Beta Motorcycles EVO 300cc 4T 2019 User manual

300CC
4-STROKE
OWNERS MANUAL2019

1EN
EVO 4T
Thanks for you preference, and have a good time! This hand-
book contains the information you need to properly operate and
maintain your motorcycle.
The data, specifications and images shown in this manual does not constitute
an engagement on the part of BETAMOTOR S.p.A. BETAMOTOR reserves
the right to make any changes and improvements to its models at any mo-
ment and without notice.

2
EN
IMPORTANT
We recommend you to check all the tightenings after the first one
or two hours’ ride over rough ground. Special attention should
be paid to the following parts:
%rear sprocket
%ensure that the footrests are properly fixed
%front/rear brake levers/calipers/discs
%check that the plastics are properly fastened
%engine bolts
%shock absorber bolts/swingarm
%wheel hubs/spokes
%rear frame
%pipe connections
%tensioning the chain
IMPORTANT
In the event of interventions on the vehicle, contact Betamotor
after-sales service.

CONTENTS
3EN
TABLE OF CONTENTS
Operating instructions............................................................................. 5
Symbols................................................................................................5
Riding safety .........................................................................................6
CHAPTER 1 GENERAL INFORMATION ..............................................7
Vehicle identification data .......................................................................8
Familiarizing with the vehicle...................................................................9
Specifications ......................................................................................10
Electrical system...................................................................................14
Recommended lubricants and liquids......................................................16
CHAPTER 2 OPERATION .................................................................. 17
Main parts ..........................................................................................18
Checks before and after use..................................................................22
Breaking in..........................................................................................22
Fuelling............................................................................................... 23
Startup................................................................................................ 24
Engine shut-down.................................................................................24
CHAPTER 3 ADJUSTMENTS..............................................................25
Key to symbols.....................................................................................26
Brakes ................................................................................................26
Clutch.................................................................................................27
Adjustment of gas clearance.................................................................. 27
Accelerator .........................................................................................28
Handlebar adjustment .......................................................................... 28
Adjusting fork ...................................................................................... 28
Shock absorber....................................................................................29
Suspension adjustment according to the motorcyclist’s weight....................30
CHAPTER 4 CHECKS AND MAINTENANCE .....................................31
Key to symbols.....................................................................................32
Engine oil............................................................................................32
Coolant ..............................................................................................35
Air filter ..............................................................................................37
Spark plug ..........................................................................................39
Carburetor ..........................................................................................40
Front Brake.......................................................................................... 42
Rear brake ..........................................................................................45

CONTENTS
4
EN
Clutch control ......................................................................................48
Check of steering gear..........................................................................50
Oil fork............................................................................................... 51
Tyres...................................................................................................54
Chain .................................................................................................55
Rear tail light....................................................................................... 56
Headlight............................................................................................ 56
Cleaning the vehicle............................................................................. 57
Prolonged inactivity.............................................................................. 58
Scheduled maintenance vehicle ............................................................59
Tightening torque overview ...................................................................60
CHAPTER 5 REMOVING AND INSTALLING SUPERSTRUCTURES ....63
Removing and installing saddle-mudguard assembly................................. 64
CHAPTER 6 TROUBLESHOOTING ....................................................65
Troubleshooting ................................................................................... 66

5EN
OPERATING INSTRUCTIONS
%The vehicle must be accompanied by: number-plate, registration document, tax
disc and insurance.
%Changes to the engine or other parts is punishable by law with severe penalties,
including the confiscation of the vehicle.
%Do not sit on the vehicle stand.
%Do not start the engine in a closed place.
WARNING
Any modifications and tampering with the vehicle during the warranty period exempt
the manufacturer from all responsibility and invalidate warranty.
SYMBOLS
SAFETY/ATTENTION
Failure to respect information marked with this symbol can entail a personal
hazard.
INTEGRITY OF THE VEHICLE
Failure to respect information marked with this symbol can entail serious damage
to the vehicle and termination of the warranty.
FLAMMABLE LIQUID HAZARD
Read the use and maintenance manual carefully.
MANDATORY TO WEAR PROTECTIVE CLOTHING
Use of the vehicle is subject to wearing specific protective clothing and safety
footwear.
PROTECTIVE GLOVES MANDATORY
To perform the operations described, it is mandatory to wear protective gloves .
FORBIDDEN TO USE NAKED FLAMES OR POSSIBLE UNCONTROLLED
IGNITION SOURCES
NO SMOKING
DO NOT USE MOBILE PHONE
CORROSIVE SUBSTANCES HAZARD
Liquids marked with this symbol are highly corrosive: handle with care
POISONING HAZARD

