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Yamaha why YH50 Owner's Manual

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OWNER'S MANUAL
YH50
5XS-F8199-E0

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Summary of Contents for Yamaha why YH50

  • Page 1 OWNER’S MANUAL YH50 5XS-F8199-E0...
  • Page 3 INTRODUCTION Welcome to the Yamaha world of motorcycling! As the owner of the YH50, you are benefiting from Yamaha's vast experience and newest technology regarding the design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability.
  • Page 4 • Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your scooter and this manual. If you have any questions concerning this manual,...
  • Page 5 IMPORTANT MANUAL INFORMATION EW000002 PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS SCOOTER.
  • Page 6 EAUM0023 YH50 OWNER'S MANUAL © 2003 by MBK INDUSTRIE 1st Edition, January 2003 All rights reserved Any reprinting or unauthorized use without the written permission of MBK INDUSTRIE is expressly prohibited. Printed in France.

  • Page 7: Table Of Contents

    EAU00009 TABLE OF CONTENTS 1 GIVE SAFETY THE RIGHT OF WAY 2 DESCRIPTION 3 INSTRUMENT AND CONTROL FUNCTIONS 4 PRE-OPERATION CHECKS 5 OPERATION AND IMPORTANT RIDING POINTS 6 PERIODIC MAINTENANCE AND MINOR REPAIR 7 SCOOTER CARE AND STORAGE 8 SPECIFICATIONS 9 CONSUMER INFORMATION...

  • Page 9: Give Safety The Right Of Way

    EAU00021 EW000015 GIVE SAFETY THE RIGHT OF WAY GIVE SAFETY THE RIGHT OF WAY ..........1-1 Further safe-riding points ..............1-2...
  • Page 10 GIVE SAFETY THE RIGHT OF WAY Scooters are fascinating vehicles, which can give you an unsurpassed feeling of power and freedom. However, they also impose certain limits, which you must accept; even the best scooter does not ignore the laws of physics.
  • Page 11 GIVE SAFETY THE RIGHT OF WAY EAU02964 Further safe-riding points • Be sure to signal clearly when making turns. • Braking can be extremely difficult on a wet road. Avoid hard braking, because the scooter could slide. Apply the brakes slowly when stopping on a wet surface. •...

  • Page 13: Description

    EAU01161 DESCRIPTION Left view ....................2-1 Right view.................... 2-2...
  • Page 14 DESCRIPTION Left view 1. Rear brake lever (page 3-5, 6-12, 6-15) 5. Final transmission oil filler cap (page 6-6) 2. Fuel gauge (page 3-3) 6. Kick starter (page 3-7) 3. Speedometer (page 3-3) 7. Air filter (page 6-7) 4. Main switch (page 3-1, 3-8)
  • Page 15 DESCRIPTION Right view 12. Luggage hook (page 3-9) 8. Rear carrier (page 3-9) 13. Battery / fuse (page 6-18 — 6-19) 9. Passenger seat — 14. Fuel and oil tank cap (page 3-5) 10. Throttle grip (page 6-9, 6-15) 11. Front brake lever (page 3-5, 6-12, 6-15)

  • Page 17: Instrument And Control Functions

    EAU00027 INSTRUMENT AND CONTROL FUNCTIONS Main switch / steering lock ..............3-1 Indicator and warning lights ..............3-2 Speedometer unit ................3-3 Fuel gauge ..................3-3 Handlebar switches ................3-4 Front brake lever ................. 3-5 Rear brake lever .................. 3-5 Fuel and 2-stroke engine oil tank caps ..........

  • Page 18: Main Switch/Steering Lock

    INSTRUMENT AND CONTROL FUNCTIONS EAU00038 EW000016 OFF “ ” All electrical systems are off. The key Never turn the key to “ ” or “ ” can be removed. while the scooter is moving, otherwise PUSH the electrical systems will be switched EAU04470 CHECK “...

  • Page 19: Indicator And Warning Lights

    If the warning light does not come on when the key is in the " " position or does not go off after the 2-stroke engine oil tank has been refilled, have a Yamaha dealer check the electrical cir- cuit. ZAUM0184 ZAUM0357 EC000000 1.

