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HYOSUNG PRIMA (SF-50)

SERIAL NUMBER LOCATION

The frame serial number or V.I.N. (Vehicle Identification Number) is stamped on the right side of the frame under the
footboard. The engine serial number is located on the up side of the crankcase assembly.
These numbers are required especially for registering the machine and ordering spare parts.

FUEL AND OIL RECOMMENDATION

FUEL

Gasoline used should be graded 85-95 octane (Research Method) or higher. An unleaded gasoline type is 
recommended.

TRANSMISSION OIL 

Make sure that the transmission oil you use comes under API
classific a t i o n  o f  S H ,  S G  o r  S F  a n d   t h a t   i t s   v i s c o s i t y   r a t i n g
i s   S A E   10W/30 or 10W/40. If an SAE 10W/30 or 10W/40 motor
oil is not available, select an alternate according to the right chart.

* Difference between photographs and actual motorcycles depends on the markets.

RIGHT SIDE

LEFT SIDE

1-3  GENERAL INFORMATION

Summary of Contents for Prima

Page 1: ...r servicing HYOSUNG vehicles Without such knowledge and skills you should not attempt servicing by relying on this manual only Instead please contact your nearby authorized HYOSUNG motorcycle dealer COPYRIGHT HYOSUNG MOTORS MACHINERY INC 1999 HYOSUNG MOTORS MACHINERY INC FOREWORD This manual contains an introductory description on HYOSUNG PRIMA SF 50 and procedures for its inspec tion service and ...

Page 2: ...are listed on the previous page as GROUP INDEX select the section where what you are looking for belong 3 Holding the manual as shown at the right will allow you to find the first page of the section easily 4 On the first page of each section its contents are listed Find the item and page you need COMPONENT PARTS Example Rear wheel Rear brake ...

Page 3: ...LOCK 1324 Apply or use brake fluid Measure in voltage range Measure in resistance range Measure in current range Use special tool Torque control required Data beside it indicates specified torque Apply oil Use engine oil unless otherwise specified Apply SUPER GREASE A Apply SILICONE GREASE Apply MOLY PASTE Apply BOND 1215 DEFINITION SYMBOL DEFINITION SYMBOL Apply SUPER GREASE C ...

Page 4: ......

Page 5: ...NERAL INFORMATION INFORMATION LABELS 1 1 GENERAL PRECAUTIONS 1 1 SERIAL NUMBER LOCATION 1 3 FUEL AND OIL RECOMMENDATIONS 1 3 BREAK IN PROCEDURES 1 4 EXTERIOR ILLUSTRATION 1 5 SPECIFICATIONS 1 6 CONTENTS 1 ...

Page 6: ...the words WARNING CAUTION and NOTE have special meanings Pay special attention to the messages highlighted by these signal words Proper service and repair procedures are important for the safety of the service machanic and the safety and reliability of the vehicle When 2 or more persons work together pay attention to the safety of each other When it is necessary to run the engine indoors make sure...

Page 7: ...head and case bolts and nuts beginning with larger diameter and ending with smaller diameter from inside to outside diagonally to the specified tightening torque Whenever you remove oil seals gaskets packing O rings locking washers cotter pins circlips and certain other parts as specified be sure to replace them with new ones Also before installing these new parts be sure to remove any left over m...

Page 8: ...rts FUEL AND OIL RECOMMENDATION FUEL Gasoline used should be graded 85 95 octane Research Method or higher An unleaded gasoline type is recommended TRANSMISSION OIL Make sure that the transmission oil you use comes under API classification of SH SG or SF and that its viscosity rating is SAE 10W 30 or 10W 40 If an SAE 10W 30 or 10W 40 motor oil is not available select an alternate according to the ...

Page 9: ...odometer reading of 1 000 km you can subject the motorcycle to full throttle operation Do not maintain constant engine speed for an extended period during any portion of the break in Try to vary the throttle position Since the brake system of this motorcycle is filled with a glycol based brake fluid by the manufacturer do not use or mix different types of fluid such as silicone based and petroleum...

Page 10: ...1 5 GENERAL INFORMATION 320 635 740 1 110 990 125 535 690 Head lamp Rear reflector Tail Brake lamp Front Turnsignal lamp Rear Turnsignal lamp 600 710 1 825 135 1 270 350 EXTERIOR ILLUSTRATION ...

Page 11: ... 49 3 0 cu in Carburetor SIDE DRAFT VARIABLE VENTURI PISTON Air cleaner Wet filter type Starter system Kick self starter Corrected compression ratio 7 4 1 Intake system Reed valve TRANSMISSION Clutch Dry shoe automatic centrifugal type Reduction ratio 2 997 0 813 Drive system V belt drive CHASSIS Front suspension Telescopic type Rear suspension Coil spring type Caster 25 Trail 75mm 2 95in Steering...

Page 12: ...Fuse 10A Headlamp 15W 2 Turn signal lamp 10W 4 Tail Brake lamp 5 10W Speedometer lamp 1 7W 2 Oil level indicator lamp 1 7W Turn signal indicator lamp 1 7W CAPACITIES Fuel tank 4 8ℓ Engine oil tank 1 0ℓ Transmission oil 110cc Replace 130cc Overhaul 1 7 GENERAL INFORMATION NOTE The specifications are subject to change without notice ...

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