SF 50 - Hyosung
Contents
1. 6 Don t replenish with brake fluid over the limit line It will leak out of the brake fluid 1 Take out air cleaner by disassembling 2 screws e Servelr 2 Put out the filter Be careful not to allow dusts or water to go inside when it is replenished Don t use the unrecommended brake fluid 6 Brake fluid can damage severely the plastics or rubbers When it is spilt on the parts mop them up TIRES Check the tire pressure when it is cold Tire Pressure Front Rear Solo riding 1 25 kglai 2 00 Dual riding 1 75 2 25 kglent 21 CAUTION When the assembly of air cleaner filter is Check if there is leakage around the oil pump not completely done dusts can go inside and damage severely engine 6 Be careful not to allow water to go into the filter while washing and oil tank BATTERY 6 This motorcycle is equipped with sealed MF battery 6 Maintaining the battery does not need CAUTION 6 Check if there is leakage from gasoline tank hose and carburetor 6 Don t take off the sealed cap 6 Take off the battery when the motorcycle is not used for a long time to prevent electric discharge or leakage When the battery is attached on the motorcycle take off the terminal TRANSMISSION OIL Check if the transmission oil leaks 22 Check the fuse with the ignition switch OFF BRAKE LEVER 1 Remove the battery cover under the pillion seat2. 2 Take out the fuse holder 3 Open the fuse holder and take out the fuse Check if it is within the required range when you squeeze the brake lever until feel the resistance When it is beyond the required range replace the brake shoe Fix part of nut to pin or the serious accident can be caused by the brake failure 6 Always be sure to replace the blown fuse with the correct amperage fuse 6 If the replaced fuse is blown in a short time it means there are other problems Check the other parts Don t pour water on the fuse box when washing 23 BATTERY TERMINAL Clean the battery terminal when itis dusty or rusted 1 Deassemble the cover of battery box 2 Set the ignition switch OFF position 3 Clean the terminal If there is white dust clean it with warm water 4 Assemble the battery wires and grease the terminal lightly Keep the battery away from fires When disassemble the battery wires take off terminal first with the ignition switch OFF position When assemble terminal first AIR CLEANER 1 Take off the air cleaner filter 2 Wash it with cleaning solvent and dry 3 Immerse it in motor oil squeeze the oil off to make it slightly wet with oil 4 Assemble the air cleaner filter 24 NON FLAMMABLE CLEANING SOLVENT 4 Don t use the cleaning solvent whose flash point is low when cleaning the filter 6 Assemble the filter completely or damage
3. Even though the motorcycle is not run for a long time the periodic maintence is necessary The engine and muffler are too hot right after engine stopped please be caerful not to be burned Don t inspect the engine indoor where there is little or no ventilation available The exhaust gas is extremely poisonous BRAKES THE BRAKE LEVER 6 Turn the front rear brake adjuster clockwise or counterclockwise to obtain the specified play 6 After adjusting the play check there is no dragging and enough clearance between the brake lever and grip when the lever is tightly squeezed BRAKE FLUID 6 Keep the motorcycle upright and place the handlebar straight Check brake fluid level by observing the middle line on the brake fluid reservoir 6 When the level is below the middle line replenish with brake fluid TIRES THE TIRE PRESSURE If you see the problem with the tire adjust the pressure with the pressure gauge NORMAL CAUTION If there are some problem with the tire pressure or cracks and cuts it will 1 THE GASOLINE decrease the riding stability and lead to flat tire 6 Check if the remaining gasoline is enough for running to the destination Replenish the gasoline before reaching E mark with the ignition switch in the ON CRACKS AND CUTS position d Check if 1 there are visible cracks and cuts FUEL GAUGE 2 there are pebbles stuck lt 0 0
