JTG JT300 User Manual
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JTG JT300 User Manual

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JTG JT300
USER MANUAL

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Summary of Contents for JTG JT300

  • Page 1 JTG JT300 USER MANUAL...
  • Page 3 Thank you for the confidence you have shown in our brand by purchasing this motorcycle designed for Trial. As a JTG user, you will enjoy a product that offers innovation where strictly necessary, without excesses, incorporating characteristics such as quality, prestige and exclusivity.
  • Page 4 In addition to the specific warning notes, this manual also contains other tips for better use of your motorcycle as well as better adjustment and control of important features of the vehicle. JTG reserves the right to modify this manual.
  • Page 5  This motorcycle uses synthetic two-stroke oil mixed with 98-octane fuel in a 1% proportion. Do not use any other type of lubrication without first consulting with an authorised JTG mechanic.  This motorcycle is designed to carry only one person; it is not permitted to carry a passenger.

  • Page 6: Table Of Contents

    TABLE OF CONTENTS Description of parts Sparkplug Technical datasheet Cooling system Vehicle information Carburettor Starting and stopping the engine Adjusting the tick over The choke Reed valve box Gear change Transmission chain Fuel tap Suspension Fuel tank Swing arm Tyres Maintaining the motorcycle Brakes Speedometer...

  • Page 7: Description Of Parts

    DESCRIPTION OF PARTS 1- Clutch lever 6- Fuel tank cap 12- Rear brake pedal 2- Indicator, horn and stop 7- Starting pedal 13- Engine breather buttons 8- Fuel tank 14- Fuel tap 3- Brake lever 9- Radiator 15- Reed valve 4- Accelerator 10- Radiator drainage bolt 16- Transmission chain...
  • Page 8 19- Front fork 25- Front mudguard 31- Rear sprocket 20- Spark plug 26- Front brake caliper 32- Speedometer 21- Silencer 27- Ignition cover 33- Front suspension adjustment 22- Swing arm 28- Air filter cover 34- Footrests 23- Exhaust pipe 29- Carburettor 35- Rear mudguard 24- Water pump 30- Centre stand...

  • Page 9: Technical Datasheet

    TECHNICAL DATASHEET CHASSIS Type: Double beam with lateral suspension system and built-in fuel tank TYRES Front: 2.75 x 21" - 44 (160 kg) L Rear: 4.00 x 18" - 52 (200 kg) - L SUSPENSION Front: TECH Hydraulic telescopic fork COM-EX Ø39 mm (175 mm travel) Rear: V3 progressive system with OLLE mono adjustable shock absorber (175mm travel) BRAKES Front: Disc, Ø185 mm, 4-piston caliper...
  • Page 10 Type: 5-speed with hydraulically operated clutch. Secondary transmission: Chain. Gear ratios: 3.000 (33/11) 2.571 (36/14) 2.187 (35/16) 1.444 (26/18) 0.889 (24/27) Primary reduction 2.778 (75/27) Final reduction 4 (40/10) Total ratio (5 gear): 9.879 Transmission oil: 400 cc, type GEAR TRANS 0W75 DIMENSIONS Overall height: 1160 mm Overall width: 833 mm...

  • Page 11: Vehicle Information

    VEHICLE INFORMATION MANUFACTURER’S IDENTIFICATION PLATE (Under the fuel tank) This plate contains information regarding vehicle certification, take note of this for easy identification of your vehicle, when needed. SERIAL NUMBER AND KEY CODE These numbers identify your motorcycle and the steering lock, take note of them in this manual (e.g.

  • Page 12: Starting And Stopping The Engine

    STARTING AND STOPPING THE ENGINE THE CHOKE Use the choke when the engine is cold to start without causing damage to the engine. This device, when used properly, will avoid excessive wear and mechanical damage when starting in cold temperature. To activate it, lift the black lever on the carburettor.

  • Page 13: Gear Change

    GEAR CHANGE FUEL TAP The fuel tap is under the fuel tank. The gear change is controlled by a pedal on the left-hand For the fuel to flow, the tap must be in the ON position. For side of the vehicle, the sequence is as indicated in the reserve, select the RES position and to shut of the flow, illustration.

  • Page 14: Fuel Tank

    FUEL TANK Important. Do not mix vegetable and mineral oil. Respect the specified levels and proportions for correct combustion. For a homogeneous mix, first pour the oil into a container and add some petrol, shake and then add the mixture to the rest of the petrol. Avoid mixing at low temperature, as this will make the operation more difficult.

