User manual YAMAHA 20DEM SERVICE MANUAL

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YAMAHA 20DEM SERVICE MANUAL: Download the complete user guide (4266 Ko)

Manual abstract: user guide YAMAHA 20DEMSERVICE MANUAL

Detailed instructions for use are in the User's Guide.

[. . . ] 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. 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!Failure to follow WARNING instructions could result in severe injury or death to the scooter operator, a bystander, or a person inspecting or repairing the scooter. [. . . ] G Railroad crossings, streetcar rails, iron plates on road construction sites, and manhole covers become extremely slippery when wet. Therefore, slow OPERATION AND IMPORTANT RIDING POINTS down when approaching such areas and cross them with caution. Ride slowly down a hill, as braking downhill can be very difficult. EAU16820 EAU16830 Tips for reducing fuel consumption Fuel consumption depends largely on your riding style. Consider the following tips to reduce fuel consumption: G Avoid high engine speeds during acceleration. G Turn the engine off instead of letting it idle for an extended length of time (e. g. , in traffic jams, at traffic lights or at railroad crossings). Engine break-in There is never a more important period in the life of your engine than the period between 0 and 1000 km (600 mi). 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. 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. 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. Since heat and deposits will cause any spark plug to slowly erode, it should be removed and checked in accordance with the periodic maintenance and lubrication chart. In addition, the condition of the spark plug can reveal the condition of the engine. The porcelain insulator around the center electrode of the spark plug should be a medium-to-light tan (the ideal color when the vehicle is ridden normally). If the spark plug shows a distinctly different color, the engine could be operating improperly. If the spark plug shows signs of electrode erosion and excessive carbon or other deposits, it should be replaced. Specified spark plug: Std version: NGK / BR8HS Mofa version: NGK / BPR4HS Clean the surface of the spark plug gasket and its mating surface, and then wipe off any grime from the spark plug threads. Tightening torque: Spark plug: 20 Nm (2. 0 m·kgf, 14. 5 ft·lbf) Before installing a spark plug, the spark plug gap should be measured with a wire thickness gauge and, if necessary, adjusted to specification. Spark plug gap: Std version: 0. 6 ~ 0. 7 mm (0. 024 ~ 0. 028 in) Mofa version: 0. 6 ~ 0. 7 mm (0. 024 ~ 0. 028 in) NOTE: If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4~1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible. 6-6 PERIODIC MAINTENANCE AND MINOR REPAIR EAU20061 EWA11310 Final transmission oil The final transmission case must be checked for oil leakage before each ride. If any leakage is found, have a Yamaha dealer check and repair the scooter. In addition, the final transmission oil must be changed as follows at the intervals specified in the periodic maintenance and lubrication chart. Start the engine, warm up the final transmission oil by riding the scooter for several minutes, and then stop the engine. Place an oil pan under the final transmission case to collect the used oil. Remove the oil filler cap and drain bolt to drain the oil from the final transmission case. 1 s WARNING G Make sure that no foreign material enters the final transmission case. Install the final transmission oil drain bolt, and then tighten it to the specified torque. Tightening torque: Final transmission oil drain bolt: 18 Nm (1. 8 m·kgf, 13. 0 ft·lbf) 6 6. [. . . ] Use a chrome polish to shine chrome, aluminum and stainlesssteel parts, including the exhaust system. (Even the thermally induced discoloring of stainless-steel exhaust systems can be removed through polishing. ) 3. To prevent corrosion, it is recommended to apply a corrosion protection spray on all metal, including chrome- and nickel-plated, surfaces. Let the scooter dry completely before storing or covering it. EWA10940 G Before operating the scooter test its braking performance and cornering behavior. ECA10800 EAU26300 Storage Short-term Always store your scooter in a cool, dry place and, if necessary, protect it against dust with a porous cover. ECA10820 CAUTION: G Apply spray oil and wax sparingly and make sure to wipe off any excess. [. . . ]

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