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Yamaha why YH50 Owner'S Manual Download Page 20

3

INSTRUMENT AND CONTROL FUNCTIONS

1

2

ZAUM0185

1. Speedometer
2. Odometer

EAU00098

Speedometer unit

The speedometer unit is equipped with
a speedometer and an odometer. The
speedometer shows riding speed. The
odometer shows the total distance
traveled.

1

ZAUM0358

1. Fuel gauge

EAU00113

Fuel gauge

The fuel gauge indicates the amount
of fuel in the fuel tank. The needle
moves towards "E" (Empty) as the fuel
level decreases. When the needle
reaches "E", refuel as soon as possi-
ble.

NOTE :

Do not allow the fuel tank to empty itself
completely.

3-3

Summary of Contents for why YH50

Page 1: ...OWNER S MANUAL 5XS F8199 E0 YH50 ...

Page 2: ......

Page 3: ...this manual thoroughly so as to enjoy all advantages of your YH50 The owner s manual does not only instruct you in how to operate inspect and maintain your scooter but also in how to safeguard yourself and others from trouble and injury 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 cont...

Page 4: ...recautions that must be taken to avoid damage to the scooter NOTE A NOTE provides key information to make procedures easier or clearer NOTE This manual should be considered a permanent part of this scooter and should remain with it even if the scooter is subsequently sold Yamaha continually seeks advancements in product design and quality Therefore while this manual contains the most current produ...

Page 5: ...EW000002 PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS SCOOTER IMPORTANT MANUAL INFORMATION ...

Page 6: ...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: ... 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 EAU00009 TABLE OF CONTENTS 2 3 4 5 6 7 8 9 ...

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Page 9: ...GIVE SAFETY THE RIGHT OF WAY 1 1 Further safe riding points 1 2 EAU00021 EW000015 GIVE SAFETY THE RIGHT OF WAY 1 ...

Page 10: ...influence of even small amounts of alcohol there is a tendency to take dangerous risks Protective clothing is as essential for the scooter rider as seat belts are for car drivers and passengers Always wear a complete scooter suit whether made of leather or tear resistant synthetic materials with protectors sturdy boots scooter gloves and a properly fitting helmet Optimum protective wear however sh...

Page 11: ...etcar rails iron plates on road construction sites and manhole covers become extremely slippery when wet Slow down and cross them with caution Keep the scooter upright otherwise it could slide out from under you The brake lining could get wet when you wash the scooter After washing the scooter check the brakes before riding Always wear a helmet gloves trousers tapered around the cuff and ankle so ...

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Page 13: ...Left view 2 1 Right view 2 2 2 EAU01161 DESCRIPTION ...

Page 14: ...iew 6 5 7 1 2 3 4 1 Rear brake lever page 3 5 6 12 6 15 2 Fuel gauge page 3 3 3 Speedometer page 3 3 4 Main switch page 3 1 3 8 5 Final transmission oil filler cap page 6 6 6 Kick starter page 3 7 7 Air filter page 6 7 2 1 ...

Page 15: ... 8 9 10 11 12 13 14 8 Rear carrier page 3 9 9 Passenger seat 10 Throttle grip page 6 9 6 15 11 Front brake lever page 3 5 6 12 6 15 12 Luggage hook page 3 9 13 Battery fuse page 6 18 6 19 14 Fuel and oil tank cap page 3 5 2 2 ...

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Page 17: ...ights 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 3 5 Fuel 3 6 Catalytic converter 3 7 2 stroke engine oil 3 7 Kickstarter 3 7 Rider seat 3 8 Storage compartment 3 8 Carrier 3 9 Luggage hook 3 9 3 ...

Page 18: ...are off The key can be removed To lock the steering 1 Turn the handlebars all the way to the left 2 Push the key in from the position and then turn it to while still pushing it 3 Remove the key To unlock the steering Push the key in and then turn it to while still pushing it EW000016 Never turn the key to or whilethescooterismoving otherwise theelectricalsystemswillbeswitched off which may result ...

Page 19: ...or when the oil level in the 2 stroke engine oil tank is low during operation If the warning light comes on during operation stop immediately and fill the oil tank with Yamalube 2 or equivalent 2 stroke engine oil of either JASO grade FC or ISO grades EG C or EG D The warning light should go off after the 2 stroke engine oil tank has been refilled NOTE If the warning light does not come on when th...

Page 20: ...r The speedometer shows riding speed The odometer shows the total distance traveled 1 ZAUM0358 1 Fuel gauge EAU00113 Fuel gauge The fuel gauge indicates the amount of fuel in the fuel tank The needle moves towards E Empty as the fuel level decreases When the needle reaches E refuel as soon as possi ble NOTE Do not allow the fuel tank to empty itself completely 3 3 ...