4. while moving the handle upward downward 6 Inspect whether the steering stem is well eet Lll downwards and or foreward backward ENGINE First 1 000km 4 On EE Engine bolt nut Tighten Air cleaner Clean every 3 000km eof owe LESEN Engine hose Replace every Replaceevedyenns Turn the front rear brake adjuster clockwise or counterclockwise to obtain the specified play 19 4 AE iS ON E N LO Check the front rear brake while running in low speeds Check if there is leakage or damage on the brake fluid reservoir and the connected parts are loose Check if the vibration damages the brake hose while moving the handle left right or running BRAKE FLUID Keep the motorcycle upright and place the handle straight Check the brake fluid level by observing the middle line When the level is below the lower the middle line check if there is leakage 20 BRAKE PADS Wearing condition of brake pads can be checked by observing the wear limit line on the pads When the wear exceeds the limit line replace the pads WEAR LIMIT LINE How to replenish with brake fluid 1 Clean the brake fluid reservoir around not to allow dusts to get inside of it 2 Loosen the screw and open the cap 3 Replenish with brake fluid to the limit line the recommended brake fluid DOT4 4 Fasten the cap WU SS 2
5. a center of the footboard and turn it counterclockwise 2 Open the fuel tank cover as it lift up lightly 3 Turn the fuel tank cap left 4 Fill the fuel tank and turn the cap right tightly A CAUTION 6 The trunk could be heated Don t keep anything that doesn t endure heat 6 Don t keep the fragile Check if it is locked 6 The unlocking of trunk could cause serious accident 6 Take care not to spill the oil in the trunk 6 Don t allow water to get inside the trunk or it could damage 6 Don t wash the trunk with water Use the vacuum cleaner 6 Don t keep the valuables in the trunk when leaving unattended IWIN Ne When refueling always shut the engine off and turn the ignition Key to the OFF position Never refuel near open flame Do not overfill the fuel tank Do not fill the fuel tank above the bottom of the filler tube as shown in the illustration 10 CAUTION 6 THE PROPER OPERATIONS Take care not to spill gasoline during refueling HOW TO START THE ENGINE HOW TO SUPPLY THE ENGINE OIL Open the seat Before riding Turn the oil tank cap left Fill the oil tank and tighten it Check how much the engine oil and Use the recommended oil gasoline is left 6 Put the motorcycle on the centerstand OIL TANK CAP A burnt engine is usually a result of engine starting with no oil in the oil tank Check the oil
6. level before starting to avoid seriously damage 6 Don t mix the unrecommended oil It could damage the engine When refilling the oil tank Don t allow the dust to get inside Mop the oil spilt Don t put the patch on the cap It could disturb the oil to be provided and damage the engine 11 Push the start switch without turning the throttle grip CAUTION 6 Depress the start switch right after started When the start motor doesn t rotate within 5 seconds after pushing the start switch try again after 10 seconds for preventing the damage on battery When it doesn t start after several trial turn the throttle grip to Ye 4 position SM FULL THROTTLE OPERATION When started return the throttle grip It is not started easily in the cases as follows 1 It has been long since you started the motorcycle 2 There was no gasoline left In this case 1 2 push the start button longer without turning the throttle grip When the engine is cold idle it for a while PN HN Don tidle it indoor where there is little or no ventilation available 6 The exhaust gas including carbon monoxide is extremely poisonous Start using by the kick starter lever You can start using by the kick starter lever when there is some problem in battery Put the motorcycle on the center stand Set the ignition switch C ON Press forcefully the kick starter lever When sta
7. severely the engine 6 Be careful not to allow water to go inside the air cleaner filter RUBBER CAP OF CABLES Mop them up with a patch when washing RUBBER CAP 10 SPECIFICATIONS DIMENSIONS AND DRY MASS Overall engi 1 825mm 71 9in GET EE 635mm 25 0in Overall eight asociadas ertt marae 1 110mm 43 7in Wheelbase 1 270 50 0 Ground _ 2 rt EE 125mm 4 9in Bein NE 88kg 194lbs ENGINE Type um Ec E e D IU Two stroke forced air cooled Intake system e Reed valve Number of cylinder saa anapi ban aaa ee 1 BOG mei a 41 0mm 1 614in STE rekasa aa E ta tpe aM 37 4mm 1 472in Piston displacement sss 49cm 3 0cu in Corrected Compression ratio Apa a AA PA ented te der aati Ed 1 4 1 Carburetor X N SIDEDRAFT VARIABLE VENTURI PISTON Starter system GAS DNI LI EE M IIS LIN MAL KICK SELF STARTER TRANSMISSION Cluich er bad egit ere un a buon Dry shoe automatic centrifugal type Reduction ratio 2 997 0 813 Drive system headin V belt drive 25 CHASSIS FrontSuspension Sa one Telescopic type Rear suspension eme Coil spring type GE saa 25 Trall THEM 7 5mm 2 95in Siserind anole obtinenda diee usn 45 right amp left Front tire Size ot Galilean blo regla d
