URAL Motorcycles L4 SERIES Owner's Manual
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URAL Motorcycles L4 SERIES Owner's Manual

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Summary of Contents for URAL Motorcycles L4 SERIES

  • Page 1 Motorcycles Category L4 Owner Manual...

  • Page 2: Table Of Contents

    Content I n t r o d u c t i o n ................. . 5 - 6 Motorcycle controls and controlling devices......7-8 Getting-ready of your motorcycle for use......9-10 D r i v i n g t h e m o t o r c y c l e .
  • Page 3 Motorcycle IMZ-8.1034/37 Classic...
  • Page 4 Motorcycle IMZ-8.1034/37 Sportsman...

  • Page 5: Introduction

    1.1. Motorcycles URAL with sidecar manufactured by Irbit Motorcycle Plant are of heavy-duty class of L4 Category and are designed to transport passengers and goods in various environments. 1.2. The upper part of the right hand frame pipe has VIN-code (Vehicle Identification Number) which is to be read from bottom to up.

  • Page 7: Motorcycle Controls And Controlling Devices

    2. Motorcycle controls and controlling devices Fig 2. 1-Ignition lock; 2- Steering lock; 3-Fuel cock; 4-Gear shift pedal; 5- Kick starter pedal Fig 2a. 6-Side car drive shift lever; 7-Neutral gear lever; 8-Brake pedal...
  • Page 8 Fig. 2b 9- Clutch lever; 10-Light switch; 11- Turn signal switch; 12-Horn button; 13-High beam telltale; 14-Alternator telltale; 15-Speedometer; 16-Turn signal telltale; 17-Odometer reset button; 18- Neutral gear and reverse gear telltale; 19-Damper bolt; 20-Starter button; 21-Day-Night switch; 22-Ignition kill switch; 23-Front brake lever; 24-Throttle twist grip; To prevent your motorcycle from unauthorized use, the steer- ing lock with individual key is provided on the LH side of frame head pipe.

  • Page 9: Getting-Ready Of Your Motorcycle For Use

    3 Getting-ready of your motorcycle for use 1. Charge the battery, mount it onto the motorcycle and connect to the circuit with minus pole to the “ground”. Please, read in details the Instruction Manual for Battery before putting the battery into oper- ation.
  • Page 10 To better start-up the engine, operate the choke of the carbure- tor and shut it off after the engine starts (see Fig. 3b) . There is no need to enrich the mixture or use the choke when the weath- er is warm or engine is warmed up. The following specific features should be taken in consideration whilst starting up the engine with electric starter: -When starting the engine in the cold weather set the carbure-...

  • Page 11: D R I V I N G T H E M O T O R C Y C L

    4. Driving the motorcycle Check the motorcycle for operable condition before starting up the engine, which includes neutral gear po- sition, fuel level in the gas tank, controls functioning. Open the fuel valve and fill the float chambers of car- buretors with gas.
  • Page 12 To have the motorcycle turned use the countersteering and then leaning the motorcycle over to the direction of the turn (bikes used without side-car). The side car driver compensates by leaning body weight toward the turn and applying force to the handlebars. If the road is slippery do not turn sharply, neither roll the throttle on like a shot.

  • Page 13: Engine Design And Engine Maintenance Tips

    5. Engine design and engine maintenance tips URAL Motorcycles have 4-stroke, 2-cylinder, air cooled engine of carburetor type. The general view of the engine is shown on Fig. 5. Fig. 5. Engine maintenance. Whilst daily inspection of the engine, do the following: -Remove dirt and dust from the engine paying special attention to the cooling fins as dirty fins do not cool the engine sufficiently.

  • Page 14: Lubrication System

    VALVE ADJUSTMENT The thermal gap between valve stem and pushing arm of the rocker should be between 0,1…0,15 mm (see Fig. 5a). The valve should be adjusted after valve grinding or disassembly of timing gear mechanism. To adjust the valves, proceed as follows: -Remove the cylinder head cover and drain the oil from it.