  • Page 20: Speedometer Unit

    INSTRUMENT AND CONTROL FUNCTIONS ZAUM0185 ZAUM0358 1. Speedometer 1. Fuel gauge 2. Odometer EAU00098 EAU00113 Speedometer unit Fuel gauge The speedometer unit is equipped with The fuel gauge indicates the amount a speedometer and an odometer. The of fuel in the fuel tank. The needle speedometer shows riding speed.

  • Page 21: Handlebar Switches

    INSTRUMENT AND CONTROL FUNCTIONS EAUM0097 Turn signal switch " "" To signal a right-hand turn, push this switch to " ". To signal a left-hand turn, push this switch to " ". When released, the switch returns to the center position. To turn off the turn si- gnal lights, push the cancel button, and then release it.

  • Page 22: Fuel And 2-Stroke Engine Oil Tank Caps

    INSTRUMENT AND CONTROL FUNCTIONS ZAUM0084 ZAUM0085 ZAUM0361 1. Front brake lever 1. Rear brake lever 1. Oil tank cap 2. Fuel tank cap EAU03882 EAU00163 EAU03463 Front brake lever Rear brake lever Fuel and 2-stroke engine oil The front brake lever is located on the The rear brake lever is located on the tank caps right handlebar grip.

  • Page 23: Fuel

    Fill the fuel tank to the To install the 2-stroke engine oil tank bottom of the filler tube as shown. cap, push it into the oil tank opening. Your Yamaha engine has been EW000130 designed to use regular unleaded EW000025 gasoline with a research octane •...

  • Page 24: Catalytic Converter

    INSTRUMENT AND CONTROL FUNCTIONS EAU03098 EAU03750 Catalytic converter 2-stroke engine oil This scooter is equipped with a catalytic Make sure that there is sufficient oil in converter in the muffler. the 2-stroke engine oil tank. Add the EW000128 recommended 2-stroke engine oil if necessary.

  • Page 25: Rider Seat

    INSTRUMENT AND CONTROL FUNCTIONS LOCK OPEN UNLOCK PUSH LOCK OPEN UNLOCK LOCK OPEN UNLOCK ZAUM0253 ZAUM0363 ZAUM0364 EAU03091 EAUM0096 Rider seat Storage compartment To close the rider seat To open the rider seat To unlock the storage compartment 1. Fold the rider seat down, and then 1.

  • Page 26: Carrier

    INSTRUMENT AND CONTROL FUNCTIONS EWA00005 • Do not exceed the load limit of 1.5 kg for the storage compartment. • Do not exceed the maximum load of 182 kg for the vehicle. ZAUM0365 ZAUM0366 1. Carrier 1. Luggage hook EAU00320 EAUT0020 Carrier Luggage hook...

  • Page 27: Pre-Operation Checks

    EAU01114 PRE-OPERATION CHECKS Pre-operation check list ............... 4-1...
  • Page 28 • Check vehicle for oil leakage. Final transmission oil • Check vehicle for oil leakage. • Check operation. • If soft or spongy, have Yamaha dealer bleed hydraulic system. Front brake • Check fluid level in reservoir. 3-5, 6-13 — 6-15 •...
  • Page 29 PRE-OPERATION CHECKS ITEM CHECKS PAGE • Check for damage. • Check tire condition and tread depth. Wheels and tires 6-10 — 6-11 • Check air pressure. • Correct if necessary. • Make sure that operation is smooth. Brake levers 6-12, 6-15 •...

  • Page 31: Operation And Important Riding Points

    EAU00372 OPERATION AND IMPORTANT RIDING POINTS Starting the engine ................5-1 Starting off................... 5-2 Acceleration and deceleration ............. 5-2 Braking ....................5-3 Tips for reducing fuel consumption ............. 5-3 Engine break-in ................... 5-4 Parking ....................5-4...

  • Page 32: Operation And Important Riding Points

    5 seconds down. If the oil level warning light does not on any one attempt. If the engine does come on, have a Yamaha dealer not start with the starter motor, try using check the electrical circuit. the kickstarter.