8. vehicle after such device or element of design has been removed or ren dered inoperative by any person MAINTENANCE The exhaust system of this motorcycle requires no periodic maintenance The engine should be adjusted to the manufacturer s specifications and the spark plug should be kept in good condition Running the engine with incorrectly operating spark plug or misadjusted carburetor may cause permanent damage to the catalyst and to the noise control system I Prepared by HYOSUNG MOTORS amp MACHINERY ING 1st Ed MAY 1999 Printed in KOREA
9. 0 OF km h TOTAL FOREIGN FUEL RECOMMENDATION 6 Use unleaded gasoline with an octane rating of 85 95 or higher Research method Unleaded gasoline can extend spark plug life and exhaust components life 6 If pinking or knocking is experienced substitute THE DEPT OF TIRE TREAD higher octane grade gasoline or another brand because there are differences between brands Change the tire if the remaining depth tire tread becomes 1 6mm 0 06inch or less ENGINE OIL Replenish the Engine oil when the Engine oil indicator light is on with the ignition switch in the C ON position OIL INDICATOR LIGHT 0 0 0 0 08 km h TOTAL 17 CAUTION The lock of engine oil will damage engine severely Check if the mirror shows the rear and or side views LAMPS Check if the head lamp tail lamp and turn signal lamp work well with the engine started Check if the lamp are dusty or damaged REFLECTOR Q Check if the reflector is dusty or damaged D Ge co TURN SIGNAL LAMP EN 8 PERIODIC MAINTENANCE 9 CHASSIS 1 000Km 4 8 The belows show the schedule of periodic maintenance by mileages More freguent uiid maintenance must be performed on motorcycles mm o that are used under severe conditions pom ae Tami First Every Every 1 000km 4 000km 8 000km FRONT FORK om Check if there is any noise by bend of front fork
10. IMPORTANT BREAK IN INFORMATION FOR YOUR MOTORCYCLE The first 1 000km 600miles are the most impor tant in the life of your motorcycle Proper break in operation during this time will help ensure maximum life and performance from your new motorcycle Hyosung parts are manufactured of high quality materials and manufactured parts are finished to close tolerances Proper break in operation allows the machined surfaces to polish each other and mate smoothly Motorcycle reliability and performance depend on special care and restraint exercised during the break in period It is especially important that you avoid operating the engine in a manner which could expose the engine parts to exces sive heat Please refer to the BREAK IN section for specific break in recommendations WARNING CAUTION NOTE Please read this manual and follow its instruc tions carefully To emphasize special informa tion the words WARNING CAUTION and NOTE carry special meanings and should be carefully reviewed AWARNING The personal safety of the rider may be involved Disregarding this information could result in injury to the rider A CAUTION These instructions point out special service procedures or precautions that must be followed to avoid damag ing the machine NOTE This provides special information to make maintenance easier or important instruc tions clearer FOREWORD THANK YOU for choosing Hyosung We at Hyosung have
11. YCLE RIDERS SERIAL NUMBER LOCATION 2 NAMES OF EACH PART n 3 CONTROLS INSTRUMENT PANEL SWITCH AHOWTOUSE asane a eta aapa 9 HOW TO USE THE HELMET HOLDER HOW TO OPEN THE SEAT HOW TO USE THE PERSONAL TRUNK 5 GASOLINE AND ENGINE OIL 10 HOW TO PROVIDE THE GASOLINE HOW TO SUPPLY THE ENGINE OIL 6 THE PROPER OPERATIONS sense 11 HOW TO START THE ENGINE HOW TO START OFF ADJUSTING THE SPEEDS HOW TO OPERATE THE BRAKE HOW TO STOP AND PARK BREAKINGIN 7 INSPECTION BEFORE RIDING 16 BRAKES TIRES GASOLINE AND ENGINE OIL LAMPS REAR VIEW MIRRORS REFLECTOR 8 PERIODIC MAINTENANCE FRONT FORK BRAKES TIRES AIR CLEANER BATTERY TRANSMISSION OIL ENGINE OIL AND GASOLINE 9 MAINTENANCE TIPS BRAKE LEVER FUSES BATTERY TERMINAL AIR CLEANER RUBBER CAP OF CABLES 10 SPECIFICATIONS 1 CONSUMER INFORMATION ACCESSORY INSTALLATION AND PRECAUTION SAFETY TIPS There are a great variety of accessories available to Hyosung owners Hyosung can not have direct control over the quality or suitability of accessories you may wish to purchase except genuine parts The addition of unsuitable accessories can lead to unsafe operating conditions It is not possible for Hyosung to test each accessory on the market or combinations of all the available accessories how ever your dealer can assist you in selecting quality accessories and installing them correctly Use extreme caution when selecting and installing the accessories f