  • Page 15: Air Filter

    Fuel supply system Fuel valve The fuel valve lever has three positions (Fig. 7). Open for fuel feed Closed III- Open for reserve fuel feed The reserve is about 2 L gas. Fig. 7 Fuel valve Air filter To clean the air supplied to carburetors, motorcycles IMZ-8.1034/37 have air filters with dry paper insert requiring no maintenance during service life (Fig.

  • Page 16: Carburetor Adjustment

    Carburetors The engines uses two L 22 AA Keihin carburetors (Fig. 9), Fig. 9. General view of carburetor Carburetor adjustment To adjust L 22 AA Keihin carburetors, proceed as follows: 1. Using cable adjustment screw, provide free travel of 2…3 mm between cable sheath and throttle cable adjustment screw(Fig 9a).

  • Page 17: Carburetor Maintenance

    Fig.9a 1-Starting compensator lever; 2-Throttle lever; 3-Throttle cable stop; 4-Vacuum piston nipple; 5-Float chamber unbalancing nipple; 6-Float chamber nipple; 7- Throttle adjustment screw; 8-Idling adjustment screw; 9. Adjust steady operation of cylinders using cables adjustment screws by alternatively shutting down cylinders (HV wires must be grounded during these operations).
  • Page 18 Microprocessor Ignition System The Microprocessor Ignition System (Fig 10) is designed for work with the electrical system of 2-cylinder carburetor engines of Ural motorcycles, having nominal voltage of 12 V Technical Specification Bolt M6-12 With ignition on and engine off the input current is not more than 0.1 A.

  • Page 19: Ignition Timing

    Induction coil Black The light emitting diode The unit Á Ì Ñ Ç Fig. 10a. Wiring diagram of microprocessor ignition system Ignition timing To time the ignition, proceed as follows: -Match the first arrow (having the point) on the flywheel with mark M3 on the engine crankcase. -Loosen the fastening screws of the microprocessor unit and turn it counterclockwise until it stops.

  • Page 20: P O W E R T R A I

    6. Power Train The power train of the motorcycle consists of clutch, gearbox, drive shaft and main drive. The clutch is of two-plate dry type. The normal free travel of the clutch lever ensures full engagement and disengagement of the clutch. Adjust the free travel of the clutch using two adjustment screws on the end of the clutch cable.
  • Page 21 -Depressing the pedal once again, engages the III gear. -When the lower stop is adjusted correctly the quadrant turns to required angle and locks again in Pos.2 (Fig. 11) When the stop is maladjusted the roller after turn would not get into flute, Pos. 3 and 4 (Fig. 11). It can be easily found by turning the projecting end of the quadrant this or that way using 10 mm-wrench.
  • Page 22 Drive shaft. The drive shaft of IMZ-8.1034/37 consists of flexible joint, the propeller shaft and the universal joint. Also IMZ-8.1034/37 motorcycles may have side car drive connected to the main drive. Main drive and drive shaft maintenance. F i l l e r The preventive maintenance involves tightening up of the nuts fastening the main drive to the swinging arm.

  • Page 23: R U N N I N G G E A

    7.RUNNING GEAR The running gear includes motorcycle and sidecar frames, front fork, and suspension of rear wheels and sidecar wheel. Motorcycle and sidecar frames The frame is the main supporting element of the motorcycle on which all the parts and components are mounted.

  • Page 24: Front Fork

    Front fork The front fork is of telescopic type with internal springs and the double-action hydraulic shock absorbers (Fig.14). Fig. 14. Front fork 1-Protective washer; 2- Seal; 3- Cross- piece; 4-Steering column stem nut; 5-Support- ing washer; 6- Spring washer; 7-Tightening bolt; 8-Steering column stem;...
  • Page 25 The front wheel fender may be mounted either onto protective covers or to fork leg tips. Each front fork leg is filled through openings under tightening nuts (2) with 135 cubic centimeters of oil used for engine(Fig 14, item 11) The motorcycle can also mount leading link fork with two spring and hydraulic shock absorbers, having advantages over back roads.

