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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.
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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...
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 ..............
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.
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.
CHAPTER 1 GENERAL INFORMATION 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 ..................
VEHICLE IDENTIFICATION DATA FRAME IDENTIFICATION Frame identification data A are stamped on the right side of the steering head tube. ENGINE IDENTIFICATION Engine identification data B are stamped in the area shown in the picture. WARNING: Tampering with the identification numbers is severely punished by law.
FAMILIARIZING WITH THE VEHICLE MAIN PARTS 1 Fuel tank 11 Engine 2 Tank cap 12 Front mudguard 3 Silencer 13 Rear mudguard 4 Rear shock absorber 14 Kick-start 5 Headlight 15 Gear lever 6 Rear light 16 Rear brake lever 7 Side stand 17 Front brake lever 8 Fork...
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 ................
FRONT SUSPENSION Wheel excursion [mm] right fork leg left fork leg K spring [N/mm] Oil type Fuchs 5113D SAE 5 Oil quantity [g] Register spring preload full open Click in extension (from fully closed) REAR SUSPENSION K spring 70N/mm Precharge (spring in its seat) 126,5mm Oil type oil titan SAF 5045 Eu 137 RED...
ENGINE Version EVO 300 Type Single-cylinder, 4-stroke Bore x stroke 84 x 53.6 Displacement [cm Pressure ratio 11.4:1 Fuel system carburetor CARBURETOR Version EVO 300 Carburetor type SE BSR33-79 Main jet Slow jet Start jet Needle 5D132 Needle position (from top) 4°...
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...
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 ............
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.
CLUTCH LEVER Clutch lever 1 is 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.
FRONT BRAKE LEVER AND GAS CONTROL The front brake lever 1 and the gas throt- tle 2 are located on the right side of the handlebar. GEARCHANGE LEVER Gearchange lever is fitted to the left side of the engine. The positions corresponding to the different gears are shown in the figure.
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SIDE STAND Press down side stand with the foot and lean the vehicle against it. Ensure that the ground is solid and the vehicle stands steadily. WARNING! The kickstand has an automatic closing device. When the vehicle weight on the kickstand is reduced, it closes automatically.
CHECKS BEFORE AND AFTER USE For safe driving and long vehicle life you should: 4444). lights, the indicators, the warning lights and the horn. BREAKING IN The breaking-in period lasts approximately 5 hours, during which it is advisable to: Avoid travelling at constant speed. Avoid turning the throttle more than 3/4 of the way.
FUELLING Use unleaded gasoline. Fuel tank capacity is shown on page 10. To open the fuel tank’s cap, turn it anti- clockwise. To close the fuel tank’s cap, set it on the tank and crew it clockwise. WARNING: The refuelling should be performed with the engine off.
STARTUP Set the fuel tank cock to “A” (see page 18). - Check that the gears are in neutral (page 20). - Pull the clutch lever (page 19). KICKSTART (page 20): depress the kick-starter with a sharp move- ment of the foot ATTENTION Once the pedal has been de- pressed, release it immediately.
KEY TO SYMBOLS Tightening torque Threadlocker Medium Grease BRAKES FRONT BRAKE The front brake is disk type with hydraulic control. The position of the lever is controlled through the use of register 1. Once the position of the lever has been changed, register 2 must be changed to restore the initial correct clearance.
CLUTCH The position of the lever is controlled through the use of register 1. Once the position of the lever has been changed, register 2 must be changed to restore the initial correct clearance. The idle stroke of push rod must not be less than 0.9 mm 0,9 mm ATTENTION: reduced clearance...
ACCELERATOR ADJUSTING THE IDLE SPEED In order to perform this operation correctly, we advise you to do it when the engine is hot, connecting an electric revolution counter to the spark plug wire. Then use a screwdriver on register screw A to calibrate the minimum with 1.100÷1.200 rpm.
ADJUSTING THE SPRING PRELOAD Spring preload is adjusted by means of screw 2. Turning clockwise will increase the preload, while rotating counter- clock- wise decreases the preload. For standard calibration, refer to page SHOCK ABSORBER ADJUSTING THE REBOUND DAMPER The hydraulic brake unit in extension deter- mines the behaviour in the extension phase of the shock absorber and can be adjusted using screw 1.
ADJUSTING THE SPRING PRELOAD To adjust the spring preload, use the pro- cedure described below. Loosen counter-ring 1, rotate ring 2 clock- wise to increase the spring preload (and consequently the shock absorber preload) or anticlockwise to decrease it. After obtaining the desired preload, turn counter-ring 1 until it stops against adjust- ing ring 2.