6
EN
RIDING SAFETY
%Observe the Highway Code.
%Always wear approved personal safety equipment.
%Always ride with the low beam on.
%Always keep the crash helmet visor clean.
%Avoid wearing garments with hanging ends.
%Do not keep sharp or brittle objects in your pockets while riding.
%Properly adjust the rearview mirrors.
%Always ride in a seated position, with both hands on the handlebars and both
feet on the footrests.
%Never ride abreast with other vehicles.
%Do not tow and avoid being towed by other vehicles.
%Always keep a safe distance from other vehicles.
%Do not start off while the vehicle is on its stand.
%Avoid swaying and wheelies as they are extremely dangerous for your own and
other people’s safety as well as for your vehicle.
%Always apply both brakes on dry roads with no gravel and sand. Using one brake
may be dangerous and cause uncontrolled skidding.
%To reduce the braking distance, always apply both brakes.
%On wet roads and in off-road riding, drive with care and at moderate speed.
Take special care in applying the brakes.

1
GENERAL INFORMATION
7EN
CONTENTS
Vehicle identification data .......................................................................8
Frame identification ...........................................................................8
Engine identification ..........................................................................8
Familiarizing with the vehicle...................................................................9
Main parts........................................................................................9
Specifications ......................................................................................10
Weight...........................................................................................10
Vehicle dimensions .......................................................................... 10
Tyres..............................................................................................10
Capacities......................................................................................10
Front suspension..............................................................................11
Rear suspension ..............................................................................11
Front brake..................................................................................... 11
Rear brake ..................................................................................... 11
Engine ...........................................................................................12
Carburetor...................................................................................... 12
Gear box .......................................................................................13
Electrical system...................................................................................14
Electrical diagram ...........................................................................14
Legend electrical diagram ................................................................15
Recommended lubricants and liquids......................................................16
CHAPTER 1 GENERAL INFORMATION

1
GENERAL INFORMATION
8
EN
VEHICLE IDENTIFICATION
DATA
FRAME IDENTIFICATION
Frame identification data Aare stamped
on the right side of the steering head tube.
ENGINE IDENTIFICATION
Engine identification data Bare stamped
in the area shown in the picture.
WARNING:
Tampering with the identification numbers
is severely punished by law.
A
B

1
GENERAL INFORMATION
9EN
FAMILIARIZING WITH THE VEHICLE
MAIN PARTS
1 Fuel tank
2 Tank cap
3 Silencer
4 Rear shock absorber
5 Headlight
6 Rear light
7 Side stand
8 Fork
9 Rider’s footrests
10 Lower bumper
11 Engine
12 Front mudguard
13 Rear mudguard
14 Kick-start
15 Gear lever
16 Rear brake lever
17 Front brake lever
18 Clutch lever
19 Throttle
14
3
12
4
7
2
1
16
6
5
13
8
19
17
18
11
10 15 9

1
GENERAL INFORMATION
10
EN
SPECIFICATIONS
WEIGHT
Weight in running order...................................................................72 kg
Front ..........................................................................................36 kg
Rear...........................................................................................36 kg
VEHICLE DIMENSIONS
maximum length ....................................................................... 2005 mm
maximum width .......................................................................... 850 mm
wheelbase ............................................................................... 1305 mm
maximum height ....................................................................... 1115 mm
ground clearance ....................................................................... 310 mm
saddle height ............................................................................. 660 mm
TYRES
CAPACITIES
fuel tank .....................................................................................2.8 liters
coolant circuit ...............................................................................600 ml
engine oil .....................................................................................900 ml
Dimensions Pressure [Bar]
Front tyre Rear tyre Front tyre Rear tyre
2.75 - 21 4.00 - 18 0.4 ÷ 0.5 0.3 ÷ 0.4

1
GENERAL INFORMATION
11 EN
FRONT SUSPENSION
Wheel excursion [mm] 166
right fork leg left fork leg
K spring [N/mm] X 7,6
Oil type Fuchs 5113D SAE 5
Oil quantity [g] 297
Register spring preload X full open
Click in extension (from fully closed) 22 X
REAR SUSPENSION
K spring 70N/mm
Precharge (spring in its seat)
126,5mm
Oil type oil titan SAF 5045 Eu 137 RED
Click in extension (from fully closed) 2,5
FRONT BRAKE
disk-type with hydraulic control Ø 185 mm
REAR BRAKE
disk-type with hydraulic control Ø 160 mm