Page 21: ... sound the horn EAUM0063 Start switch Push this switch while applying the front or rear brake to crank the engine with the starter EC000005 See page 5 1 for starting instruc tions prior to starting the engine 1 Start switch 3 4 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 po...

Page 22: ...andlebar grip To apply the rear brake pull this lever toward the handlebar grip 1 Front brake lever 1 Rear brake lever 1 2 ZAUM0361 1 Oil tank cap 2 Fuel tank cap EAU03463 Fuel and 2 stroke engine oil tank caps The fuel tank cap and the 2 stroke engine oil tank cap are located under the seat See page 3 8 for seat opening and closing procedures Fuel tank cap To remove the fuel tank cap turn it coun...

Page 23: ...tube as shown EW000130 Do not overfill the fuel tank otherwise it may overflow when the fuel warms up and expands Avoid spilling fuel on the hot engine EAU00185 EC000008 Immediately wipe off spilled fuel with a clean dry soft cloth since fuel may deteriorate painted surfaces or plas tic parts EAU04206 Recommended fuel REGULAR UNLEADED GASOLINE ONLY Fuel tank capacity Total amount 7 2 L Your Yamaha...

Page 24: ...ever park the scooter near possible fire hazards such as grass or other materials that easily burn Do not allow the engine to idle too long EAU03750 2 stroke engine oil Make sure that there is sufficient oil in the 2 stroke engine oil tank Add the recommended 2 stroke engine oil if necessary NOTE Make sure that the 2 stroke engine oil tank cap is properly installed Recommended oil Yamalube 2 or eq...

Page 25: ... Make sure that the seat is properly secured before riding PUSH O P E N ZAUM0253 ZAUM0363 O P E N OPEN UNLOCK LOCK OPEN OPEN UNLOCK LOCK O P E N OPEN UNLOCK LOCK ZAUM0364 3 8 EAUM0096 Storage compartment To unlock the storage compartment Insert the key in the lock and turn it 1 4 turn clockwise To open the storage compartment when it is unlocked Turn the knob 1 4 turn clockwise The knob will retur...

Page 26: ...ed the maximum load of 182 kg for the vehicle 1 ZAUM0366 1 Luggage hook EAUT0020 Luggage hook EWAT0002 Do not exceed the load limit of 3 0 kg for the luggage hook Do not exceed the maximum load of 182 kg for the vehicle 3 9 EWA00005 Donotexceedtheloadlimitof1 5 kg for the storage compartment Do not exceed the maximum load of 182 kg for the vehicle ...

Page 27: ...EAU01114 PRE OPERATION CHECKS Pre operation check list 4 1 4 ...

Page 28: ...kage Check operation Rear brake Check pedal free play 3 5 6 13 6 15 Adjust if necessary Make sure that operation is smooth Throttle grip Check cable free play 6 9 6 15 If necessary have Yamaha dealer adjust cable free play and lubricate cable and grip housing The condition of a vehicle is the owner s responsibility Vital components can start to deteriorate quickly and unexpectedly even if the vehi...

Page 29: ...S PAGE Check for damage Wheels and tires Check tire condition and tread depth 6 10 6 11 Check air pressure Correct if necessary Brake levers Make sure that operation is smooth 6 12 6 15 Lubricate lever pivoting points if necessary Centerstand Make sure that operation is smooth 6 16 Lubricate pivot if necessary Chassis fasteners Make sure that all nuts bolts and screws are properly tightened Tighte...

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Page 31: ...U00372 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 5 ...

Page 32: ...or engine break in ins tructions prior to operating the vehicle for the first time 1 Turn the key to and when the oil level warning light comes on turn it to EC000045 If the oil level warning light does not come on have a Yamaha dealer check the electrical circuit 2 Close the throttle completely 3 While applying the front or rear brake start the engine by pushing the start switch or by pushing the...

Page 33: ... rear view mirrors 3 Switch the turn signal on 4 Check for oncoming traffic and then slowly turn the throttle grip on the right in order to take off 5 Switch the turn signal off ZAUM0268 ECA00045 For maximum engine life never accelerate hard when the engine is cold ZAUM0368 EAU00434 Acceleration and deceleration The speed can be adjusted by opening and closing the throttle To increase the speed tu...

