Beta EVO 4T User manual

1GB
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.
Cod. 008440090 000

2
GB
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
3GB
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......................................................18
CHAPTER 2 OPERATION .................................................................. 19
Main parts ..........................................................................................20
Checks before and after use.................................................................. 24
Breaking in..........................................................................................24
Fuelling............................................................................................... 25
Startup................................................................................................ 26
Engine shut-down.................................................................................26
CHAPTER 3 ADJUSTMENTS..............................................................27
Key to symbols.....................................................................................28
Brakes ................................................................................................28
Clutch.................................................................................................29
Adjustment of gas clearance.................................................................. 29
Accelerator .........................................................................................30
Handlebar adjustment .......................................................................... 30
Adjusting fork ......................................................................................30
Shock absorber....................................................................................31
Suspension adjustment according to the motorcyclist’s weight .................... 32
CHAPTER 4 CHECKS AND MAINTENANCE .....................................33
Key to symbols.....................................................................................34
Engine oil............................................................................................34
Coolant ..............................................................................................36
Air filter ..............................................................................................39
Spark plug ..........................................................................................41
Carburetor ..........................................................................................42
Front Brake.......................................................................................... 43
Rear brake ..........................................................................................45

CONTENTS
4
GB
Clutch control ......................................................................................48
Check of steering gear..........................................................................50
Oil fork............................................................................................... 51
Tyres...................................................................................................55
Chain .................................................................................................55
Headlight............................................................................................ 57
Rear tail light....................................................................................... 58
Cleaning the vehicle............................................................................. 59
Prolonged inactivity.............................................................................. 60
Scheduled maintenance vehicle ............................................................61
Tightening torque overview ................................................................... 62
CHAPTER 5 TROUBLESHOOTING ....................................................65
Troubleshooting ...................................................................................66

5GB
OPERATING INSTRUCTIONS
•The vehicle must be accompanied by: number-plate, registration document, tax
disc and insurance.
•Any modifications of the engine or other parts are punishable by severe sanctions
including the confiscation of the vehicle.
•Do not sit on the vehicle when it is on its stand.
•Do not start the engine in closed places.
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 dam-
age 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 IGNI-
TION 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
GB
RIDING SAFETY
•Observe the Highway Code.
•Always wear approved personal protective 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
7GB
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 for homologated version ........................................14
Legend electrical diagram for homologated version .............................15
Electrical diagram for race version .................................................... 16
Legend electrical diagram for race version .........................................17
Recommended lubricants and liquids......................................................18
CHAPTER 1 GENERAL INFORMATION

1
GENERAL INFORMATION
8
GB
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.
In order to read it correctly, it is necessary
to remove the silencer and disconnect the
regulator connector.
WARNING:
Tampering with the identification numbers
is severely punished by law.
A
B

1
GENERAL INFORMATION
9GB
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
14
3
12
4
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
7
2
1
16
6
5
13
8
19
17
18
11 10 15 9

1
GENERAL INFORMATION
10
GB
SPECIFICATIONS
WEIGHT
Dry weight .....................................................................................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 GB
FRONT SUSPENSION
Version EVO 250 EVO 300
Wheel
excursion [mm] 166 166
Right fork leg Left fork leg Right fork leg Left fork leg
K spring
[N/mm] X 7,65 X 7,65
Oil type Shell Tellus S2 V32 SAE 6,1
Oil level [mm]
(edge rod with fork
compressed)
65 125 65 125
Register spring
preload X Full open X Full open
Click in extension Full open X Full open X
REAR SUSPENSION
Version EVO 250 EVO 300
k spring 71N/mm 71N/mm
Length (spring in its seat) [mm] 138,5 138,5
Oil type oil titan SAF 5045 Eu 137 RED
Click in extension Full open Full open
FRONT BRAKE
disk-type with hydraulic control Ø 185 mm
REAR BRAKE
disk-type with hydraulic control Ø 160 mm

1
GENERAL INFORMATION
12
GB
ENGINE
Version EVO 250 EVO 300
Type Single-cylinder, 4-stroke Single-cylinder, 4-stroke
Bore x stroke 77 x 53,6 84 x 53,6
Displacement [cm3] 249,6 297
Pressure ratio 11,5:1 11,4:1
Fuel system carburetor carburetor
CARBURETOR
EVO 250 EVO 300
Version Homologated Competition* Homologated Competition*
Carburetor type SE BSR33-79 SE BSR33-79
Main jet 120 127,5 120 120
Slow jet 17,5 27,5 17,5 27,5
Start jet 60 60 60 60
Needle 5D132 5D132 5D132 5D132
Needle position
(from top) 2° 3° 2° 3°
Air screw turns
(from all closed) 3+1/2 2+1/2 3+1/2 2
Spacer YES NO YES NO
*Such modification makes the vehicle non-compliant with the road regulations
in force. Its use must be limited to the sole private circuits which are closed to
circulation.
Cooling system ......................................... forced liquid circulation by pump
Spark plug ............................................................................NGK CR7EB
Clutch..................................................................................wet, multidisc

