Beta Rev 4T User manual

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OWNER’S MANUAL
Thank you for choosing
Betamotor. We hope you enjoy
your motorcycle.
This booklet provides
the information you will need
to use and maintain
your bike properly.
The details and specifications given in
this manual do not commit BETAMOTOR
S.p.A, who reserve the right to make
changes to their models at any time.

CAUTION
It is important, after the first hour of break-in, to check
the tightness of all fasteners, paying particular attention
to the following:
• Footrest brackets
• Front and rear brake discs
• Wheel spokes
• Shockabsorber bolt
• Engine bolts
• Rear sprocket
• Exhaust bolts

ENGLISH Index
Index
CHAPTER 1: GENERAL INFORMATION
INDEX OF TOPICS
Principal parts.................................................................................................................................................................................................................44
Vehicle identification details.................................................................................................................................................................................44
Engine identification details..................................................................................................................................................................................44
Console and controls..................................................................................................................................................................................................44
Technical details.............................................................................................................................................................................................................45
Wiring scheme................................................................................................................................................................................................................46
CHAPTER 2: Operation and Use
INDEX OF TOPICS
Filling the fuel tank......................................................................................................................................................................................................48
Start-up ...............................................................................................................................................................................................................................48
Break-in .............................................................................................................................................................................................................................50
Checks and maintenance before and after use off-road ..................................................................................................................50
Recommended lubricants and liquids............................................................................................................................................................. 51
CHAPTER 3: MAINTENANCE AND CHECKS
INDEX OF TOPICS
Lubrication circuit.........................................................................................................................................................................................................53
Engine oil............................................................................................................................................................................................................................54
Brake master cylinder fluid...................................................................................................................................................................................57
Brakes circuit bleeding ............................................................................................................................................................................................59
Clutch master cylinder fluid ..................................................................................................................................................................................60
Clutch circuit bleeding...............................................................................................................................................................................................60
Fork oil ................................................................................................................................................................................................................................ 61
Air filter ..............................................................................................................................................................................................................................62
Sparkplug ..........................................................................................................................................................................................................................63
Front brake ......................................................................................................................................................................................................................64
Rear brake ........................................................................................................................................................................................................................65
Coolant ................................................................................................................................................................................................................................66
Checks after cleaning ................................................................................................................................................................................................66
Scheduled maintenance ........................................................................................................................................67
CHAPTER 4: ADJUSTMENTS
INDEX OF TOPICS
Brake adjustment ........................................................................................................................................................................................................69
Clutch adjustment .......................................................................................................................................................................................................69
Carburettor ......................................................................................................................................................................................................................70
Tickover adjustment ..................................................................................................................................................................................................70
Throttle free clearance adjustment .................................................................................................................................................................70
Steering paly check and adjustment................................................................................................................................................................ 71
Chain tension .................................................................................................................................................................................................................. 71
Front suspension adjustment ..............................................................................................................................................................................72
Rear shockabsorber adjustment .......................................................................................................................................................................72
CHAPTER 5: WHAT TO DO IN AN EMERGENCY
INDEX OF TOPICS
Troubleshooting.............................................................................................................................................................................................................74
Pag.

Chapter 1
General information
INDEX OF TOPICS
Principal parts
Vehicle identification details
Engine identification details
Console and controls
Technical details
Wiring scheme
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1
ENGLISH
General information
44
1
6
2
3
5
4
A
B
1
42
3
VEHICLE IDENTIFICATION DETAILS
Frame identification
The frame identification details (A) are
stamped on the right-hand side of
the headstock.
ENGINE IDENTIFICATION DETAILS
The engine identification details (B) are
stamped in the area indicated in the pic-
ture.
CONSOLE AND CONTROLS
1 Clutch lever
2 Front brake lever
3 Throttle twistgrip
4 Hot start lever
PRINCIPAL PARTS
1 - Filter box 2 - Fuel tank 3 - Fuel filler cap 4 - Silencer
5 - Kickstart lever 6 - Filter cover

