Racing 45 (English)
Contents
1. OMOS Racing NAVODILO ZA UPORABO USER S MANUAL TOMOS USER S MANUAL YOUNGST R YOUNGST R FULL RACING 45 CONTENTS Warnings Riding Safety Tips Technical Specification Technical Description Vehicle operation Fuel Engine Starting Riding Engine Running In Maintenance Maintenance Operations Lubricants Gearbox Oil change Checking Brake Pads Checking Brake Fluid Fuse Replacement Cleaning Fuel System Cleaning Exhaust System Cleaning Vehicle Cleaning Checks and Adjustments Engine Oil Level Check Bowden Adjustment Transmission Chain Adjustment Bolt and Nut Tightness Maintenance Schedule Battery Installation Troubleshooting Fuel System Troubles Ignition System Troubles Troubles Causing Reduced Engine Power Gearbox Troubles Electrical System Diagram WARNINGS Prior to operating the vehicle carefully read this User s Manual in order to get acquainted with its operational characteristics and safe and proper operation 1 Fuel is extremely flammable and explosive therefore it requires special handling precautions Stop the engine prior to refilling the tank Fill the tank outdoors never approach the tank with a lit cigarette open flame or sparks and Thoroughly wipe off any spilled fuel 2 The engine should not be run in an enclosed space or nearby entrances to lower level areas cellars etc Engine exhaust gases are toxic and denser than normal atmospheric air 3 When starting or running the engine2. never touch the ignition coil high voltage cable ignition spark plug cap or other parts of the electrical system 4 The vehicle is equipped with a catalysts exhaust system causing high temperatures When the engine is running and for some time after it has stopped do not touch its hot parts the cylinder the cylinder head exhaust silencer Do not touch the brake components too 5 When the engine is running beware of the engine s rotating parts No modification of the vehicle stripping off any parts or installing non original spare parts is permitted The vehicle owner is specifically warned that any modification to the exhaust system can only result in the vehicle s deteriorated operation without any positive effects on engine performance and causes higher air pollution RIDING SAFETY TIPS Riding a twowheeler is simple yet it requires some skills and experience which can only be accumulated progressively Prior to each ride observe the following rules 1 Check the proper functioning of all vehicle assemblies 2 When riding wear light colored preferably light reflective clothes ride with your lights on avoid riding in other drivers blind spots to prevent danger of other drivers overlooking you 3 Abide by all traffic regulations above all adjust your riding speed to the road conditions and your skill level 4 Do not hand the vehicle over to any inexperience riders 5 Prior to changing lanes always check that thi
3. slides particularly in cold weather Improper oil type in the gearbox change with the specified oil The clutch takes excessively long to switch to the second gear or does not switch at all Reduced engine power clean the exhaust silencer The clutch is stuck try to activate the clutch at higher engine revs with the vehicle propped up on a stand Excessive amount of oil in the gearbox check the oil level After engaging the second gear the clutch jerks Chain is too loose adjust the chainO tension Low gearbox oil level top up to the specified level With the engine shut down it is difficult to move the vehicle forwards backwards Have the trouble examined by an authorized service agent 22
4. 2 5 100km 6 1 1 0 kW at 3500 min 3 1 Nm at 2500 min 20 km h 2 8 100km 12V 170W Fuel Tank capacity Engine oil reservoir Fuel consumption Suspension Front forks travel Rear shock absorber travel Wheels Front tire dimensions Rear tire dimensions Front tire inflation pressure Rear tire inflation pressure Electrical Magneto system Spark advance Spark plug A24B Spark plug A24D A24E Sparlk plug A26BAC Spark plug electrode clear Headlight Tail light Stop light Speedometer illumination 3 5 1 0 5 reserve 800 1 8 100km 70 mm 16 mm 120 70 12 120 70 12 Dimensions And weights 2 3 bar 2 8 bar 12V 80W preset Bosna F75 BOSCH W7AC Bosna F75 Champion L86 BR8ES or equivalent 0 8 mm 12V 35W 35W 12V 4W 12V 5W 12VA0W 12V 2W Direction indicators version 12V 10W Direction indicator signal light 12V 1 5W Oil level signal light 12V 1 5W Low beam signal light 12V 1 5W Main beam signal light 12V 1 5W Battery version 12V 4Ah Fuse version 8A Wheelbase 1 155 mm Total length of vehicle 1 655 mm Vehicle mass empty fuel tank 62 3 kg Maximum permitted total weight 160 kg OONOORWND TECHNICAL DESCRIPTION Rear brake lever Direction indicator switch version Horn switch Main beam low beam switch Speedometer Brake fluid reservoir STOP switch Electric start pushbutton version Throttle lever Front brake lever Direction indicator sig