KEY TO SYMBOLS Tightening torque Threadlocker Medium Grease ENGINE OIL CHECK THE LEVEL The engine oil level must be checked when the engine is warm. Let the engine run for a few minutes then turn it off. Keep the vehicle in vertical position relative to the ground.
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- Unscrew the plug 4 in the left-hand cas- ing and use pliers to extract the filter. Clean it carefully and blow it through with compressed air. Check for damage to the O-rings, and replace them if necessary. Refit all the parts and tighten the plug to 15 Nm.
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- Extract the paper filter using pliers. Check the condition of the O-ring too, and replace it if necessary. Change the filter and refit the cover, tightening the three M6x20 bolts to 10 - Pour in the quantity of oil indicated on- page 10.
COOLANT CHECK THE LEVEL Keep the vehicle in vertical position relative to the ground. The level of the coolant must be checked when the engine is cold. Use the following procedure: - Unscrew cap 1 and ensure that the liq- uid is visible in the lower portion of the loading tube.
REPLACEMENT Position the vehicle on a flat base and in a stable manner. Replacement of the coolant must take place when the engine is cold. 1) Unscrew cap 1. 2) Unscrew screw 2, collecting the liquid in a container. 3) Drain the liquid. 4) Tighten screw 2 applying the specific washer.
- with the eyes, rinse immediately with plenty of water and seek medical advice; - with skin, Immediately clean contaminat- ed areas with soap and water Change clothing that is contaminated with cool- ant. If coolant is swallowed, contact a doctor immediately.
- Remove the filter frame and the filter by unscrewing the screw 2. WARNING: After every intervention, check that nothing has been left inside the filter box. - Reassemble by performing the operations in reverse order. CLEANING AIR FILTER - Thoroughly wash the filter with water and soap.
Verify the integrity of water proofing gaskets on air box shown in the picture. Change them if these are damaged. To replace, contact authorised Betamotor customer service. WARNING: Never use the vehicle if the air filter is not in place. The infiltration of dust and dirt can cause damage and considerable wear.
CARBURETOR DRAINING THE CARBURETOR FLOAT CHAMBER If the carburetor tank needs to be emptied, proceed as described. Perform the opera- tion once the engine is cold. Turn the fuel cock to C position (see page 18). Place tube 1 in a container to gather the fuel that flows out.
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Fuel must not come into contact with the skin, eyes, and clothing. Do not breathe in the fuel vapours. If contact occurs with the eyes, rinse immediately with plenty of water and seek medical advice. If con- tact occurs with skin, immediately clean contaminated areas with soap and water If fuel is swallowed, contact a doctor immediately.
FRONT BRAKE CHECK THE LEVEL OF THE FRONT BRAKE FLUID Check the level of the brake fluid through sight A. The level of the fluid should never fall below the mark in the sight. RESTORING THE LEVEL OF THE FRONT BRAKE FLUID To restore the level of the brake fluid, loosen the two screws 1, lift cap 2 and add brake fluid until its level is 5 mm below the upper...
BLEEDING THE FRONT BRAKE To bleed air from the front brake circuit, proceed as follows: 1 from the valve a container. keep the lever pressed. operation until obtaining a continuous outflow of oil within no air bubbles. NOTE: During this procedure, continuously top up the brake pump thank to replace the oil that is out flowing.
FRONT BRAKE LINING CONTROL 2 mm In order to verify the wear condition of front brake is enough to view the caliper from the bottom, where is possible to glimpse the brake lining tails which will have to show a brake of 2 mm in thickness. If the stratum is lesser let’s start replacing them.
REAR BRAKE CHECK THE LEVEL OF THE REAR BRAKE FLUID Check the level of the brake fluid through sight A. The level of the fluid should never fall below the mark in the sight. RESTORING THE LEVEL OF THE REAR BRAKE FLUID To restore the level of the brake fluid, loosen the two screws 1, lift cap 2 and add brake fluid until its level is 5 mm below the upper...
BLEEDING THE REAR BRAKE To bleed air from the rear brake circuit, proceed as follows: 1 from the valve a container. and keep the lever pressed. If are still visible in the tube repeat above operation until obtaining a continuous outflow of oil within no air bubbles.
REAR BRAKE LINING CONTROL 2 mm In order to verify the wear condition of rear brake is enough to view the caliper from the back side, where is possible to glimpse the brake lining tails which will have to show a brake of 2 mm in thickness. If the stratum is lesser let’s start replacing them.
CLUTCH CONTROL CHECK OIL LEVEL To check the oil level in the clutch pump, first remove cover 1. Remove the two screws 2 and take off cover 1 together with the rubber bellows. With the clutch pump in a horizontal posi- tion, the level of the oil should be 5 mm below the upper rim.