1
GENERAL INFORMATION
12
EN
ENGINE
Version EVO 300
Type Single-cylinder
, 4 -stroke
Bore x stroke 84 x 53.6
Displacement [cm3] 297
Pressure ratio 11.4:1
Fuel system carburetor
CARBURETOR
Version EVO 300
Carburetor type SE BSR33-79
Main jet 120
Slow jet 30
Start jet 60
Needle 5D132
Needle position (from top) 4°
Air screw turns (from all closed) 2
Cooling system ......................................... forced liquid circulation by pump
Spark plug ..........................................................................NGK MR7BI-8
Clutch..................................................................................wet, multidisc

1
GENERAL INFORMATION
13 EN
GEAR BOX
Version EVO 300
Primary drive 18/63
Gear ratio 1st gear 13/36
Gear ratio 2nd gear 15/36
Gear ratio 3rd gear 16/30
Gear ratio 4th gear 24/27
Gear ratio 5th gear 28/21
Secondary drive 42/11
Ignition .................................................................... electronic 12V-120W

1
GENERAL INFORMATION
14
EN
ELECTRICAL SYSTEM
ELECTRICAL DIAGRAM
Key to colours
Bi = White
Ve = Green
Ma= Brown
Vi = Purple
Bl = Blue
Ne = Black
Gi = Yellow
Rs = Red
Ar = Orange
Az = Sky-blue
Ro = Pink
Gr = Grey

1
GENERAL INFORMATION
15 EN
LEGEND ELECTRICAL DIAGRAM
1) Horn
2) Horn button
3) Headlamp LED
4) Fuel valve
5) Thermal switch
6) Electrofan
7) Frame earth
8) Engine stop button
9) Switch for change mapping
10) Tail light with bulb 12V - 3W
11) H.T. coil
12) Pick-up
13) Stator
14) Electronic control unit
15) Regulator

All Evo 4 Stroke Models:
Engine Oil: 850cc Motul 7100 10w40 (For CompeƟƟon use Motul 300V 10w40)
Brake Fluid Motul RBF 600
Coolant/AnƟfreeze Motul Motocool Expert
Fork Oil Motul Factory Line 5 wt.
Air Filter Oil Motul Air Filter Oil
Air Filter Cleaner Motul Air Filter Clean
Grease Motul Tech 300
All Evo 2 Stroke Models:
Premix Oil: 60:1 Motul 800 2T
Transmission Oil 550cc Motul Transoil Expert 10w40
Brake/Clutch Fluid Motul RBF 600
Coolant/AnƟfreeze Motul Motocool Expert
Fork Oil Motul Factory Line 5 wt.
Air Filter Oil Motul Air Filter Oil
Air Filter Cleaner Motul Air Filter Clean
Grease Motul Tech 300
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2
OPERATION
17 EN
CHAPTER 2 OPERATION
CONTENTS
Main parts ..........................................................................................18
Fuel valve ....................................................................................... 18
Starter............................................................................................18
Hot start .........................................................................................18
To use, pull it out. ............................................................................ 18
Clutch lever ....................................................................................19
RH switch .......................................................................................19
Switch for change mapping ..............................................................19
Front brake lever and gas control ...................................................... 20
Gearchange lever............................................................................20
Brake pedal....................................................................................20
Kick-start ........................................................................................20
Checks before and after use..................................................................22
Breaking in..........................................................................................22
Fuelling............................................................................................... 23
Startup................................................................................................ 24
Engine shut-down.................................................................................24

2
OPERATION
18
EN
MAIN PARTS
FUEL VALVE
Fuel valve has two positions:
C : OFF Automatic. If the engine is shut off,
the fuel supply is switched off and the fuel
cannot flow from the tank to the carburetor.
A: fuel supply always enabled. The fuel
passes from the tank to the carburetor even
with the engine off.
STARTER
The starter lever 1is located on the car-
burettor.
To use, pull it out.
HOT START
The hot start 2 is located on the intake
manifold.
To use, pull it out.
1
2

2
OPERATION
19 EN
CLUTCH LEVER
Clutch lever 1is fitted to the left-hand side
of the handlebars.
RH SWITCH
The off switch is positioned on the right-
hand side of the handlebar and consists
of the following:
shutdowns engine : it is necessary to
hold it until the engine stops.
SWITCH FOR CHANGE MAPPING
The switch for change mapping is located
on the headlamp mask.
By acting on the switch shown in the figure,
it is possible to select one of two possible
mappings for the ignition advance.
With the switch in position , “soft” map-
ping more suited to muddy terrain and for
a gentler response of the bike is selected.
With the switch in position “hard”
mapping that is more suitable for dry land
and for a more aggressive response of the
bike is selected.
1