5. aning 6 Spark plug As necessary 19 Tire pressure gt DEED front and rear 2 3 bar 7 Air filter oiling e e 19 Chain tension 8 Cylinder head piston head exhaust duct e E 9 Cylinder and exhaust pipe e 20 Idle run and throttle 21 Bolt and nut tightness 19 BATTERY INSTALLATION VERSION Battery is placed under the rear luggage carrier A Fig 18 Release the two bolts B Fig 18 and from the bottom side of the luggage carrier pull out the plastic box for battery Place the battery in the box with the connection shoes upwards Applying the bolts supplied with the battery connect the blue color electric cable to the blue color battery connection shoe and the red color electric cable to the red color battery connection shoe Caution When placing the battery box under the mudguard take care that cables are placed into the groove on the left side of the battery box C Fig 19 Fig 18 20 TROUBLESHOOTING Fuel System Troubles Possible causes of the engine failing to start or stopping during a ride Include but are not limited to Fuel is not supplied to the carburetor Check the fuel tank level and the position of the fuel cock Clogged fuel strainers Blow the strainers clean Clogged carburetor main jet Remove and blow clean Improper use of the choke lever Use the lever in accordance with the engine start instructions Low engine idle speed setting Usin
6. econd gear is done by opening or closing the throttle Avoid switching too frequently between first and second gears In such situation you should instead reduce the throttle opening and keep the vehicle in first gear When descending a slope shortly open the throttle from time to time in order to improve lubrication and headlight operation The vehicle is shut down by closing the throttle lever and switching the STOP button to the position off 7 Fig 6 Then close the fuel cock position A Fig 7 If the vehicle is to stay out of operation for a longer period e g during winter draining of the fuel from the carburetor cup in the following way is recommended close the fuel cock and by opening the throttle lever let the engine run out automatically Engine Running in Do not run the engine at full throttle during the initial 100 km Later increase the engine loading progressively 12 MAINTENANCE Maintenance Operations The vehicle is easy to maintain yet maintenance is imperative for perfect performance Particularly important operations include regular lubrication of individual assemblies gearbox oil changes cleaning of parts affecting engine operation spark plug exhaust system fuel system and checking of safety related riding components tire pressure operation of lights and brakes tightness of bolts and nuts The maintenance table defines maintenance works in certain intervals in km and months consider whichever c
7. g the adjustment bolt A Fig 8 increase the engine speed Ignition System Troubles Check the spark Possible causes of the ignition spark plug failing to produce a spark include Wet spark or electrodes in a short circuit Spark plug electrodes frequently in a short circuit Clean soot build up from the cylinder head and piston head Spark plug electrodes are worn out Adjust the electrode clearance according to the specifications or Replace the spark plug with a new one Spark plug cap improperly mounted or short circuiting to the Ground mass Properly mount the cap on the spark plug or replace with a new cap Ignition coil Have the trouble examined and remedied by an authorized service agent Troubles Causing Reduced Engine Power Possible causes of reduced engine power and reduced vehicle road performance include Inadequate spark plug or cylinder head tightness Tighten the spark plug or the cylinder head nuts Clogged air cleaner on the carburetor Wash in gasoline blow dry and oil lightly Clogged exhaust system clean 21 Gearbox Troubles Following the start the engine runs at idle speed If opening the throttle fails to engage the clutch Release the throttle and attempt to start the vehicle again the oil is still cold and thicker When riding open the throttle gradually to prevent engine jerks If the problem is frequent have it repaired by an authorized service agent The clutch