12. designed tested and produced this motorcycle using the most modern tech nology available to provide you with many happy enjoyable safe riding Motorcycling is one of the most exhilarating sports and insure your riding enjoyment you should become throughly familiar with the information pre sented in this Owner s Manual before riding the motorcycle The proper care and maintenance that your motorcycle requires are outlined in this manual By following these instructions explicitly you will insure a long trouble free operating life for your motorcycle Your Hyosung dealer has experi enced technicians that are trained to provide your machine with the best possible service with the right tools and equipment All information illustrations photographs and specifications contained in this manual are based on the latest product information avail able at the time of publication Due to improve ments or other changes there may be some discrepancies in this manual Hyosung reserves the right to make changes at any time Please note that this manual applies to all speci fications for all respective destinations and explains all equipments Therefore your model may have different standard features than shown in this manual HYOSUNG MOTORS amp MACHINERY INC COPYRIGHT HYOSUNG MOTORS amp MACHINERY INC TABLE OF CONTENTS 1 CONSUMER INFORMATION 4 ACCESSORY INSTALLATION AND PRECAUTION TIPS SAFE RIDING RECOMMENDATION FORMOTORC
13. er et 1 10 70 1 2 47 Bos zB PNG 120 70 12 51J Frontbrake rd vi UH na duet Red obtenu ad ids Disc Re rbrak Drum ELECTRICAL Ignition eee CDI type Ignition timing Vides el EGER ba GEA ease NEES Ag OPEN epe 20 B T D C at 1 000 rpm Spark plug n B8HS Battery EN 12V 3Ah 10HR alo MEME Magneto 10A Oo o 15W x2 T r sasak 10W 4 Tall Erake amp eee aidera tutt 5 10W Speedometer lamp asesino sarana a ames tne itaque 1 7WN X2 Oil level indicator lamp 1 7N Turn signal indicator lamp ped 1 7W CAPACITIES Rueltank CDM 481 oil tank 1 0 Transmission oil 1 10cc Replace 130cc Overhaul 26 A WARNING Noise Control System muffler assembly TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED Owners are warned that the law may prohibit a The removal or rendering inoperative by any person other than for purpose of mainte nance repair or replacement of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its any sale of delivery to the ulti mate purchaser or while it is in use and b The use of the
14. fore caution should be used when selecting and installing all accessories 5 Certain accessories displace the rider from his or her normal riding position This limits the free dom of movement of the rider and may limit his or her control ability 6 Additional electrical accessories may over load the existing electrical system Severe overloads may damage the wiring harness or create a dangerous situation due to the loss of electrical power during the operation of the motorcycle When carrying a load on the motorcycle mount it as low as possible and as close as possible to the machine An improperly mounted load can create a high center of gravity which is very dangerous and makes the motorcycle difficult to handle The size of the load can also affect the aerody namics and handling of the motorcycle Balance the load between the left and right side of the motorcycle and fasten it securely MODIFICATION Modification of the motorcycle or removal of original equipment may render the vehicle unsafe or illegal SAFE RIDING RECOMMENDATION FOR MOTORCYCLE RIDERS Motorcycle riding is great fun and an exciting sport Motorcycle riding also requires that some extra precautions be taken to ensure the safety of the rider and passenger These precautions are WEAR A HELMET Motorcycle safety equipment starts with a quality safety helmet One of the most serious injuries that can happen is a head injury ALWAYS wear a properly appro
