RIEJU MARATHON 125 AC Owner's Manual
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RIEJU MARATHON 125 AC Owner's Manual

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Summary of Contents for RIEJU MARATHON 125 AC

  • Page 1 Marathon...
  • Page 3 OWNER’S MANUAL MARATHON 125 AC...
  • Page 5 RIEJU S.A. is grateful for the confidence you have put in their company and would like to congratulate you on your choice of motorbike. The MRT 125 are the resulted of the long-term experience that RIEJU has had in competitions, which has led to the development of a high performance vehicle.

  • Page 6: Table Of Contents

    INDEX Page Page Description of the motorbike ... . 4 Routine testing ..... .13 - Front brake .
  • Page 7 Page Page Front suspension ....19 Technical specifications and characteristics ....29 Rear suspension .

  • Page 8: Description Of The Motorbike

    MOTORBIKE DESCRIPTION This motorbike has a 124 cc single cylinder; air cooled four stroke motor. With a piston diameter of 56,5 mm and it has a 49,5 mm bore. The ignition takes place a generating Magneto of A.C of 140 through W. Engine power is delivered to final drive chain via a Multiple metal clutch with constant pressure springs, submerged in an oil bath.

  • Page 9: Identification Of The Motorbike

    The number is stamped on the right hand side of the front frame (Steering head.) is unique to every machine. This number is required to register your vehicle, this chassis or Vin number should be quoted when requesting warranty assistance or genuine Rieju spare parts.

  • Page 10: Principal Elements Of The Motorbike

    PRINCIPAL ELEMENTS OF THE MOTORBIKE KEYS With this model, you will be given a set of keys, which are used for the Ignition switch/Steering lock. These keys are joined together by a small plastic panel, where the key number is engraved. We recom- mend that this number is kept in a safe place in case the keys are lost.
  • Page 11 4-. Temperature warning lamp (Red.) This light is very important as it can tell us if there is an excessive increase in engine running temperature. 5-. Headlight Main beam war- ning light (Blue) This indicator comes on when the head- lights are on main beam.

  • Page 12: Electric Handlebar Switch

    HANDLE BAR SWITCHES (Left hand side.) 1-. Indicator Switch This has 3 positions: in the centre position it is deactivated, to indicate right it must be moved to the right and to indicate left it must be moved to the left. Note that the button always returns to the central position, to switch off the direction indicators push but- ton.
  • Page 13 4-. Ignition Switch This switch is used to start the engine, after verifying that the gear-change pedal is in the neutral position. Cold Start (Choke) (in the carburetor) When the motor is cold, the choke lever should be placed in the On position. CAUTION: Once the motor has rea- ched it’s normal working temperatu- re, return the choke lever go back to...

  • Page 14: Clutch Lever

    CLUTCH LEVER The clutch lever is situated on the left-hand side of the handlebar. To activate it, pull the lever towards the grip or handlebar. FRONT BRAKE LEVER The front brake lever is situated on the right-hand side of the handlebar. To activate the front brake, pull the lever towards the handlebar.

  • Page 15: Petrol Tank

    PETROL TANK To get to the tank, open it using the stopper of the tank, turning it anti-clockwise. Remember that petrol without oil must always be used. The capacity of the tank is 6.3 litres. PETROL TAP The petrol tap is situated on the right-hand side of the vehicle, under the fuel tank.

  • Page 16: Checks Before Using Motorcycle

    CHECKS BEFORE USING MOTORBIKE Check the following points before using your motorcycle: Items to be checked Check-up Lights and indicators Check if they work correctly Front and rear brakes Check the brake pads for wear and test brakes Accelerator grip Check the set, regulate and lubricate if necessary Petrol tank Check level and fill if necessary...

  • Page 17: Routine Testing

    ROUTINE TESTING FRONT BRAKE Pulling in the front brake lever operates the front brake by pumping brake fluid from the master cylinder to the front brake calliper. The brake pads are pushed by the calliper pistons against the front disc. Slowing the bike down. The braking surface of the disc should be free of oil and dirt to ensure maximum braking efficiency.

  • Page 18: Rear Brake

    (WARNING Brake fluid is corrosive and will damage paintwork, if spilt wash off with water immediately) Always remember that the above must be carried out by a RIEJU official service.

  • Page 19: Throttle Twist Grip

    THROTTLE TWIST GRIP Ensure it works correctly, by turning the grip and verifying if the free play is correct. The grip should return to closed position when released. LIGHTS, INDICATORS AND WARNING LAMPS Check operation of all lights, and direction indicators.

  • Page 20: Motorcycle Operation

    MOTORBIKE OPERATION It is very important to know how to operate your vehicle correctly. NOTE: remember that you must not leave the motor running in an enclosed area, as the toxic gas from the exhaust could cause serious health problems. STARTING AND RIDING.

  • Page 21: Running In

    RUNNING IN The most important period of your motorbike’s life is between 0 and 500 kilometres and because of this we ask you to read the following instructions carefully. In the first 500 kilometres, the motorbike must not be over- worked as the motor is new and the different parts of the motor have to wear in, until it works perfectly.