1
GENERAL INFORMATION
13 GB
GEAR BOX
Version EVO 250 EVO 300
Primary drive 18/63 18/63
Gear ratio 1st gear 13/36 13/36
Gear ratio 2nd gear 15/36 15/36
Gear ratio 3rd gear 16/30 16/30
Gear ratio 4th gear 24/27 24/27
Gear ratio 5th gear 28/21 28/21
Secondary drive Homologated
Competition* Homologated Competition*
42/13 42/11 42/13 42/11
*Such modification makes the vehicle non-compliant with the road regulations
in force. Its use must be limited to the sole private circuits which are closed to
circulation.
Ignition ...........................................................electronic Hidria 12V-120W

1
GENERAL INFORMATION
14
GB
ELECTRICAL SYSTEM
ELECTRICAL DIAGRAM FOR HOMOLOGATED VERSION
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 GB
LEGEND ELECTRICAL DIAGRAM FOR HOMOLOGATED VERSION
1) R.H. front turn signal with bulb 12V - 10W
2) Headlamp (double filament bulb) 12V-35/35W
3) Position light with bulb 12V - 5W
4) High beam indicator light with bulb 12V 1,2W
5) Dashboard indicator light with bulb 12V 1,2W
6) Turn signal indicator light with bulb 12V 1,2W
7) L.H. front turn signal with bulb 12V - 10W
8) Engine stop button
9) Horn button
10) Light switch
11) Turn signal switch
12) Blinker
13) Rear brake stop button
14) L.H. rear turn signal with bulb 12V - 10W
15) Tail light with bulb 12V - 5/21W
16) R.H. rear turn signal with bulb 12V - 10W
17) Connector connected to the fuel cock
18) Condenser 4700μF - 25V
19) Switch for change mapping
20) Pick-up
21) Generator
22) H.T. coil
23) Electronic control unit
24) Regulator 12V
25) Thermal switch
26) Electrofan
27) Frame earth
28) Horn 12V
29) Frame earth
30) Front brake stop button

1
GENERAL INFORMATION
16
GB
ELECTRICAL DIAGRAM FOR RACE VERSION
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
17 GB
LEGEND ELECTRICAL DIAGRAM FOR RACE VERSION
1) Headlamp with bulb 12V-20W
2) Horn 12V
3) Fuel cock
4) Horn button
5) Engine stop button
6) Condenser 4700μF - 25V
7) Light switch (black)
8) Switch for change mapping (yellow)
9) Tail light with bulb 12V - 3W
10) Generator
11) Pick-up
12) H.T. coil
13) Electronic control unit
14) Regulator 12V
15) Thermal switch
16) Electrofan
17) Frame earth

1
GENERAL INFORMATION
18
GB
RECOMMENDED LUBRICANTS AND LIQUIDS
For better operation and longer vehicle life, we advise you to use the products listed
in the following chart:
PRODUCT TYPE SPECIFICATIONS
ENGINE OIL Liqui Moly racing Synth 10W50
BRAKE OIL Liqui Moly brake fluid DOT 4
CLUTCH ACTUATOR OIL Liqui Moly brake fluid DOT 4
FORK OIL SHELL TELLUS S2 V32 - SAE 6.1
TIE ROD GREASE Liqui Moly Schmierfix
LIQUID COOLANT Liqui Moly Coolant ready mix RAF 12 PLUS

2
OPERATION
19 GB
CHAPTER 2 OPERATION
CONTENTS
Main parts ..........................................................................................20
Fuel cock........................................................................................20
Starter............................................................................................20
Hot start .........................................................................................20
Clutch lever ....................................................................................21
LH switch........................................................................................21
RH switch .......................................................................................21
Front brake lever and gas control ...................................................... 22
Gearchange lever............................................................................22
Brake pedal....................................................................................22
Kick-start ........................................................................................22
Checks before and after use.................................................................. 24
Breaking in..........................................................................................24
Fuelling............................................................................................... 25
Startup................................................................................................ 26
Engine shut-down.................................................................................26

2
OPERATION
20
GB
MAIN PARTS
FUEL COCK
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 2is located on the intake
manifold.
To use, pull it out.
1
2