15. l smoothly operated Apply the front and rear brakes at the sametime REAR BRAKE Ad U 14 HOW TO STOP AND PARK Turn on the turn signal lamp and return the throttle grip When completely stopped turn off the turn signal lamp Set the key 9 OFF position Put the motorcycle on the center stand CAUTION Don t park the motorcycle on the slippery or tilted surface 15 Lock the steering for security Pull the ignition key out of the lock and keep it yourself BREAKING IN During mamufacture only the best possible materials are used and all machined parts are finished to a very high standard but it is still necessary to allow the moving parts to BREAK IN before subjecting the engine to maximum stresses The future performance and reliability of the engine depends on the care and restraint exercised during its early life The general rules are as follow Keep to these breaking in speed limit Up to 1 000km 600miles Less than 1 2 throttle Upon reaching an odometer reading of 1 000km 600miles you can subject the motorcycle to full throttle operation Q Do not maintain constant engine speed for an extended time period during any portion of the break in Try to vary the throttle position 7 INSPECTION BEFORE RIDING Running inspection once in a day and periodic maintenance 4 000km or 8 000km is necessary for the full performance and preventing accidents A CAUTION
16. ning or changing lanes The headlamp meter lamp and taillamp come on gt position for right turn signal If not start engine do not come on 9 lt position for left turn signal 4 C position 6 ZA Push the switch to cancel the operation CAUTION Turn off the lamp right after completing the The headlamp meter lamp and taillamp go off turn or lane change If you keep the lamp on it could cause other drivers to be confused 3 HORN SWITCH 5 STARTER SWITCH Push in the electric starter switch to rotate the starting motor NOTE If the front or rear brake lever is not squeezed the starter motor will not rotate CAUTION When the starter motor doesn t rotate within 5 seconds after pushing the switch try again after 10 seconds for preventing the damage on battery 4 HOW TO USE HOW TO USE THE HELMET HOLDER When keep a helmet temporally use the helmet holder following the illustration below HOW TO OPEN THE SEAT You can use the Trunk after opening the seat 1 To unlock the seat insert the ignition key into the lock and turn it counterclockwise 2 To lock the seat push clown firmly until the seat latch snaps into the locked position AENG AND ENENGE Keep the maintenance manual in the personal trunk HOW TO PROVIDE THE GASOLINE Put the helmet as shown in the picture 1 Insert the ignition key into the lock located
17. nition switch is O ON 4 TURN SIGNAL INDICATOR LIGHT When turn signals are being operated the indicator will flash intermitently 5 OIL INDICATOR LIGHT When the engine oil level in the tank becomes too low requiring HYPOL OIL refilling the indicator will light When the oil level check light turns on the remaining amount of oil has become approximately 0 232 CAUTION The lack of Engine oil could cause serious damages on the Engine SWITCH D IGNITION SWITCH The ignition switch has three positions CO ON POSITION The ignition circuit is completed and the engine can now be started The key cannot be removed from the ignition switch in this position X OFF POSITION All electrical circuits are cut off LOCK POSITION To lock the steering turn the handlebar all the way to the left Push down and tum key to the LOCK position and remove the key All electrical circuits are disconnected For preventing steal Lock the steering Turn right the handle the key from to s Lock Pull out the key while from f Lock to 6 Check if the steering is locked When it is not locked Turn the handle right a little Press the switch to operate the horn 4 LIGHT SWITCH 2 TURN SIGNAL SWITCH 1 position It is for left right tur
18. or your Hyosung We have devel oped some general guidelines which will aid you when deciding whether and how to equip your motorcycle 1 In case that additional weight or aerody namic affecting accessories are installed they should be mounted as low as possible as close to the motorcycle and as near the center of gravity as is feasible The mounting brack ets and other attachment hardware should be carefully checked to ensure that it pro vides for a rigid nonmovable mount Weak mounts can allow the shifting of the weight and create a dangerous unstable condition 2 Inspect for proper ground clearance and bank angle An improperly mounted load could criti cally reduce these two safety fac tors Also determine that the load does not interfere with the operation of the suspension steering or other control operations 3 Accessories fitted to the handlebars or the front fork area can create serious stability problems This extra weight will cause the motorcycle to be less responsive to your steering control The weight may also cause oscillations in the front end and lead to instability problems Accessories added to the machine should be as light as possible and kept to a minimum 4 The motorcycle may be affected by a lifting con dition or by an instability in cross winds or when being passed or passing large vehicles Improperly mounted or poorly designed acces sories can result in an unsafe riding condition there
