User manual YAMAHA 20DEM SERVICE MANUAL

[. . . ] In addition, the many tips given in this manual will help keep your scooter in the best possible condition. If you have any further questions, do not hesitate to contact your Yamaha dealer. The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first! IMPORTANT MANUAL INFORMATION EAU34111 Particularly important information is distinguished in this manual by the following notations: t The Safety Alert Symbol means ATTENTION! [. . . ] For this reason, you should read the following material carefully. Since the engine is brand new, do not put an excessive load on it for the first 1000 km (600 mi). The various parts in the engine wear and polish themselves to the correct operating clearances. During this period, prolonged full-throttle operation or any condition that might result in engine overheating must be avoided. EAUM2090 G G 5 0~150 km (0~90 mi) Avoid prolonged operation above 1/3 throttle. Vary the speed of the scooter from time to time. Do not operate it at one set throttle position. 150~500 km (90~300 mi) Avoid prolonged operation above 1/2 throttle. 500~1000 km (300~600 mi) Avoid cruising speeds in excess of 3/4 throttle. 5-3 OPERATION AND IMPORTANT RIDING POINTS ECAM1070 EAU17212 CAUTION: After 1000 km (600 mi) of operation, the final transmission oil must be changed. 1000 km (600 mi) and beyond Avoid prolonged full throttle operation. Vary speeds occasionally. ECA10270 Parking When parking, stop the engine, and then remove the key from the main switch. EWA10310 5 CAUTION: If any engine trouble should occur during the engine break-in period, immediately have a Yamaha dealer check the vehicle. s WARNING G Since the engine and exhaust system can become very hot, park in a place where pedestrians or children are not likely to touch them. G Do not park on a slope or on soft ground, otherwise the vehicle may overturn. ECA10380 CAUTION: Never park in an area where there are fire hazards such as grass or other flammable materials. 5-4 PERIODIC MAINTENANCE AND MINOR REPAIR EAU17280 EWA10330 Safety is an obligation of the owner. Every 24000 km Every 10000 km 14 * Front fork Shock absorber 15 * assembly 16 * Carburetor 17 * Autolube pump 18 Final transmission oil 6 19 * V-belt Front and rear brake 20 * switches 21 Moving parts and cables · Lubricate. 6-3 PERIODIC MAINTENANCE AND MINOR REPAIR ODOMETER READING (x 1000 Km) NO. ITEM CHECK OR MAINTENANCE JOB 1 Throttle grip housing 22 * and cable Lights, signals 23 * and switches · Check operation and free play. · Adjust the throttle cable free play if necessary. · Lubricate the throttle grip housing and cable. 6 12 18 24 ANNUAL CHECK EAUM2070 6 NOTE: G The air filter needs more frequent service if you are riding in unusually wet or dusty areas. G Hydraulic brake service · Regularly check and, if necessary, correct the brake fluid level. · Every two years change the brake fluid. · Replace the brake hoses every four years and if cracked or damaged. 6-4 PERIODIC MAINTENANCE AND MINOR REPAIR EAU18740 EAU18850 EAU19280 Removing and installing the cowling and panel Cowling A To remove the cowling Remove the cowling screws, and then pull the cowling off as shown. Panel A To remove the panel 1 1 1 2 2 1. Screw 2 The cowling and panel shown above need to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time a cowling or panel needs to be removed and installed. Remove the screw, and then pull the panel off as shown. To install the panel Place the panel in the original position, and then install the screw. 6 To install the cowling Place the cowling in the original position, and then install the screws. 6-5 PERIODIC MAINTENANCE AND MINOR REPAIR EAU19621 Checking the spark plug 1 ZAUM0037 1. [. . . ] Follow all the instructions in the "Care" section of this chapter. Drain the carburetor float chamber by loosening the drain bolt; this will prevent fuel deposits from building up. Pour the drained fuel into the fuel tank. 7 s WARNING G Make sure that there is no oil or wax on the brakes or tires. If necessary, clean the brake discs and brake linings with a regular brake disc cleaner or acetone, and wash the tires with warm water and a mild detergent. 7-3 SCOOTER CARE AND STORAGE 3. [. . . ]