BLEEDING CLUTCH CONTROL 1 from the valve 2. into the valve 2, and the other end inside a container. keep the lever pressed. operation until obtaining a continuous outflow of oil within no air bubles. NOTE: During this procedure, continuosly top up the brake pump thank to replace the oil that is out flowing.
CHECK OF STEERING GEAR Periodically check the play in the steering sleeve by moving the fork back and forth as shown in the figure. Whenever you feel play, adjust as described below: Loosen the screws 1. 10Nm Loosen the screw 2. Take up the play by means of nut 3.
OIL FORK The procedure for changing the oil in the forks is provided only for information. We recommend having the operation performed by a BETAMOTOR authorized workshop. REMOVING LEGS To replace, proceed as follows: Position the vehicle on the central bike stand.
Empty the fork leg and the cartridge, drain- ing all the oil inside. Reassemble the cartridge on the fork leg tightening the fixing screw, then refill oil in the cartridge. Pour in the quantity of liquid indicated on page 10. Use the liquid indicated on page 16 in the “Recommended lubricants and liquids”...
LEGS ASSEMBLY AND PARTS Apply the legs to the vehicle and tighten the screws 1 to the torque indicated. ATTENTION: Tightening of the screws should be carried out by adjusting the torque wrench to to the stability torque with 10Nm repeated tightening until stability torque has been achieved.
LINKAGE REAR SUSPENSION To guarantee an optimal operation and the 45Nm longest lifetime of the progressive linkage of the rear suspension, it is recommended to check after every race/run the correct tightening of the bolt. Verify that the result of the suspension bolts to specified torque.
CHAIN Checking the drive chain periodically to ensure longer chain life. Always keep it lubricated and clean of deposited dirt. Take special care in preventing the lubri- cant from coming into contact with the rear tyre or brake disc, otherwise the tyre grip and the action of the brake would be greatly reduced, making it very difficult to control the vehicle.
Rotate register 3 into the same position as register 2. Ensure the distance between chain and swingarm is that recommended. If the distance between chain and swingarm is not that recommended pro- ceed to readjustment. Tighten the pin to the torque indicated. 80Nm HEADLIGHT Keep the headlight glass clean at all times...
CLEANING THE VEHICLE GENERAL PRECAUTIONS WARNING: Do not clean your vehicle with a high-pressure device with a strong jet of water. Excessive pressure can reach electrical components, con- nectors, flexible cables, bearings, etc and can damage or destroy them. WARNING: Wash motorbikes frequently with cold water that are used near the sea (salty air) and on roads subject to salt spreading in winter.
To prevent malfunction of the electrical system, treat electric contacts and switches with electrical contact spray. ATTENTION: any oxidation of electrical contacts may result in serious malfunc- tioning. PROLONGED INACTIVITY A few simple operations should be performed to keep the vehicle in good condition whenever it is to remain inactive for a long period (e.g.
TIGHTENING TORQUE OVERVIEW Here below is an overview of the tightening torque of all pieces subject to adjust- ment or maintenance: Forecarriage Tightening torque [Nm] Threadlock Wheel pin Fork foots - wheel pin Brake caliper - Fork Steering head base - fork legs Steering head - fork legs Stem pin on steering head Upper handlebar u-bolt...
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Headlamps Tightening torque [Nm] Threadlock Headlight mask Tail light glass Medium strength threadlock WARNING: Tightening of the screws should be carried out by adjusting the torque wrench to the stability torque with repeated tightening until stability torque has been achieved.
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CHAPTER 5 REMOVING AND INSTALLING SUPERSTRUCTURES CONTENTS Removing and installing saddle-mudguard assembly ......... 64...
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REMOVING AND 2,5Nm INSTALLING SADDLE- 2,5Nm MUDGUARD ASSEMBLY Remove screws 1 and 2 (two per side). Remove the mudguard. At the end refit the screws 1 and 2. Tighten to the torque indicated.
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TROUBLESHOOTING PROBLEM CAUSE REMEDY The engine turns over but Fuel cock in C position Turn the fuel cock in A position will not start Dirty carburettor jets Contact authorised BETAMOTOR customer service Spark plug dirty Clean or replace the spark plug Spark gap wrongly adjusted Restore the spark gap (page 39)
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ALPHABETICAL INDEX Accelerator ..................28 Adjusting fork ..................28 Adjustment of gas clearance ..............27 Air filter ....................37 Brakes ....................26 Breaking in..................22 Carburetor ..................40 Chain ....................55 Check of steering gear................50 Checks before and after use ..............22 Cleaning the vehicle ................
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