Page 34: ...en wet Therefore slow down when approaching such areas and cross them with caution Keep in mind that braking on a wet road is much more difficult Ride slowly down a hill as braking downhill can be very difficult EAU03093 Tips for reducing fuel consumption Fuel consumption depends largely on your riding style Consider the following tips to reduce fuel consumption Thoroughly warm up the engine Avoid...

Page 35: ... scooter from time to time Do not operate it at one set throttle position 150 500 km Avoid prolonged operation above 1 2 throttle 500 1 000 km Avoid cruising speeds in excess of 3 4 throttle ECAT0001 After 1 000 km of operation be sure to replace the final transmission oil 1 000 km and beyond Avoid prolonged full throttle operation Vary speeds occasionally EC000049 If any engine trouble should occ...

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Page 37: ... front brake lever free play 6 12 Checking the front brake pads 6 13 and rear brake shoes Checking the brake fluid level 6 14 6 Changing the brake fluid 6 15 Checking and lubricating the throttle grip 6 15 and cable Lubricating the front and rear brakes levers 6 15 Checking and lubricating the centerstand 6 16 Checking the front fork 6 16 Checking the steering 6 17 Checking the wheel bearings 6 17...

Page 38: ...ent and lubrication are explained on the following pages EW000060 If you are not familiar with scooter maintenance work have a Yamaha dealer do it for you EAU00466 EW000061 This scooter is designed for use on paved roads only If this scooter is operated in abnormally dusty muddy or wet conditions the air filter element should be cleaned or replaced more frequently otherwise rapid engine wear may r...

Page 39: ...n and adjust brake lever free play Replace brake shoes Whenever worn to the limit 7 Brake hose Check for cracks or damage Replace See NOTE on page 6 4 Every 4 years 8 Wheels Check runout and for damage EAU03686 Periodic maintenance and lubrication chart NOTE The annual checks must be performed every year except if a kilometer based maintenance is performed instead From 30 000 km repeat the mainten...

Page 40: ... that all nuts bolts and screws are properly tightened 13 Centerstand Check operation Lubricate 14 Front fork Check operation and for oil leakage 15 Shock absorber assembly Check operation and shock absorber for oil leakage 16 Carburetor Adjust engine idling speed 17 Autolube pump Check operation Bleed if necessary 18 Final transmission oil Check vehicle for oil leakage Change 19 V belt Replace Ev...

Page 41: ...000 km NO ITEM CHECK OR MAINTENANCE JOB 1 ANNUAL CHECK 6 12 18 24 EAU03541 NOTE The air filter needs more frequent service if you are riding in unusually wet or dusty areas 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 ...

Page 42: ...with the periodic mainte nance 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 scooter is ridden normally If the spark plug shows a distinctly different color the engine could be defective Do not attempt to diagnose ...

Page 43: ...hen 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 a ZAUM0037 a Spark plug gap EAU04228 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...

Page 44: ...noil See page 8 1 Oil quantity 0 11 L EWA00062 Make sure that no foreign material enters the final trans mission case Make sure that no oil gets on the tire or wheel 7 Check the final transmission case for oil leakage If oil is leaking check for the cause 1 2 ZAUM0371 1 Oil filler cap 2 Oil drain bolt EAUM0071 Cleaning the air filter element The air filter element should be cleaned at the interval...

Page 45: ...t 1 ZAUM0373 1 4 3 2 ZAUM0156 3 Apply oil of the recommended type to the entire surface of the element and then squeeze the excess oil out NOTE The air filter element should be wet but not dripping Recommended oil Engine oil 4 Insert the element into the air filter case 1 Air filter element EC000082 Make sure that the air filter element is properly seated in the air filter case The engine should n...

Page 46: ...l carburetor adjustments should be left to a Yamaha dealer who has the necessary professional knowledge and experience a ZAUM0051 EAU00635 Adjusting the throttle cable free play The throttle cable free play should measure 1 5 3 0 mm at the throttle grip Periodically check the throttle cable free play and if necessary have a Yamaha dealer adjust it a Throttle cable free play 6 9 ...

Page 47: ...le Do not carry along loosely packed items which can shift during a ride Securelypacktheheaviestitems close to the center of the scooter and distribute the weight evenly on both sides Adjustthesuspensionandtireair pressure with regard to the load Check the tire condition and air pressure before each ride Tire air pressure measured on cold tires Load Front Rear Up to 90 kg 180 kPa 1 8 kgf cm2 1 8 b...

Page 48: ...r is equipped with tubeless tires 1 Tire tread depth 2 Tire sidewall EAU03773 Cast wheels To maximize the performance durability and safe operation of your scooter note the following points regarding the specified wheels The wheel rims should be checked for cracks bends or warpage before each ride If any damage is found have a Yamaha dealer replace the wheel Do not attempt even the smallest repair...

