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  5. Owner's Manual

Baja 49CC DIRT RUNNER Owner's Manual

Summary of 49CC DIRT RUNNER

  • Page 1

    I 49cc dirt runner read this manual carefully . It contains important safety information. Children under the age of 16 should be supervised by a responsible adult. Always wear a helmet; it could save your life! Do not remove this operator’s manual from this vehicle. Please obtain, review, and follow...

  • Page 2

    Ii congratulations on your purchase of the baja motorsports dr50 dirt bike. Your bike is warranted to be free of manufacturing defects in the material of workmanship for a period of 90 days form the date of purchase. During the warranty period baja motorsports, llc will at its option, repair, provid...

  • Page 3

    Iii this manual should be considered as a permanent part of the vehicle and should remain with the vehicle when resold or otherwise transferred to a new user or operator. The manual contains important safety information and instructions which should be read carefully before operating the vehicle. Al...

  • Page 4

    1 safe operation......................................................................... 3 safety gear .............................................................................. 4 modification of vehicle........................................................ 4 main data...........................

  • Page 5

    2 please read this manual and follow all instructions carefully. To emphasize the special information, the symbol and the words warning or caution have some special meanings. Pay great attention to the messages. Note : indicating special information which is to make maintenance easier or instruction...

  • Page 6: Safe Operation

    3 safe operation rules for safe operation · a pre-operation check must be conducted, before starting the engine, insure safety, prevent mishaps, and damage to components. · it is strongly suggested that all operators take a certified motorcycle rider’s course prior to operating the vehicle. · full a...

  • Page 7: Safety Gear

    4 safety gear 1. Never operate this dirt bike without wearing a dot approved motorcycle helmet which fits properly. Operators should also wear eye protection (goggles or face shield), gloves, boots, long-sleeved shirt or jacket, and long pants. 2. Loose clothes are not suitable for motorcycle drivin...

  • Page 8: Main Data

    5 main data description data description data overall length 1625mm cylinder bore x stroke 39mm x 41.4mm overall width 690mm compression ratio 8.8 : 1 overall height 1085mm output, max 2.0kw/7500rpm wheelbase 1055mm torque, max 2.5n.M/6000r/min dead weight 65kg idling speed 1500r/min ± 150r/min payl...

  • Page 9: Parts & Subassemblies

    6 parts & subassemblies front brake lever throttle twist grip fuel tank cover.

  • Page 10

    7 front wheel front shock absorber fuel cock gear shifting pedal engine number side stand rear fork rear wheel seat cushion exhaust silencer kick lever rear braking pedal.

  • Page 11: Operation

    8 operation fuel cock fuel filling the capacity of the fuel tank is 5.9l in total including 1.0l of reserve. Unscrew the gas cap by turning it counter clockwise and carefully fill the tank with unleaded gasoline through the opening. Do not mix gas and oil together, this is a 4-stroke engine. Replace...

  • Page 12: Engine Starting

    9 engine starting set the key of the ignition switch to “ ” position. Put the dirt bike in the neutral gear. Ensure that there is fuel in the tank. Set the fuel cock handle to “on” or “res” position. To start a cold engine: pull up the choke bar of the carburetor (to close the choke). Rotate the thr...

  • Page 13: Breaking In The Engine

    10 breaking in the engine the first 600 miles of operation should be considered the “break-in” period and special attention shall be paid to the following points: 1. Take special care not to increase the rpm’s of the engine while climbing steep slopes. Never drive your dirt bike continuously for mor...

  • Page 14: Switches On Right Handlebar

    11 switches on right handlebar ignition switch the ignition switch is provided on the right handlebar. When the switch is turned to “ ” (off) position, the engine will not start or stops the engine. When the switch is turned to “ ” (on) position, the engine can start and the vehicle can be driven. T...

  • Page 15: Gear Shifting

    12 gear shifting a non-cycling mode of gear shifting is employed for this motorcycle. Reduce the throttle before shifting. Never increase the throttle while shifting gears. Do not place your foot on the gear-shifting pedal while operating the dirt bike to avoid damaging the clutch caused by sudden g...

  • Page 16

    13 check-ups, adjustment and maintenance checking the oil check the engine oil each time prior to operating the dirt bike. The oil level should be between the upper and lower lines of the oil gauge fitted in a screw plug, which is on the right cover of the crankcase. 1. Set the motorcycle on level g...

  • Page 17: Changing The Oil

    14 changing the oil * remove the “screw plug” located at the bottom of the engine and let the oil drain into an approved collection container. Do not perform this procedure while the engine is hot. Serious burns could result from contact with hot oil. Dispose of the used oil properly. For proper dis...

