User manual ETON VIPER 50 ST SERVICE MANUAL

[. . . ] ENGINE LUBRICATION AND COOLING SYSTEM 6. REAR WHEEL SYSTEM FENDERS AND EXHAUST PIPE ELECTRICAL SYSTEM TROUBLE SHOOTING 1. INFORMATION 1. 1 1. 2 1. 3 SAFTY NOTES SPECIFICATION 1. 4 1. 5 SERIAL NUMBER TORQUE VALUE 1. 1 SAFETY GASOLINE Gasoline is extremely flammable and is explosive under certain condition. Do not smoke or allow sparks or flames in your work area. CARBON MONOXIDE Never run the engine in a closed area. [. . . ] When engine speed increase, the drive pulley will be push to belt by the centrifugal force from six rollers. Then the pitch circle of belt in drive pulley will be larger. The belt at driven pulley is forced to move to the center of shaft, then the radius of pitch circle is decreased. The transmission ratio is therefore altered by the alteration of pitch circle's radius. (In the drawing, "H" means high speed, "L" means low speed) 7. 5 CONTINUOUS VARIABLE TRANSMISSION V-Belt Made of rubber fiber, resistant to head, pressure and abrasion. The inner side of the Belt is toothed. Drive Pulley Due to the increasing engine speed, the rollers push the movable drive face by centrifugal force. Then the belt is pressed and enlarges its turning radius. The aluminum fan is installed on the exterior of fixed drive face. It can reduce the belt temperature. Driven Pulley Because the revolving radius of V-Belt at the Drive End is enlarged, the Face Comp Movable Drive is squeezed out by the V-Belt at the Driven End to shorten the revolving radius. There is a Torque Cam on the Movable Drive Face. When the outside load is higher than the engine's output, the pulley of fixed shaft and belt slip to make the Movable Drive Face move along the inner side of Cam and compensate to increase to high torque (toward to low speed) and make the engine maintain smooth running with original revolution. 7. 6 GEAR BOX Reverse Shaft Comp Sensor Drive Shaft Comp Drum Gear Shift Fork Fork Counter Shaft Comp Shaft Remove mission side cover, parts of shift mechanism and mission cover. Inspect gears for wear, scoring, chipping or break. The gear ratio of front gear composition is about 47 x 31 15 11 49 49 31 × × 15 16 11 The gear ratio of reverse gear composition is about 7. 7 ELECTRIC SELF-STARTER MECHANISM Starter Motor is installed on the upper side of engine. The starter motor can act only when the left hand brake is applied. ELECTRIC SELF-STARTER MECHANISM KICK STARTER 7. 8 KICK STARTER This kick-starter arm is on the left side of engine. When the kick-starter arm is kicked, the gear of start shaft will drive the kick-starter to revolve the crankshaft to start the engine. After the engine is started, the kick-started will stop transfer the power to the kick-starter driven gear. When the kick-starter lever is released, the kick-starter gear will go back to its original position. 7. 9 DISASSEMBLY AND CHECK OF C. V. T. SYSTEM Remove the engine clutch cover, by unscrew the fixed bolts. Disassembly the front drive pulley, check the six rollers for wear. If necessary, replace the rollers. 8. STEERING SYSTEM 8. 1 THE PARTS DRAWING OF STEERING SYSTEM 8. 2 TROUBLESHOOTING 8. 3 HANDLEBAR 8. 4 STEERING SYSTEM 8. 1 THE PARTS DRAWING OF STEERING SYSTEM 8. 2 TROUBLESHOOTING HARD STEERING Faulty tire Steering shaft holder too tight Insufficient tire pressure Faulty steering shaft bushing Damaged steering shaft bushing Faulty tire Worn front brake drum bearing Bent rim Axle nut not tightened properly Bent tie rods Wheel installed incorrectly Unequal tire pressure Bent frame Worn swing arm pivot bushings Incorrect wheel alignment FRONT WHEEL WOBBLING STEERS TO ONE SIDE FRONT SUSPENSION NOISE ¡¹ ¡¹ HARD SUSPENSION ¡¹ ¡¹ ¡¹ SOFT SUSPENSION ¡¹ Loose front suspension fasteners Binding suspension link Faulty front swing arm bushings Improperly installed front swing arms Bent front shock absorber swing rod Weak front shock absorber springs Worn or damage front swing arm bushings ¡¹ 8. 3 HANDLEBAR REMOVAL Remove the right side handlebar cover by unscrew two fix screws. Remove the throttle lever housing on the right side handle bar. Remove brake lever bracket assemb Remove the handle bar switch on the left handle bar. [. . . ] Disconnect the negative cable and then the position cable and remove the battery. BATTERY INSTALLATION Install the battery in the reverse order of removal. After installing the battery, coat the terminals with clean grease. 12. 5 CHARGING Connect the charge positive cable to the battery position terminal. Connect the charge negative cable to the battery negative terminal. Using 0. 9A-charging current about 5 hours. [. . . ]