  • Page 15: Tyres

    TYRES TYRES Front wheel: 2.75 x 21" TRIAL Rear wheel: 4.00 x 18" TRIAL RECOMMENDED TYRE PRESSURES Front wheel: 0.45 bar (0.42 bar for competition) Rear wheel: 0.35 bar (0.3 bar for competition) Tyres in good state will significantly contribute to When riding on low adherence terrain, you can reduce the your safety and will guarantee better driving pressure slightly in order to favour adhesion and vice-...

  • Page 16: Brakes

    BRAKES The brake fluid level can be checked through the peephole on the front master cylinder and the fluid reservoir of the rear master cylinder. The level must reach the middle, fill both reservoirs if necessary. Use D.O.T. 4 brake fluid. There are bleed nipples on both circuits in order to eliminate air bubbles that could have entered the system You should regularly check the state of the front...

  • Page 17: Steering Lock

    STEERING LOCK SIDE STAND The steering lock is located under the lower front fork triple clamp. To lock the steering, insert the key and turn the handlebars right as far as they will go, then press and turn the key anti-clockwise. The side stand is on the right of the motorcycle, secured to To unlock, insert the key and turn clockwise.

  • Page 18: Handlebar And Instrument Panel

    HANDLEBAR AND INSTRUMENT PANEL The left-hand side of the handlebar contains: The instrument panel is in the centre The right-hand side of the handlebar of the handlebar. (More information contains: Clutch lever. and instructions for use provided Horn. later in the manual) Brake lever Engine stop button.

  • Page 19: Adjusting Levers And The Handlebar

    ADJUSTING LEVERS AND THE HANDLEBAR CHECKING THE OIL LEVEL Both levers must have a free play of 3 mm at the most. This play must be present, do not eliminate it. To adjust, use the adjustment nuts located on the levers. The engine holds 400 cc of transmission oil.

  • Page 20: Air Filter

    AIR FILTER Oil change There is a plug at the bottom of the sump for emptying the another plug filling. To change the oil, start up the cold engine and let it tick After removing the filter, it can be cleaned using a over for 5 minutes.

  • Page 21: Sparkplug

    The location of hatch on the left-hand side of the SPARK PLUG motorcycle offers easy access to the air filter. Take care with the filter foam when dismantling, as it is easily damaged. Access the air filter through the hatch and dismantle its securing elements.

  • Page 22: Cooling System

    COOLING SYSTEM Regularly check the radiator inlet and outlet tubes for impacts, cracks or leaks that could compromise the cooling. Also check the radiator alloy fins. For correct operation of the engine, make sure the level of the coolant is correct. You can top up the radiator tank Do not forget that the radiator can get very hot, when (preferably with the recommended coolant) through the manipulating, take care and let it cool down after...

  • Page 23: Carburettor

    any steam escape. Then open the cap completely and top CARBURETTOR up the fluid (if necessary) until it is just below the rubber. The carburettor should be checked after a certain time, The coolant supplied in the factory is a permanent mix of cleaning it and drying with compressed air so as to improve its performance.

  • Page 24: Adjusting The Tick Over

    Air-fuel mixture An optimum petrol-air mixture will enable you to obtain the ADJUSTING THE TICK OVER maximum performance from your engine. For this purpose, the amount of air and fuel entering the carburettor must be adjusted. A good way discover the quality of the mixture is to inspect the spark plug.

  • Page 25: Reed Valve Box

    REED VALVE BOX TRANSMISSION CHAIN Admission is through a reed valve, the state of which has a significant influence on the performance of the engine. Whenever the carburettor is removed for cleaning, make sure the reed valves are not worn and if so, replace the box with a new one.

  • Page 26: Suspension

    Correct tension of the chain should allow a play of SUSPENSION approximately 10-15 mm in the area between the frame and the tensioner. To tension the chain, first loosen the rear wheel axle nut and then adjust the chain using the tensioner adjustment bolts, which are in the swing arm.

  • Page 27: Swing Arm

    SWING ARM The preload of the spring can be adjusted by turning the castellated nut at the base of the shock absorber. It is also possible to adjust the hydraulic brake of the shock absorber with a bolt at the top. This bolt must be in the middle of its For correct maintenance of the rear suspension system travel in normal adjustment.

  • Page 28: Maintaining The Motorcycle

    MAINTAINING THE MOTORCYCLE The greater the care given to the motorcycle, the longer its service life will be and the better it will perform. Check all the elements listed below and keep them clean and lubricated for optimum service: LEVER ARTICULATIONS REAR BRAKE PEDAL GEAR LEVER FOOTRESTS AND SIDE STAND...