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General information
45
TECHNICAL DETAILS
Vehicle weight
- in running order (dry) .......................................................................................................................... 75 kg
Dimensions
- overall length .................................................................................................................................. 2015 mm
- overall width ..................................................................................................................................... 825 mm
- overall height ..................................................................................................................................1.160 mm
- wheelbase .......................................................................................................................................1.319 mm
- seat height ......................................................................................................................................... 680 mm
- ground clearance ............................................................................................................................ 320 mm
Tyres
- pressure kPa ........................................................................................................front 39-44 / rear 29-34
- tyre sizes .......................................................................................................... front 2.75- 21” (Tube Type)
rear 4.00 - 18” (X11Tubeless)
Capacities
- fuel tank ............................................................................................................................................. 2.2 litres
- cooling circuit ....................................................................................................................................... 600 cc
- engine oil ...........................................................................................BARDAHL XT C60 15W50 - 900 cc
Front suspension
- hydraulic forks with 38 mm stanchions, rebound and spring preload adjustment
Fork oil capacities:
- right leg .....................................................................................................................................................370 cc
- left leg ...................................................................................................................................................... 350 cc
Rear suspension
- progressive hydraulic monoshock, with rebound and spring preload adjustment
Front and rear brake discs
- disc, with hydraulic control
Engine
- type ............................................................Single cylinder, 4-stroke, 4 valve head, SOHC. (ZD3E77)
- bore x stroke .............................................................................................................................. 77x53.6 mm
- displacement (cm3) ..............................................................................................................................249.6
- compression ratio .................................................................................................................................11.5:1
- liquid cooling
- digital electronic ignition with magneto flywheel alternator and variable advance
- starting by kickstart
- sparkplug ......................................................................................................................................NGK CR7EB
Fuel system
- carburettor ................................................................................................................MIKUNI SE BSR 33-79
- jet ......................................................................................................................................127.5-27.5 max-min
- runs on unleaded petrol

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General information
46
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ENGLISH
1WIRING SCHEME
CAUTION: Do not run the engine with the voltage regulator connected to the electrical ge-
nerator without also connecting the vehicle wiring harness (central system). Doing so could
cause damage to the regulator itself.
General information
STOP SWITCH
FRONT BRAKE
12V-10W FRONT DX
DIRECTION INDICATOR
PILOT LIGHT
DIRECT. INDIC.
N° 3 LAMP 12V-10W
PILOT LIGHT
12V-10W FRONT SX
DIRECTION INDICATOR
PILOT LIGHT
DRIVING BEAM
FRONT LAMP
12V-25/25W
12V-5W
FRONT LAMP
KLAXTON SWITCH
STOP SWITCH
ENGINE
DIRECT INDICATOR
DIMMER SWITCH
LAMO DIMMER
SWITCH
CONTROL GROUP
KLAXTON 12V CC 12 V ADJUSTER CONSOLE
SPARK COIL
SPARK PLUG
DIODE
GENERATOR
PICK UP
12V-10W TAIL SX
DIRECTION INDICATOR
STABILIZER
12V-10W TAIL DX DIRECT
INDICATOR
12V-5/21W TAIL LAMP
STOP SWITCH
REAR BRAKE
COLORS TABLE
Bi WHITE Gi YELLOW
Ve GREEN Rs RED
Mo BROWN Ar ORANGE
Vi PURPLE Az AZUR
Bl BLUE Ro PINK
Ne BLACK Gr GREY
FRONT LAMP 12V-20W
ELECTRIC FAN
TEMPERATURE SWITCH
GROUND
12 V ADJUSTER
FUEL COCK
KLAXTON
KLAXTON SWITCH
STOP SWITCH ENGINE
LAMP SWITCH
CONTROL GROUP
CONSOLE
SPARK PLUG
SPARK COIL
CONDENSER
GENERATOR
PICK UP
DIODE
12V-5W TAIL LAMP
TO CONNECTOR
FOR RACE TYPE
TO CONNECTOR
FOR RACE TYPE
FUEL FEED COCK
COLORS TABLE
Bi WHITE Gi YELLOW
Ve GREEN Rs RED
Mo BROWN Ar ORANGE
Vi PURPLE Az AZUR
Bl BLUE Ro PINK
Ne BLACK Gr GREY

47
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INDEX OF TOPICS
Filling the fuel tank
Start-up
Break-in
Checks and maintenance before
and after use off-road
Recommended lubricants and liquids
Chapter 2
Operation and Use
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ENGLISH
Operation and use
48
A
A
ON OFF
FILLING THE FUEL TANK
Remove filler cap A. The capacity of the fuel
tank is approximately 2.2 litres.
START-UP
1 Put the gearbox in neutral.
2 WITHOUT opening the throttle, press the
kickstart lever progressively downwards,
avoiding violent strokes, to the bottom of
its travel.
NOTE:
A long period with the engine out of use, such
as when the vehicle is on its side, can lead to a
lowering of the fuel level in the carburettor float
bowl, making the bike hard to start.
in this case open manually the fuel tap by tur-
ning the lever A clockwise (ON)
Once the engine has started, reclose the fuel
tap.