuel enters the
carburetor, so as to achieve the control effect.
The meaning of each symbol on the fuel tank switch
is as shown in the left figure, where the "ON" symbol
indicates that the switch is turned on and the fuel is
drained; the "OFF" symbol indicates that the switch
is turned off and the fuel drain stops; the "RES"
symbol indicates that the reserve oil is enabled.
Shift check
The K2 shift lever is located on the left side of the
engine, and the shift operation is performed by
stepping on and hooking up the shift lever.
The K2 engine gear is the international five gears,
and its gear setting is shown in the left picture.