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Front suspension  . . . . . . . . . . . . . . . . . . . .19

Rear suspension . . . . . . . . . . . . . . . . . . . . .19

Spark plug checks    . . . . . . . . . . . . . . . . . .20

Air filter  . . . . . . . . . . . . . . . . . . . . . . . . . .21

Transmission, Rear chain adjustment 
and lubrication  . . . . . . . . . . . . . . . . . . .

23

Gearbox Oil change  . . . . . . . . . . . . . . . . .25

Cleaning, lubrication and storage  . . . . . . . .26

Maintenance  . . . . . . . . . . . . . . . . . . . . . . .28

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Technical specifications 
and characteristics  . . . . . . . . . . . . . . . . . . .29

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manual usuari mtr 125 ang ok.qxp  17/10/2012  12:13  Página 3

Summary of Contents for MARATHON 125 AC

Page 1: ...Marathon 125 ...

Page 2: ......

Page 3: ...OWNER S MANUAL MARATHON 125 AC english subportada 4 idiomes qxp 20 11 2009 13 10 Página 3 ...

Page 4: ...Pagina en Blanc qxp 22 07 2005 16 22 Página 1 ...

Page 5: ...formation that follow carefully We wish to remind you that the life of the vehicle depends on how it is maintained Maintaining the vehi cle in perfect working condition reduces the cost of repair This manual has to be considered as an integrate component of the motorbike and must remain part of the basic equipment and handed over in the event of a change of vehicle ownership In the event of any pr...

Page 6: ...ar brake pedal 10 Gear box 10 Petrol tank 11 Petrol tap 11 Checks before using motorcycle 12 Page Routine testing 13 Front brake 13 Rear brake 14 Brake fluid and brake pads 14 Throttle twist grip 15 Lights and indicators 15 Tyres 15 Motorcycle operation 16 Starting the motor 16 Running In 17 Acceleration 17 Braking 17 Stopping 18 Gear box 18 Carburettor 18 2 manual usuari mtr 125 ang ok qxp 17 10 ...

Page 7: ...ks 20 Air filter 21 Transmission Rear chain adjustment and lubrication 23 Gearbox Oil change 25 Cleaning lubrication and storage 26 Maintenance 28 Page Technical specifications and characteristics 29 3 manual usuari mtr 125 ang ok qxp 17 10 2012 12 13 Página 3 ...

Page 8: ... with constant pressure springs submerged in an oil bath The engine is anchored to a highly resistant perimeter type chassis with tapered steering bearings The front suspension consists of a hydraulic bracket with bars of 37 mm of diameter The back suspension consists of a mechanical hydraulic shock absorber that provides great smoothness of operation The front disk brake is of a diameter of 260 m...

Page 9: ...mber 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 5 manual usuari mtr 125 ang ok qxp 17 10 2012 12 13 Página 5 ...

Page 10: ...MENT AND INDICATORS 1 MainIgnitionswitch The Ignition switch has three positions the Ignition off position the start or Ignition on position and a third position which switches on the front and rear lights of the bike 2 Speedometer Kmh and Mph The speedometer has the odometer fitted which is calibrated in kilometres 3 Out of gear Neutral indicator Green This light comes on when the gear change lev...

Page 11: ...e in engine running temperature 5 Headlight Main beam war ning light Blue This indicator comes on when the head lights are on main beam 6 Direction indicator warning lamp Green This indicator comes on when we acti vate the direction indicators 1 2 3 6 5 4 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 7 ...

Page 12: ... position to switch off the direction indicators push but ton 2 Horn Button Red Press the button to activate the horn 3 Main and dip beam light Switch This switch has two positions when it s down the dip beam is on and in the upper position the main beam is illuminated The lights run directly from the engine to switch the lights on the Ignition key has to be tur ned towards the lighting position 8...

Page 13: ...art 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 it s original position otherwise it could cause the motor to misfire 9 4 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 9 ...

Page 14: ...AL The rear brake pedal is on the right hand side of the motorbike To activate it press downwards with the foot GEAR BOX PEDAL This is situated underneath the left part of the motor it is activated with the foot taking it all the way and then letting it go back to its original position before changing gear again To put the motorcycle into first gear the pedal has to be pressed downwards To change ...

Page 15: ...sition the fuel will not go through Put the lever in this position when the motor is not running when parked and garaged ON with the lever in this position the fuel goes to the carburet tor Normal driving is done with the lever in this position RES this position is RESERVE If you run out of fuel while you are driving with the lever in the ON position turn the lever to this position Fill the tank a...

Page 16: ...nd fill if necessary Tyres Check the tyre pressure and wear Indicators Instrument panel Check if they work correctly Clutch Check adjustment and smooth operation Transmission chain Check tension and condition of chain and sprockets plus lubricate Each time the vehicle is used it should be checked as above A complete check does not take more than a few minutes If during these checks any abnormality...

Page 17: ... as necessary If there is air in the system the brakes will need to be bled Loosen the bleed nipple on the front calliper putting a petrol tube onto the nipple This tube should be put in a recipient so as not to spill brake fluid Undo the brake nip ple on the calliper 1 or 2 turns only and gently operate the front brake lever so that the brake fluid goes down until it comes out through the tube wi...

Page 18: ...KE PAD WEAR Check that the level of brake fluid is correct if not Check for brake pad wear If the pad material is less than 2mm thick the pads should be replaced If the pads are not worn out top up the brake reservoir with brake fluid 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 off...

Page 19: ...braking distance the therefore check the tyre pressures regularly for your own safety Make sure that the rim is central and not damaged as well as the wear on the tyres Do not overload the vehicle as this will effect stability and increases tyre wear CAUTION when the pressure is very high the tyres can no longer absorb any shocks transmitting any road sur face defects directly to the chassis handl...