Page 49: ...ooter until the brake system has been checked or repaired by a Yamaha dealer EAU04469 Adjusting the rear brake lever free play The brake lever free play should measure 10 20 mm as shown Periodically check the brake lever free play and if necessary adjust it as follows To increase the brake lever free play turn the adjusting nut at the brake shoe plate in direction a To decrease the brake lever fre...

Page 50: ... if the lining thickness is less than 0 5 mm have a Yamaha dealer replace the brake pads as a set EAU04502 Rear brake shoes The rear brake is provided with a wear indicator which allows you to check the brake shoe wear without having to disassemble the brake To check the brake shoe wear check the position of the wear indicator while applying the brake If a brake shoe has worn to the point that the...

Page 51: ... the recommended quality brake fluid otherwise the rubber seals may deteriorate causing leakage and poor braking performance Recommended brake fluid DOT 4 NOTE If DOT 4 is not available DOT 3 can be used Refill with the same type of brake fluid Mixing fluids may result in a harmful chemical reaction and lead to poor braking performance Be careful that water does not enter the master cylinder when ...

Page 52: ...addi tion the cable should be lubricated or replaced at the intervals specified in the periodic maintenance chart 6 15 ZAUM0061 EAU00774 Adjusting the Autolube pump The Autolube pump is a vital and sophisticated component of the engine which must be adjusted by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart EAU03118 Lubricating the front and rear brake...

Page 53: ...ork must be checked as follows at the intervals specified in the periodic main tenance and lubrication chart To check the condition EW000115 Securely support the scooter so that there is no danger of it falling over Check the inner tubes for scratches damage and excessive oil leakage ZAUM0378 EAU04123 Checking and lubricating the centerstand The operation of the centerstand should be checked befor...

Page 54: ...wer ends of the front fork legs and try to move them forward and backward If any free play can be felt have a Yamaha dealer check or repair the steering ZAUM0379 EAU00794 Checking the steering Worn or loose steering bearings may cause danger Therefore the operation of the steering must be checked as follows at the intervals specified in the periodic maintenance and lubrication chart 1 Place a stan...

Page 55: ...ed space 6 18 EAUM0049 Battery Apoorly maintained battery will corrode and discharge quickly The electrolyte level battery lead connections and breather hose routing should be checked before each ride and at the intervals specified in the periodic main tenance and lubrication chart To check the electrolyte level 1 Place the scooter on a level sur face and hold it in an upright posi tion NOTE Make ...

Page 56: ...the battery lead connections and correct the breather hose routing To store the battery 1 If the scooter will not be used for more than one month remove the battery fully charge it and then place it in a cool dry place 2 If the battery will be stored for more than two months check the specific gravity of the electrolyte at least once a month and fully charge the battery whenever necessary 3 Fully ...

Page 57: ...ng the headlight bulb If the headlight bulb burns out replace it as follows 1 Remove the headlight unit by removing the screws 2 Disconnect the headlight lead connectors 3 Remove the headlight bulb holder by pushing it inward and turning it counterclockwise and then remove the defective bulb 1 ZAUM0381 1 Headlight bulb holder EC000103 Donotuseafuseofahigheramperage rating than recommended to avoid...

Page 58: ...ith the bulb holder 5 Place the brake taillight lens in the original position and then install the screw ZAUM0382 EAU03497 Replacing a turn signal light bulb 1 Remove the turn signal light lens by removing the screw 2 Remove the defective bulb by pushing it in and turning it counterclockwise 3 Insert a new bulb into the socket push it in and then turn it clockwise until it stops 4 Install the lens...

Page 59: ...of power 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 Use only genuine Yamaha replacement parts Imitation parts may look like Yamaha parts but they ...

Page 60: ...ssion Check the ignition Have a Yamaha dealer check the vehicle Remove the spark plug and check the electrodes 3 Ignition Wipe off with a dry cloth and correct the spark plug gap or replace the spark plug Have a Yamaha dealer check the vehicle The engine does not start Have a Yamaha dealer check the vehicle The engine does not start Check the battery Operate the electric starter 4 Battery The engi...

Page 61: ...EAU03434 SCOOTER CARE AND STORAGE Care 7 1 Storage 7 3 7 ...

Page 62: ...eel axles Always rinse the dirt and degreaser off with water Cleaning ECA00011 Avoid using strong acidic wheel cleaners especially on spoked wheels If such products are used on hard to remove dirt do not leave the cleaner on the affected area any longer than instructed Also thoroughly rinse the area off with water immediately dry it and then apply a corrosion protection spray Improper cleaning can...