8. losed press the rear brake lever and press the kick starter lever 24 Fig 4 without opening the throttle If starting the engine when it is still warm the throttle must be fully opened Pedal version With the throttle fully closed press the rear brake lever and press the pedals 24 Fig 4 backwards without opening the throttle If starting the engine when it is still warm the throttle must be fully opened Electric starter version Enter the key in the ignition switch 27 Fig 4 and turn it to the ON position Switch on the stop switch 7 Fig 6 With the throttle fully closed press the rear brake lever and press electric start pushbutton 8 Fig 6 10 Caution If the engine on the electric start version fails to start release the starter pushbutton This prevents the battery from draining Do not keep the engine start pushbutton depressed longer than 5 seconds Should the electric starter fail to start the engine start the engine by using the kick starter pedal When using the choke allow the engine to run for 10 to 20 seconds without opening the throttle The choke start lever disengages automatically when the throttle is opened on the version A26BAC must be disengaged manually In the case the engine is hot do not use the choke lever Fig 7 11 Variant A24B A24D A24E Fig 8 Variant A26B Riding The speed is controlled by the throttle lever 9 Fig 1 Engaging the first or s
9. nal light version Oil level signal light version Main beam signal light Low beam signal light Luggage carrier Engine oil reservoir cap Battery version Air filter Carburetor choke Fuel tank cap Steering lock Fuel petcock Oil pump version Kick starter pedal Fuse version Fuel filling vent Ignition switch version Fig 1 Fig 2 Fig 4 rig 5 Fig 5 Fig 6 VEHICLE OPERATION Fuel EUROSUPER 95 and two stroke engine oil Your vehicle is equipped with an oil pump which adds a specified amount of oil to the petrol approx 2 Pour two stroke oil into the separate oil reservoir 16 Fig 3 approximately 0 8 liter Use only high quality fully synthetic two stroke oil CAUTION Prior to starting the engine for the first time fill the fuel tank 20 Fig 3 with approx 1 liter mixture of two stroke oil and gasoline in the ratio of 1 50 295 then start the engine and let it run for at least 8 minutes in order to allow the oil pump to fill the suction pipe Before this take off the oil pump cover 23 Fig 4 and unscrew the bolt on oil pump A Fig 5 and wait till oil comes from reservoir Tighten the bolt Engine starting Open the fuel cock Fig 7 Note A fuel supply shot B fuel supply on C reserve If the engine is cold press the cold start lever B Fig 8 Kick start version With the throttle fully c
10. omes first for the period up to 20 000 km or 24 months Lubricants For the gearbox apply the automatic gearbox oil ATF A or ATF F For lubrication of other vehicle components see the maintenance schedule application of SAE 30 grade engine oil and LIS 2 grease is recommended Gearbox Oil Change Oil should be changed when the engine is still warm Remove the right side shield release three threaded plugs 1 2 3 Fig 9 on the right side of the engine casing and let the oil drain completely Retighten oil draining plug 3 Fig 9 and pour approx 300 cm of oil through the refilling opening 1 Fig 9 so that oil level reaches the control opening 2 Fig 9 Then retighten the oil refilling and control opening plugs 1 13 Checking brake pads Brake pads are checked visually The pads should be replaced by an authorized service agent as soon as the brake pad wear reaches the groves A Fig 10 Check the pads for any grease smears In the case you notice such smears take the vehicle immediately to an authorized service agent for examination and repair Checking Brake Fluid The brake fluid reservoir is attached to the right side of the steering handlebar 6 Fig 1 With the new brake pads the fluid level should be approx 5mm below the tank lid To top up the brake fluid remove the two tank cap bolts and top up the brake fluid When topping up use hydraulic brake system fluid U2 A lower level of oil in the
11. ravel is 10 15mm and the sleeve lever gap is approx 3 mm Fig 16 After adjusting make sure the jam nut is retightened 17 10 mm 10 15 mm offo Fig 16 10 mm Fig 17 Transmission Chain Adjustment The chain tension should be adjusted so that the chain yields 10 mm Bolt and Nut Tightness up or down under pressure Fig 17 Adjust the chain tension by Periodically check and retighten as necessary the bolts and nuts of the Spinning the chain tension adjuster on the front fixing screw of the rear main vehicle components wheels handlebar shock absorber rear wheel holder B Fig 15 After the adjustment retighten the nuts on fork axis engine to frame bolts gearbox oil drain plug the both fixing screws that were party released for the adjusting 18 MAINTENANCE SCHEDULE Interval km 1 000 3 000 10 000 Interval km 1 000 3 000 10 000 15 000 20 000 15 000 20 000 Interval months 2 6 12 18 24 Interval months 2 6 12 18 24 Oil lubrication Checks and adjustments 1 Gearbox oil change e e e 10 Gearbox oil level 2 Bowdens internal cables As necessary 11 Brake pads e e e 3 Chain e e e 12 Horn and lights e e e 13 Spark plug electrode clearance e e e Greasing 14 Brake operation check and adj e 4 Rear fork bearing bushes As necessary 15 Steering bearing clearance 5 Steering bearings e 16 Wheel bearing clearance e e e Cleani 17 Wheel track e e
