User manual ETON VECTOR ST 250 SERVICE MANUAL

[. . . ] CONTENTS GENERAL INFORMATION 1. Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. Engine Removal & Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 ENGINE 4. Lubrication System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5. Fuel System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6. Cylinder HEAD & Cylinder Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7. [. . . ] Install clutch spring compressor onto the pulley assembly, and operate the compressor to let the wrench be installed more easily. Clutch nut wrench Caution Do not press the compressor too much. Hold the clutch spring compressor onto bench vise, and then remove mounting nut with special service tool. Release the clutch spring compressor and remove friction plate, clutch weight and spring from driven pulley. Remove seal collar from driven pulley. Clutch spring compressor Collar Remove guide pin, guide pin roller, and movable driven face, and then remove O-ring & oil seal seat from movable driven face. Movable driven face Seal Guide pin O-ring Guide pin Guide pin roller Inspection Clutch outer Measure the inner diameter of clutch outer. Replace the clutch outer if exceed service limit. Service limit: mm Inner diameter Clutch outer 67 Clutch lining Measure each clutch weight thickness. Service limit: 2. 0 mm Replace Clutch lining Clutch weight Driven pulley spring Measure the length of driven pulley spring. Service limit: 83. 2 mm Free length Driven pulley Check following items: If both surfaces are damaged or worn. Measure the outer diameter of driven face and the inner diameter of movable driven face. Service limit: Outer diameter 33. 94 mm Inner diameter 34. 06 mm Driven face Movable driven face Guide pin groove Driven Pulley Bearing Inspection Check if the inner bearing oil seal is damage. Check if needle bearing is damage or too big clearance. Rotate the inside of inner bearing with fingers to check if the bearing rotation is in smooth and silent. Check if the bearing outer parts are closed and fixed. Replace it if necessary. Outer ball bearing Needle bearing 68 Clutch weight Replacement Remove snap ring and washer, and then remove clutch weight and spring from driving plate. Spring Driving plate Caution Some of models are equipped with one mounting plate instead of 3 snap rings. Check if spring is damage or insufficient elasticity. Snap ring Clutch weight Check if shock absorption rubber is damage or deformation. Replace it if necessary. Shock absorption rubber Setting pin Apply with grease onto setting pins. Install new clutch weight onto setting pin and then push to the specified location. But, the clutch block should not be greased. If so, replace it. Shock absorption rubber Caution Grease or lubricant will damage the clutch weight and affect the block's connection capacity. Clutch weight Install the spring into groove with pliers. Spring 69 Install snap ring and mounting plate onto setting pin. Snap ring Replacement of Driven Pulley Bearing Remove inner bearing. Outer bearing Clipper Caution If the inner bearing equipped with oil seal on side in the driven pulley, then remove the oil seal firstly. If the pulley equipped with ball bearing, it has to remove snap ring and then the bearing. Snap ring Inner needle bearing Remove snap ring and then push bearing forward to other side of inner bearing. Place new bearing onto proper position and its sealing end should be forwarded to outside. Apply with specified oil. Snap ring Outer bearing Install new inner bearing. Bearing end Caution Its sealing end should be forwarded to outside as bearing installation. Install needle bearing with hydraulic presser. [. . . ] Make sure that the battery is fully charged and in good condition. 17. 6 LIGHT BULBS REPLACEMENT HEADLIGHT To remove the headlight, please loosen three screws at back of the headlight. Head light 144 After loosen these three screws, users can find a connector. Please disjoin the connector in order to replace an electrical bulb conveniently and safely. Installation is in the reverse order of disassembly. Screws Front Direction lights remove To replace the direction lights must loosen the screws as shown in picture. Screws 145 Front position light removes There are two screws inside the cap. Please disassemble first then push the cap upward. [. . . ]