  • Page 18

    15 checking & cleaning the air filter take the air filter out and check if it is dirty or torn. Dismounting: wash the filter in clean water and wipe it dry with a clean cloth. Soak the filter element in clean machine oil. Squeeze it with a dry cloth to remove excess oil. Recommended oil: 15w/40qe ca...

  • Page 19: Adjusting The Throttle Cable

    16 adjusting the throttle cable make sure that the adjusting and lock nuts of the throttle cable work normally. Check if the throttle twist grip has the required free operating movement. The required free operating movement: 2-6mm. If the grip cannot be moved freely, turn the adjusting nut to ensure...

  • Page 20: Adjusting The Air Valve Gap

    17 adjusting the air valve gap the engine will make excess noise if the gap is too large in the air valve. If the gap is too small valve operation will be hindered which could result in valve malfunction and failure. Therefore, the air valve gap must be checked periodically. The gap of the air valve...

  • Page 21: Adjustment of Front Brake

    18 adjustment of front brake 1. The front brake lever has a free operating movement of 10-20mm as shown in the figure below. 2. Turn the adjusting nut beneath the front hub, clockwise to increase and counterclockwise to decrease the free operating movement. 3. It can also be adjusted by turning the ...

  • Page 22: Adjustment of Rear Brake

    19 adjustment of rear brake the vehicle should be supported for check by the side stand. 1. The rear brake pedal has a free operating movement of 20-30mm. 2. To make adjustment, turn the rear adjusting nut clockwise to reduce and counterclockwise to increase the free operating movement of the brake ...

  • Page 23

    20 greasing procedures to the driving chain 1. Shut off the engine 2. Add light amounts of machine oil or chain grease to the driving chain. (too much machine oil or chain grease may cause splattering to occur.) attention: the chain should be replaced when the adjusting limit has reached it’s maximu...

  • Page 24: Vehicle Washing

    21 vehicle washing cleaning the vehicle regularly can slow down the color fading of its body and make it easier to check if there is any damage and any oil leakage. After pre-wiping, the vehicle should be washed with clean water to remove dirty residues so as to prevent corrosion. Plastic subassembl...

  • Page 25: Instructions For Storage

    22 instructions for storage if the vehicle is not going to be used for a long period of time, for example, in winter time, some steps should be taken to prevent malfunction of and damage to its components which might be caused by long storage. Before storing the vehicle for a long period , proper ma...

  • Page 26

    23 resumption of service after storage 1. Remove the covering and remove the wooden blocks used in storing the vehicle. Change the engine oil if the vehicle has been out of service for over 4 months. 2. Drain off the remaining atomized anti-rust oil from the fuel tank, followed by filling it with fr...

  • Page 27: Resumption of Service

    24 resumption of service remove the covering and clean the vehicle. Change the lubricating oil if the vehicle has been off service for more than 4 months. Charge the battery, if applicable, and remount it. Drain off the anti-rust solution from the fuel tank, followed by filling fuel therein to the r...

  • Page 28

    25 item/ fr equency odometer km (note 2) 1000km 4 000km 8000km 12000km remark * cir cuit of fuel system i i i * fuel filter c c c c * thr ottle operating system i i i i * choke of carbur etor i i i air filter element i c c c spark plug i i i i * air v alve gap i i i i air v alve gap i i i i engine l...

  • Page 29: Electrical Principle Diagram

    26 electrical principle diagram gr b/w gr b/y b/y bl/w b/r gr b/w bl/w gr b/r b: black w: white r: red gr: green bl: blue.

  • Page 30

    Baja inc. – emission control system warranty your warranty rights and obligations the emission control system warranty period for this vehicle begins on the date the vehicle is de- livered to the first purchaser other than an authorized dealer, or the date it is first used as a dem - onstrator, leas...

  • Page 31

    Your emission control system warranty covers components whose failure would increase an en - gine’s emission, including electronic controls, fuel injection system, carburetor, the ignition sys - tem, catalytic converter, or any other system utilized in this vehicle to control emission if it is origi...

  • Page 32

    6. Physical damage, corrosion, or defects caused by fire, explosions or similar causes beyond the control of the distributor. 7. Failures not caused by a defect in material or workmanship. Use of the vehicle in any type of competitive racing or related events immediately and completely voids this an...

  • Page 33: Baja Inc.

    Baja inc. P.O. Box 61150 phoenix, az. 85082 tel: 602-443-9180 toll free: 888-863-2252.