12. s can be done safely and signal your intention in time Be careful when riding trough road crossings or passing other vehicles including parked vehicles 6 Always ride with your helmet on be properly dressed and wear boots 7 Pay due the attention to what is going on in front of you and behind you rear mirror and try to anticipate events 8 The braking affects the loading on each wheel the front braking increases whereas braking with the rear brake only increases the braking distance while also reducing vehicle stability hence use the rear brake with caution TECHNICAL SPECIFICATIONS Model Variants Engine YOUNGST R R RACING 45 A24B 45km h A26B 45km h A24D 25km h A24E 20km h Type Displacement Cylinder bore diameter Piston stroke VARIANT A24B Compression ratio Engine power Torque Maximum speed Fuel consumption single cylinder two stroke air cooled 49 cm3 38 mm 43 mm 10 1 1 7 kW at 4800 min 3 6 Nm at 3500 min 45 km h 1 8 100km Starter VARIANT A26B RACING 45 Compression ratio Engine power Torque Maximum speed Fuel consumption VARIANT A24D Compression ratio Engine power Torque Maximum speed Fuel consumption VARIANT A24E Compression ratio Engine power Torque Maximum speed Fuel consumption Electric version Kick starter 10 1 2 3 kW at 5700 min 4 7 Nm at 3800 min 45 km h 1 8 100km 6 1 1 0 kW at 3500 min 3 4 Nm at 2250 min 25 km h
13. tank indicates worn brake pads When the brake pads are replaced the oil level will rise by the amount of wear on the brake pads If the brake lever is soft in the hydraulic system is air In such case please refer to an authorized service agent We strongly suggest making all brake maintenance and service by an authorized service agent 14 x cd Fuse replacement version n The fuse is located near to the battery If the fuse is blown turn the Vie ignition switch 27 Fig 4 to the position OFF Replace the fuse with a Y new one of the correct specification Return the ignition switch to the E ON position and check operation If the new fuse blows as well have pr the electrical circuit examined by an authorized service agent j cen 7 Caution Do not install a fuse with higher capacity than specified An incorrect fuse could seriously damage the electrical system or even cause a fire CLEANING Fuel System Cleaning Fig 12 As regards the fuel system periodic cleaning of the main jet air filter and fuel petcock filter is required Do not use metal objects to clean the main jet clean it with an air jet Filter sponge should be washed thoroughly in gasoline After washing squeeze gasoline from the sponge do not brush it and dry the sponge in a dry air jet E Variant A24B A24D A24E Variant A26BAC Fig 12 15 Exhaust system cleaning Fig 13 The build up of soot in the exha
14. ust system obstructs the free passage of exhaust gas and thereby reduces engine power Periodically clean the cylinder exhaust duct exhaust pipe inlet opening piston crown and cylinder compression chamber Fig 14 Caution exhaust system is equipped with catalysts so do not enter into the exhaust pipe with any tools wires do not pour in any fluid etc Any such intervention can cause damage of the catalysts We strongly suggest making exhaust system cleaning by an authorized service agent Fig 14 16 Vehicle cleaning Vehicle exterior cleaning is also part of regular maintenance After washing wipe the vehicle dry Protect painted surfaces with paint protection agents After cleaning check the operation of the engine the lights and brakes CHECK AND ADJUSTMENTS Engine Oil Level Check Check regularly the oil level in the oil tank Top up as required Should the warning light fail to extinguish after starting the engine this means the oil level is low and immediate topping up is required Caution Electric starter version the warning light must come on when the ignition key is turned to ON If does not the fault should be remedied Kick starter version the warning light lights few seconds after starting the engine If does not the fault should be remedied Bowden Adjustment Bowden brakes are adjusted by means of the bolt on the swing arm A Fig 15 The Bowden is properly set when the brake lever free t
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