  • Page 33: Starting Off

    OPERATION AND IMPORTANT RIDING POINTS ECA00045 For maximum engine life, never accelerate hard when the engine is cold! ZAUM0268 ZAUM0368 EAU04473 EAU00434 Starting off Acceleration and deceleration NOTE : The speed can be adjusted by opening Before starting off, allow the engine to and closing the throttle.

  • Page 34: Braking

    OPERATION AND IMPORTANT RIDING POINTS • EAU03093 Railroad crossings, streetcar Tips for reducing fuel rails, iron plates on road cons- consumption truction sites, and manhole Fuel consumption depends largely on covers become extremely your riding style. Consider the following slippery when wet. Therefore, tips to reduce fuel consumption: slow down when approaching •...

  • Page 35: Engine Break-In

    5 to 10 other flammable materials. during the engine break-in period, minutes after every hour of operation. immediately have a Yamaha dealer Vary the speed of the scooter from time check the vehicle. to time. Do not operate it at one set...

  • Page 37: Periodic Maintenance And Minor Repair

    EAU00462 PERIODIC MAINTENANCE AND MINOR REPAIR Periodic maintenance and lubrication chart .... 6-2 Changing the brake fluid ........6-15 Removing and installing the panel ......6-5 Checking and lubricating the throttle grip ....6-15 Panel A ..............6-5 and cable Checking the spark plug .........

  • Page 38: Periodic Maintenance And Minor Repair

    Consult a Yamaha dealer for proper EW000060 maintenance intervals. If you are not familiar with scooter maintenance work, have a Yamaha...

  • Page 39: Periodic Maintenance And Lubrication Chart

    • From 30,000 km, repeat the maintenance intervals starting from 6,000 km. • Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. ODOMETER READING (x 1,000 km) ANNUAL...
  • Page 40 PERIODIC MAINTENANCE AND MINOR REPAIR ODOMETER READING (x 1,000 km) ANNUAL ITEM CHECK OR MAINTENANCE JOB CHECK • Check tread depth and for damage. • Replace if necessary. √ √ √ √ √ Tires • Check air pressure. • Correct if necessary. √...
  • Page 41 PERIODIC MAINTENANCE AND MINOR REPAIR ODOMETER READING (x 1,000 km) ANNUAL ITEM CHECK OR MAINTENANCE JOB CHECK √ √ √ √ √ Moving parts and cables • Lubricate. 22 * Lights, signals and • Check operation. √ √ √ √ √...

  • Page 42: Removing And Installing The Panel

    Do not attempt to diagnose such problems yourself. To install the panel Instead, have a Yamaha dealer check 1. Insert the rear of the panel in the the scooter. original position, and then push the front of the panel inward..

  • Page 43: Final Transmission Oil

    If any leakage is found, have a Yamaha dealer check and repair the Tightening torque: scooter. In addition, the final transmis- Spark plug: sion oil must be changed as follows at 23 Nm (2.3 m...

  • Page 44: Cleaning The Air Filter Element

    PERIODIC MAINTENANCE AND MINOR REPAIR Recommended final transmission oil: See page 8-1. Oil quantity: 0.11 L EWA00062 • Make sure that no foreign ZAUM0371 ZAUM0372 material enters the final trans- 1. Oil filler cap 1. Screws mission case. 2. Oil drain bolt •...
  • Page 45 PERIODIC MAINTENANCE AND MINOR REPAIR EC000082 • Make sure that the air filter element is properly seated in the air filter case. • The engine should never be operated without the air filter element installed, otherwise the piston(s) and/or cylinder(s) ZAUM0373 ZAUM0156 may become excessively worn.

  • Page 46: Adjusting The Carburetor

    Adjusting the carburetor The carburetor is an important part of the engine and requires very sophisticated adjustment. Therefore, all carburetor adjustments should be left to a Yamaha dealer, who has the necessary professional knowledge and experience. ZAUM0051 a Throttle cable free play...

  • Page 47: Tires

    PERIODIC MAINTENANCE AND MINOR REPAIR EW000077 EW000082 • Because loading has an enormous The tire air pressure must be impact on the handling, braking, per- checked and adjusted on cold formance and safety characteristics of tires (i.e., when the temperature your scooter, you should keep the of the tires equals the ambient following precautions in mind.