  • Page 22: Stopping

    CARBURETTOR The carburettor provides the correct petrol air mixture to the engine. It the settings are tampered with poor performance and/or overheating may occur. If you have any problems please refer to your Rieju dealer.

  • Page 23: Front Suspension

    FRONT SUSPENSION The front suspension consists of a hydraulic fork which has been crafted to the highest standards of technology and design. Fork MRT / MRT SM 125 Ø 37 mm. fork tubes Oil capacity: 245 c.c. per leg Type oil recommended: SAE 15W/20 REAR SUSPENSION The rear suspension is made up of a rectangular-pipe swing arm anchored to a hydraulic mono-shock absorber.

  • Page 24: Spark Plug Checks

    SPARK PLUG CHECK The spark plug is an important part of the motor and it is easy to check. Take the spark plug out and check it periodically, the high combustion temperatures and carbon deposits may effect the efficiency of the engine.

  • Page 25: Air Filter

    AIR FILTER To ensure that the engine runs correctly, the air filter must be kept clean and oiled. In order to access the air filter, disassemble the motorcycle seat, allowing free access to the filter box. Remove the cover, which is attached to the box by a screw, and remove the filter housing.
  • Page 26 After removal, check to see if the foam filter is blocked, in which case wash in paraffin, apply some air filter foam oil then squeeze the filter material between your hands to remove surplus oil. Do not wring out the filter element, as this will damage the foam. When refitting the air filter sure that the foam fits the box correctly so that no air can enter the engine without being filtered.

  • Page 27: Transmission, Rear Chain Adjustment And Lubrication

    TRANSMISSION CHAIN ADJUSTING AND LUBRICATION To correct the chain tension, loosen the rear axel bolts and turn the adjustment plates of the rear wheel axle clockwise to tighten the chain and anti-clockwise to loosen the chain. Turn the rear Chain tensioner wheel several times and check the tension in various areas to find the point at which the chain is at its tightest point.
  • Page 28 Try not to over tighten the chain, as it will stretch and wear the sprockets much quicker and may dama- ge the gearbox. If the wheel and chain are badly aligned, this can cause the chain to come off, and severely affect the bikes handling.

  • Page 29: Gearbox Oil Change

    LUBRICATION Engine lubrication uses an oil pump which is located inside the oil sump. The gearbox and clutch use the same oil and the recommended type is CASTROL SAE 20W-50, with a total capacity of 1.2 litres. The oil sump may be drained using the drain screw located at the lower left of the engine.

  • Page 30: Cleaning, Lubrication And Storage

    3. Using a hose pipe remove the degreasing agent and dirt, but only with the pressure that is necessary. (DO NOT USE A PRESSURE WASHER.) NOTE: Rieju is not responsible for the use of degreasing agents that may stain or mark the body work or chassis.
  • Page 31 4. Once the dirt has been removed, wash all the surfaces with warm water and soft detergent. To get to the difficult areas, use a bottle-washing brush or something similar. 5. Immediately rinse with cold water and dry all the surfaces. 6.

  • Page 32: Maintenance

    1st REVISION 2nd REVISION 3rd REVISION BASIC MAINTENANCE CHECKS 500 KMS. 3.500 KMS. 3.000 KMS Brake efficiency check and brake pad wear. · · · Check level of gearbox oil Change Change · Check tension and wear on chain and sprockets ·...

  • Page 33: Technical Specifications And Characteristics

    TECHNICAL SPECIFICATIONS AND CHARACTERISTICS Model MRT / MRT - SM 125 AC Dimensions: Total length / 2070 mm. 2150 mm. Total width 800 mm. 800 mm. Total height / 1145 mm. 1165 mm. Total seat height 870 mm. 890 mm. Distance between axles / 1380 mm.
  • Page 34 Huile de transmission: Type CASTROL SAE 20W 50 Quantity 1,2 liters Air filter Humid rubber foam Petrol: Type Unleaded petrol 95 Tank capacity 6,3 L Carburettor DENI PZ26K Bougie: Type DR8 DA / D8 DA Electrodes separation 0,6 - 0,7 mm Clutch type Multidiscs in oil bath Secondary transmission...
  • Page 35 SPEED CHANGE Speed Primary tree Secondary tree Gear change ratio 1ª Z = 13 Z = 36 1 : 2,77 2ª Z = 17 Z = 32 1 : 1,88 3ª Z = 20 Z = 28 1 : 1,40 4ª...
  • Page 36 Brakes: MRT / MRT SM 125 Front Disc 260 mm Ø Rear Disc 200 mm Ø Tyres: MRT 125 Front 80/90 - 21, with inner tube, 1’7 kg/cm Rear 110/80 - 18, with inner tube, 1’8 kg/cm MRT SM 125 Front 100/80 - 17, 1’8 kg/cm Rear...
  • Page 37 Voltage and bulb output: Light 12 v 35/35 w H4 Rear pilot light 12 v 21/5 w Instrument cluster 12 v 1,2 w Indicators 12 v 10 w Odometer lighting Leds...

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