  • Page 26: Rear Suspension

    Rear suspension Motorcycles IMZ-8.1034/37 have rear wheel suspension of swing arm type. The wheel is guided in rela- tion to the frame by swing arm. The vertical loads on the wheel are taken up by two hydraulic and spring shock absorbers. The absorbers are comprised of springing member which is the spring and absorber it- self.
  • Page 27 Wheels Two adjustable tapered roller bearings are pressed into the wheel hub, which are prelubricated with LITOL- 24 type grease. Depending on motorcycle version the wheels with aluminum cast brake drum may be used on the motor- cycle, having spokes of equal length (Fig. 17). The adjustment of bearings is the same.

  • Page 28: Adjustment Of Sidecar Installation

    Adjustment of sidecar installation The sidecar should be installed in a strictly definite position relative to the motorcycle. The camber and toe- in of the motorcycle and sidecar wheels determine this position (Fig.18). When the motorcycle does not keep the road well and is heavy in steering, check the camber and toe-in.

  • Page 29: C O N T R O L

    8. CONTROLS OF THE MOTORCYCLE The controls of the motorcycle include handle bar and control drives for throttles, clutch, gear box and brakes. Handlebar and control drives The handle bar (Fig. 19) is connected to the front fork by means of two brackets. The handle bar can be adjusted the way to provide the most comfortable posture for the driver.
  • Page 30 b) For brakes: the free travel of front brake lever end of 5…8 mm and free travel of foot brake pedal of ¼ of turn or 25…30 mm. The front wheel brake is adjusted with adjusting screw on the brake drum cover, see Fig.20ã. Fig.

  • Page 31: E L E C T R I C A L E Q U I P M E N

    9.ELECTRICAL EQUIPMENT The electrical equipment of the motorcycle is combination of devices to ignite air-and-fuel mixture, to start the engine and to provide lighting and audible and lamp signaling. The system has two power sources: battery and alternator. The circuit is of one-wire type with negative to the “ground”.

  • Page 32: Electric Starter

    Electric starter. The motorcycle is equipped with electric starter of the type of 391.7708 with solenoid drive and push button on the handle bar. The output of the starter is 1,0 kV. Horn . The horn of the type of 20.3721 is used în the motorcycle. The horn is operated with the button located on the left handle bar.
  • Page 33 Electrical equipment maintenance Alternator maintenance Check routinely the condition of wiring and fastening of the wiring to alternator terminals, and clean them. Check the tightness of coupling screw of alternator covers and fastenings of the alternator to engine crank case studs after 10000 km. The alternator has prelubricated bearings with in-built seals. After 20.000 km the generator must be cleaned from copper and brush dust.

  • Page 35: A U X I L I A R Y E Q U I P M E N

    10.AUXILIARY EQUIPMENT The motorcycle can be extra equipped with the following, see Fig. 24 -Rack carrier -RH rear view mirror -Driver and sidecar windscreens -Leg mud guards -LH cylinder protection bar -Side decorative panels -Hand wind protectors Fig.24 Auxiliary equipment of the motorcycle 1- Leg mud protection;...

  • Page 36: Exhaust System

    Fig. 25 Exhaust system Fig. 25 shows versions of exhaust system that are marked by manufacturer in accordance with ECE Regulation. Exhaust system with swept-up silencers. Exhaust system of types 2 or 2-in-2 horizontally arranged.
  • Page 40 12. PREVENTIVE MAINTENANCE OF MOTORCYCLE The preventive maintenance of motorcycle should be done after certain run disregard the technical con- dition of the motorcycle. The system of preventive maintenance includes: everyday inspection before or after driving Maintenance during running-in period Preventive maintenance every 2,500 km (PM1) Preventive maintenance every 5,000 km (PM2) Preventive maintenance every 10,000 km (PM3)
  • Page 41 STORAGE To store the motorcycle for a long period of time put it on blocks. The tire pressure must be 0,05…1,0 MPa. . Never put the motorcycle close to acids or bases, mineral fertilizers and other aggressive agents. Start the motorcycle and make it work with fuel cock closed to empty the float chambers of carbure- tors.

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