  • Page 48: Cast Wheels

    An is cracked, have a Yamaha dealer re- unbalanced wheel can result in place the tire immediately. poor performance, adverse...

  • Page 49: Adjusting The Front Brake Lever Free Play

    10—20 mm as shown. nut in direction b . Periodically check the brake lever free Periodically check the brake lever free play and, if necessary, have a Yamaha play and, if necessary, adjust it as EW000101 dealer adjust it.

  • Page 50: Checking The Front Brake Pads

    If a brake shoe has worn to the point that the wear indicator reaches the wear limit line, have a Yamaha dea- ler replace the brake shoes as a set. 6-13...

  • Page 51: Checking The Brake Fluid Level

    EAU00732 Checking the brake fluid DOT 4 brake fluid level goes down level suddenly, have a Yamaha dealer Insufficient brake fluid may allow air to NOTE : check the cause. enter the brake system, possibly If DOT 4 is not available, DOT 3 can be causing it to become ineffective.

  • Page 52: Changing The Brake Fluid

    The Autolube pump is a vital and sophisticated component of the engine, The pivoting points of the front and rear which must be adjusted by a Yamaha brake levers must be lubricated at the dealer at the intervals specified in the...

  • Page 53: Checking And Lubricating The Centerstand

    Yamaha dealer check or repair it. tenance and lubrication chart. pivots and metal-to-metal contact sur- faces should be lubricated if necessary.

  • Page 54: Checking The Steering

    The front and rear wheel bearings must forward and backward. If any free be checked at the intervals specified in play can be felt, have a Yamaha the periodic maintenance and dealer check or repair the lubrication chart. If there is play in the steering.

  • Page 55: Battery

    PERIODIC MAINTENANCE AND MINOR REPAIR EAUM0049 EW000116 Battery • Electrolyte is poisonous and A poorly maintained battery will corrode dangerous since it contains and discharge quickly. The electrolyte UPPER sulfuric acid, which causes LOWER level, battery lead connections and severe burns. Avoid any con- breather hose routing should be tact with skin, eyes or clothing checked before each ride and at the...

  • Page 56: Replacing The Fuse

    PERIODIC MAINTENANCE AND MINOR REPAIR • KEEP THIS AND ALL BATTE- 4. After installation, make sure that RIES OUT OF THE REACH OF the battery leads are properly CHILDREN. connected to the battery terminals and that the breather hose is properly routed, in good condition, EC000100 and not obstructed.

  • Page 57: Replacing A Headlight Bulb

    If the headlight bulb burns out, replace installing the screws. it as follows. 6. Have a Yamaha dealer adjust the headlight beam if necessary. 1. Remove the headlight unit by removing the screws. 2. Disconnect the headlight lead connectors.

  • Page 58: Replacing The Brake Taillight Bulb

    PERIODIC MAINTENANCE AND MINOR REPAIR ZAUM0382 ZAUM0383 EAUM0037 EAU03497 Replacing the brake/taillight Replacing a turn signal light bulb bulb 1. Remove the brake/taillight lens by 1. Remove the turn signal light lens removing the screws. by removing the screw. 2. Remove the brake/taillight bulb 2.

  • Page 59: Troubleshooting

    The following troubleshooting chart represents a quick and easy procedure for checking these vital systems yourself. However, should your scooter require any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, experience, and know-how to service the scooter properly.

  • Page 60: Troubleshooting Chart

    Remove the spark plug and check the electrodes. The engine does not start. Have a Yamaha dealer check the vehicle. Check the battery. 4. Battery The engine turns over The battery is good.