Page 63: ...th water carry out the following steps after each ride in the rain near the sea or on salt sprayed roads NOTE Salt sprayed on roads in the winter may remain well into spring 1 Clean the scooter with cold water and a mild detergent after the engine has cooled down ECA00012 Do not use warm water since it increases the corrosive action of the salt 2 Apply a corrosion protection spray on all metal inc...

Page 64: ... your scooter in a cool dry place and if necessary protect it against dust with a porous cover ECA00015 Storing the scooter in a poorly ventilated room or covering it with a tarp while it is still wet will allow water and humidity to seep in and cause rust To prevent corrosion avoid damp cellars stables because of the presence of ammonia and areas where strong chemicals are stored Long term Before...

Page 65: ...electrodes while turning the engine over 5 Lubricate all control cables and the pivoting points of all levers and pedals as well as of the sidestand centerstand 6 Check and if necessary correct the tire air pressure and then lift the scooter so that both of its wheels are off the ground Alternatively turn the wheels a little every month in order to prevent the tires from becoming degraded in one s...

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Page 67: ...EAU01038 SPECIFICATIONS Specifications 8 1 Conversion table 8 4 8 ...

Page 68: ...ine oil Type Yamalube 2 or 2 strokes engine oil Classification Jaso FC ou ISO EG C EG D Capacity 1 3 L Transmission oil Type SAE 10W30 type SE Capacity Périodic oil change 0 11L Total amount 0 13L Air filter type Wet type element Fuel Recommended fuel Regular unleaded gasoline RON 91 mini Fuel tank capacity 7L Carburetor Type quantity PY 12 Manufacturer GURTNER Spark plug Type Manufacturer BR8HS N...

Page 69: ...ront 180 kpa Rear 210 kpa Total weight of rider passenger cargo and accessories Wheels Front Type Cast wheel Size 16 X MT 1 60 Rear Type Cast wheel Size 16 X MT 1 85 Brakes Front Type Single disc brake Operation Right hand operation Type brake fluid DOT 4 Rear Type Single drum brake Operation Left hand operation Suspension Front suspension Telescopic fork Rear suspension Unit swing Shock absorber ...

Page 70: ...e 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 12V 1 2Wx2 High beam indicator light 12V 1 2Wx1 Turn signal indicator light 12V 1 2Wx1 Oil warning light 12V 2Wx1 Fuses Main fuse 7 5 A 8 3 ...

Page 71: ...TRIC SYSTEM TO IMPERIAL SYSTEM Metric unit Conversion factor Imperial unit Torque m kgf m kgf cm kgf cm kgf 7 233 86 794 0 0723 0 8679 ft lbf in lbf ft lbf in lbf Weight kg g 2 205 0 03527 lb oz Speed km h 0 6214 mi h Distance km m m cm mm 0 6214 3 281 1 094 0 3937 0 03937 mi ft yd in in Volume Capacity cc cm3 cc cm3 L liter L liter 0 03527 0 06102 0 8799 0 2199 oz IMP liq cu in qt IMP liq gal IMP...

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Page 73: ...9 EAU01039 CONSUMER INFORMATION Identification numbers 9 1 Key identification number 9 1 Vehicle identification number 9 1 Model label 9 2 ...

Page 74: ... 3 MODEL LABEL INFORMATION EAU01041 Key identification number The key identification number is stamped into the key tag Record this number in the space provided and use it for reference when ordering a new key EAU01044 Vehicle identification number The vehicle identification number is stamped into the frame NOTE The vehicle identification number is used to identify your scooter and may be used to ...

Page 75: ...l 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 1 ZAUM0385 1 Model label 9 2 ...

Page 76: ... HOLD A DRIVING LICENSE IN ADDITION SUCH CHANGES WOULD LEAD TO THE INVALIDATION OF TIE INSURANCE COVER SINCE INSURANCE POLICIES EXPLICITLY FORBID TECHNICAL CHANGES WHICH HAVE THE PURPOSE OF BOOSTING THE PERFORMANCE FOR THE REASONS SET OUT ABOVE A BREACH OF THE PROHIBITION TO TAMPER WITH THE ENGINE IS PUNISHED BY LAW BY APPROPRIATE FINES INCLUDING THE CONFISCATION OF THE VEHICLE FINES ARE ALSO INFL...

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Page 80: ... E PRINTED IN FRANCE 2003 01 YAMAHA MOTOR CO LTD ...

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