  • Page 29: Speedometer

    SPEEDOMETER These are the most important features of the control panel and speedometer fitted to your motorcycle:...
  • Page 30 These are its features: Max. speed Overestimation Resolution Updated Impulses/revolution 300 Km/h (186 Mph) 4% constant 1 Km/h (1 Mph) Every 500ms The basic functions (Always visible and cannot be deselected from the setup menu) of the panel are: Current speed (SPEED) Total distance covered (ODO) Total time of vehicle operation (H) SPEED function...
  • Page 31 ODO function Clock function (CLK) This information can only be seen by pushing the This function indicates the current time in "hh:mm:ss" MODE button, regardless of whether the vehicle is format. The clock remains active even when Sleep stationary or in movement. The predetermined Mode is activated.
  • Page 32 Trip, Average speed and Automatic Chronometer Manual Stopwatch function(LAP) functions (TR1, A1 and S1) This function enables you to activate or deactivate a These functions indicate the partial distance covered, stopwatch manually, either if the vehicle is stationary average time and the time the vehicle has been on the or in movement.

  • Page 33: Torque Values

    TORQUE VALUES ELEMENTS FASTENED Cylinder stud fasteners Reed valve fasteners Swinging arm-Chassis 40-50 Clutch spring fasteners Upper shock absorber fastener 40-50 Sump fasteners Lower shock absorber fastener 40-50 Water pump cover fastener Front wheel axle 40-50 Clutch cover fasteners Connecting rods 40-50 Flywheel fasteners Handlebar...

  • Page 34: Storage

    STORAGE If it is necessary to store the motorcycle for a long period of time, the following operations are recommended before storage:  Clean the whole vehicle.  Lubricate or grease the components that need it.  Empty the fuel tank. (Take care with the fuel, which is inflammable and toxic) ...

  • Page 35: Maintenance Operations

    MAINTENANCE OPERATIONS (NOTE: Bear in mind that a clean motorcycle will facilitate inspection and detection of faults and wear) COMPONENT CHECK ADJUST REPLACE CLEAN LUBRICATE Rear shock absorber Annually Every 2 years Front fork suspension oil Transmission oil Every time it is Whenever Brake adjustment used...
  • Page 36 Whenever Carburettor jet If damaged necessary Steering bearing If damaged Piston bearing If damaged Wheel bearing If damaged Engine bearings If damaged Every time it Rear sprocket First 5h If damaged is cleaned Cylinder head and cylinder Annually Every time Whenever Brakes If damaged...
  • Page 37 Whenever Coolant Annually necessary Every time Every time Every time it General lubrication used used is cleaned Every time Front and rear wheel If damaged used Every time Every time Tyres If damaged used used Whenever Brake fluid level necessary Chain guide slipper If damaged Every time it...
  • Page 38 necessary Every time Whenever Petrol tube If damaged used necessary Every time Whenever Radiator tube and joints If damaged used necessary Chassis protective adhesive elements If damaged Sump protector If damaged...

  • Page 39: Homologation

    HOMOLOGATION All the components fitted in this vehicle comply with legal homologation requirements, including the identification marks on part that require them. Pay attention to the component that are compulsory for using the motorcycle on public roads and must be present on the vehicle in order to pass the Vehicle Technical Inspection Test: Registration plate holder Speedometer...

  • Page 40: Troubleshooting

    TROUBLESHOOTING (IMPORTANT NOTE: For all internal adjustments or replacement of parts that are not normal wearing components it is recommended to take the motorcycle to an authorised workshop. Bear in mind that unskilled manipulation of the motorcycle can be dangerous for you and/or possibly render the guarantee void.) PROBLEM POSSIBLE CAUSES ACTIONS...
  • Page 41 Engine makes strange noises - Ignition problems. - Take motorcycle to an authorised - Overheated engine. workshop. - Stop the engine and check the state of the cooling and exhaust systems. Engine lacks power - Admission problems. - Clean the fuel admission system and air filter.
  • Page 42 - Clutch springs broken or weak. - Take bike to a specialised workshop. - Take bike to a specialised workshop. Gears engage badly - Problems in forks, gears or additional - Take bike to a specialised workshop. gearbox systems. Abnormal noises - Worn or badly adjusted chain - Adjust or change chain.
  • Page 43 - Rear shock absorber badly adjusted. Handlebar vibration - Worn tyre, swinging arm or bearings - Take bike to a specialised workshop. worn. - Rim out of true. - Take bike to a specialised workshop. - Badly aligned wheel. - Take bike to a specialised workshop. - Steering shafts, handlebar supports or - Tighten nuts and fasteners to fasteners with play.

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