  • Page 61: Scooter Care And Storage

    EAU03434 SCOOTER CARE AND STORAGE Care ....................7-1 Storage ....................7-3...
  • Page 62 SCOOTER CARE AND STORAGE • Care 3. Remove extremely stubborn dirt, Do not use any harsh chemical like oil burnt onto the crankcase, products on plastic parts. Be While the open design of a scooter with a degreasing agent and a sure to avoid using cloths or reveals the attractiveness of the brush, but never apply such...
  • Page 63 SCOOTER CARE AND STORAGE • For scooters equipped with a After riding in the rain, near the sea After cleaning windshield: Do not use strong or on salt-sprayed roads 1. Dry the scooter with a chamois or cleaners or hard sponges as Since sea salt or salt sprayed on the an absorbing cloth.
  • Page 64 SCOOTER CARE AND STORAGE EWA00002 NOTE : Long-term Consult a Yamaha dealer for advice on Before storing your scooter for several • Make sure that there is no oil what products to use. months: or wax on the brakes or tires. If 1.
  • Page 65 SCOOTER CARE AND STORAGE a. Remove the spark plug cap 5. Lubricate all control cables and and spark plug. the pivoting points of all levers and NOTE : b. Pour a teaspoonful of engine pedals as well as of the sidestand/ Make any necessary repairs before oil into the spark plug bore.

  • Page 67: Specifications

    EAU01038 SPECIFICATIONS Specifications ..................8-1 Conversion table ................. 8-4...
  • Page 68 SPECIFICATIONS Specifications Model YH50 Transmission oil: Type SAE 10W30 type SE Dimensions: Capacity Overall length 1.940 mm Périodic oil change 0.11L Overall width 685 mm Total amount 0.13L Overall height 1.105 mm Seat height 765 mm Air filter type: Wet type element Wheelbase 1.294 mm Fuel:...
  • Page 69 SPECIFICATIONS Chassis: Wheels: Frame type Steel tube underbone Front Caster angle ((degree)) 25° Type Cast wheel Trail 101.3 mm Size 16 X MT 1.60 Rear Tires: Type Cast wheel Front: Size 16 X MT 1.85 Type Tubeless Size 2 1/2-16 42M Brakes: Manufacturer / Model MICHELIN / M29S TT...
  • Page 70 SPECIFICATIONS Electrical: Ignition system type C.D.I Charging system Flywheel magneto Battery Model GM4-3B, YB4L-B, FB4L-B Voltage/capacity 12 V / 4 Ah Headlight type: Bulb Bulbs (voltage/wattage x quantity): Headlight 12V, 35W/35Wx1 Brake/brake light 12V, 5W/21Wx1 Turn signal light Front 12V, 10Wx2 Rear 12V, 10Wx2 Meter lights...

  • Page 71: Conversion Table

    SPECIFICATIONS EAU04513 Conversion table Conversion table METRIC SYSTEM TO IMPERIAL SYSTEM All specification data in this manual are listed in SI and Metric unit Conversion factor Imperial unit METRIC UNITS. m•kgf 7.233 ft•lbf m•kgf 86.794 in•lbf Torque cm•kgf 0.0723 ft•lbf Use this table to convert METRIC unit values to IMPERIAL cm•kgf 0.8679...

  • Page 73: Consumer Information

    EAU01039 CONSUMER INFORMATION Identification numbers ................. 9-1 Key identification number ..............9-1 Vehicle identification number .............. 9-1 Model label ..................9-2...

  • Page 74: Consumer Information

    Identification numbers Record the key identification number, vehicle identification number and model label information in the spaces provided below for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen. ZAUM0070 ZAUM0384 1.

  • Page 75: Model Label

    The model label is affixed to the bottom of the seat. (See page 3-8 for seat opening procedures.) Record the infor- mation on this label in the space provided. This information will be needed when ordering spare parts from a Yamaha dealer.
  • Page 76 CONSUMER INFORMATION EAU01052* YOU ARE HEREBY REMINDED THAT MODIFICATIONS TO THE ENGINE OR THE POWER OF THE SCOOTER ARE FORBIDDEN BY LAW. ANY CHANGES FOR THE PURPOSE OF RAISING THE TOP SPEED OF THE VEHICLE OR BOOSTING THE POWER OF THE ENGINE WOULD LEAD TO THE SCOOTER BEING CLASSED AS A SCOOTER.
  • Page 80 YAMAHA MOTOR CO., LTD. PRINTED IN FRANCE 2003.01...

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