Page 20: ...kick start to turn the engine over After a few kicks the engine should fire allow the kick start to return to its rest position TO RIDE AWAY Pull in the clutch lever and put the motorbike in first gear Down one click slowly release the clutch lever while at the same time accelerating slowly once moving allow the clutch lever to go its rest position OUT and ride away Do not accelerate too much unti...

Page 21: ... this period avoid prolonged use of the motorbike at high revolutions or in conditions that could cause overheating ACCELERATION Riding speed and acceleration is controlled by opening or closing the throttle Operating the twist grip toward you increases the speed and away from decreases the engine revolutions TO BRAKE SLOWING DOWN Close the throttle activate the front and rear brakes simultaneousl...

Page 22: ... it come back to its original position before changing gear again To put the motorcycle into first gear the pedal has to be pushed downwards to put in the 2 3 4 5 6 gears lift the lever up as far as it will go with the toe Gear changing should be done carefully to ensure the gear you want is selected before releasing the clutch CARBURETTOR The carburettor provides the correct petrol air mixture to...

Page 23: ...ds 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 19 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 19 ...

Page 24: ...e change the spark plug The correct plug is a DR8 DA D8 DA Before fitting a new spark plug check the gap between electrodes This gap must be between 0 6 0 7mm When installing the spark plug always clean the area around the plug hole to prevent any dirt etc from entering the combustion chamber Screw the spark plug in by hand trying to make sure that it is not cross threaded finally tighten it 1 8 o...

Page 25: ... 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 21 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 21 ...

Page 26: ...nds 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 It must be cleaned more frequently if the motorbike is used in humid or dusty places 22 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 22 ...

Page 27: ...ti clockwise to loosen the chain Turn the rear wheel several times and check the tension in various areas to find the point at which the chain is at its tightest point To check the chain adjustment the chain tensio ner must be pulled away from the chain The chain should have 35 45 mm of movement Chain tolerance 35 45 mm Chain tensioner manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 23 ...

Page 28: ...d grease the chain The chain is made up of many pieces which all work together If the chain is not maintained properly it will wear very quickly therefore it is advisa ble to grease the chain periodically with the correct chain lubricant Before lubrication it is necessary to clean the chain to remove the dirt and the mud with a brush or a cloth and then apply the chain lube to all the chain links ...

Page 29: ...d that the oil change operation be carried out while the engine is still warm as the sump will be cleaner and the oil will drain out with greater ease because it will be more fluid Remove the drainage screw and allow it to empty completely Replace the screw once it is empty and refill by removing the dip stick One litre must be poured in since if the motor is not started approxi mately 200 c c wil...

Page 30: ... stop water getting inside b Make sure that the spark plug and filler caps are fitted correctly 2 If the motor is very dirty or greasy use a degreasing agent Refer to note above Do not apply this to the wheel axles or the chain because that would remove any protective layer of lubricant 3 Using a hose pipe remove the degreasing agent and dirt but only with the pressure that is necessary DO NOT USE...

Page 31: ... stone chips on the frame to prevent further corrosion LUBRICATION Apply lubrication to all cables Chain and sprockets if necessary Plus a water repellent agent to all elec trical switches and exposed connections STORAGE Storage of the motorcycle for a long period of time demands certain care to prevent deterioration Once it is clean and lubricated prepare to store the motorcycle in the following ...

Page 32: ...s Check tension of wheel spokes and wheel alignment Clean and oil air filter Check and adjust carburettor if necessary Check and adjust spark plug or change it Check all screws and chassis screw plastic parts Check electric system lights horn and indicators etc Check wear on all bearings steering head and wheel Check coolant level of in radiator Check exhaust system Remove corrosion and paint Chec...

Page 33: ...gears Cylinders Engine capacity Piston size bore Starter system Lubrication system Oil type 4 stroke air cooled 5 gears 1 inclined forwards 124 c c 56 5 x 49 5 mm Electrical Humid case 4 stroke CASTROL TTS 20w 50 29 2150 mm 800 mm 1165 mm 890 mm 1405 mm 310 mm 110 Kg MRT MRT SM 125 AC 2070 mm 800 mm 1145 mm 870 mm 1380 mm 288 mm MRT MRT SM 125 AC manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 P...

Page 34: ...Bougie Type Electrodes separation DR8 DA D8 DA 0 6 0 7 mm Secondary transmission Front sprocket Rear sprocket Transmission relation Chain Z 15 Z 48 1 3 20 428 x 134 pas Air filter Humid rubber foam Carburettor DENI PZ26K Clutch type Multidiscs in oil bath 30 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 30 ...

Page 35: ... 1 40 4ª Z 23 Z 26 1 1 13 5ª Z 25 Z 24 1 0 96 Primary tree Secondary tree Gear change ratio 31 Suspension MRT MRT SM 125 Front Rear Upside down forks Ø 37 mm OIL FORK 15W 20 245 cc each leg Hydraulic shock absorber manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 31 ...

Page 36: ...21 with inner tube 1 7 kg cm2 110 80 18 with inner tube 1 8 kg cm2 100 80 17 1 8 kg cm2 130 70 17 1 9 kg cm2 Disc 260 mm Ø Disc 200 mm Ø Electric equipement System of ignition Generator Battery C D I Magneto AC 140 w 12 v From 3 Ah manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 32 ...

Page 37: ...ge and bulb output Light Rear pilot light Instrument cluster Indicators Odometer lighting 12 v 35 35 w H4 12 v 21 5 w 12 v 1 2 w 12 v 10 w Leds 33 manual usuari mtr 125 ang ok qxp 17 10 2012 12 14 Página 33 ...

Page 38: ...Pagina en Blanc qxp 22 07 2005 16 22 Página 1 ...

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