19. rted return the kick starter lever CAUTION Don t let the engine run excessively before riding Return the center stand For returning the center stand push the motorcycle forward gripping the rear brake lever with left hand Check the safety and the rear carrier with right hand Turn on the left turn signal lamp and check the safety Grip up the rear brakd lever When returning the center stand Don t grip the seat Be careful of the vehicles in back Ride on Gripping the lever with both hands be seated on from leftside of the motorcycle Put the left foot on the earth and fasten the rear brake lever Start off Depress the rear brake lever and turn the throttle grip slowly the motorcycle will start moving forward 13 Grip the brake lever right after returning the AWARNING throttle grip When turned the throttle grip excessively Make the speed lower by operating the brake it will make quick start which is dangerous slowly A WARNING ANE SEEE 6 Using either front or rear brake is dangerous and can cause skidding and loss of control The quick brake can cause skidding You can adjust the speeds with the throttle grip Turning Get faster Returning Get slower Pay much more attention to driving when rains or snows HOW TO OPERATE THE BRAKE When the brake doesn t work normally keep low speeds and apply the brake lightly unti
20. torcycle They are also to assist your dealer in terms of ordering parts or referring to special service infor mation The frame number D is stamped on the right side of the frame under the footboard The engine serial number 2 is stamped on the up side of the crankcase assembly Please write down the numbers in the box provided below for your future reference Frame number Engine number 2 NAMES OF EACH PARTS D Rear brake lever 2 Turn signal switch 3 Horn switch 4 Ignition switch 5 Starter switch 6 Light switch Throttle grip Front brake lever Fuel tank Personal trunk Oil tank 2 Rear carrier 3 Muffler Air cleaner 6 Battery amp Fuse Seat lock Helmet holder Center stand Kick start lever HM means the invisable parts 3 CONTROLS INSTRUMENT PANEL D SPEEDOMETER The speedometer indicates the road speed in kilometers per hour 2 ODOMETER The odometer registers the total distance that the motorcycle has been ridden 3 FUEL GAUGE It indicates the remaining fuel amount in the fuel tank E indicates the fuel tank is empty or nearly so the remaining fuel is 1 3 2 at E the capacity is 4 8 Fill the fuel tank before E CAUTION The fuel gauge indicates the remaining amount whenever the ignition switch is Q ON or amp OFF For checking the remain ing amount of fuel put the motorcycles on the center stand and set the ig
21. ved helmet You should also wear a suitable eye protection RIDING APPAREL Loose fancy clothing can be uncomfortable and unsafe in terms of riding your motorcycle Choose good quality motorcycle riding apparel in terms of riding your motorcycle INSPECTION BEFORE RIDING Review throughly the instructions in the INSPECTION BEFORE RIDING section of this manual Do not forget to perform an entire safety inspection to ensure the safety of the rider and its passenger FAMILIARIZE YOURSELF WITH THE MOTORCYCLE Your riding skill and mechanical knowledge form the foundation for safe riding practices We suggest that you practice riding your motorcycle in a non traffic situation until you are thoroughly familiar with your machine and its controls Remember practice makes perfect KNOW YOUR LIMITS Ride within the boundaries of your own skill at all times Knowing these limits and staying within them will help you to avoid accidents BE EXTRA SAFETY CONSCIOUS ON BAD WEATHER DAYS Riding on bad weather days especially wet ones requires extra caution Braking distances double on a rainy day Stay off of the painted surface marks manhole covers and greasy appearing areas as they can be especially slippery Use extreme caution at railway crossings and on metal gratings and bridges Whenever you have a doubt about road condition slow down SERIAL NUMBER LOCATION The frame and or engine serial numbers are used to register the mo
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