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EAU00000 INTRODUCTION Congratulations on your purchase of the Yamaha YJ50R. This model is the result of Yamaha’s vast experience in the production of fine sporting, touring, and pacesetting racing machines. It represents the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
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8 This manual should be considered a permanent part of this scooter and should remain with it even if the scooter is subsequently sold. 8 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.
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IMPORTANT MANUAL INFORMATION EW000000 PLEASE READ THIS MANUAL AND THE “YOU AND YOUR MOTORCYCLE: RIDING TIPS” BOOKLET CAREFULLY AND COMPLETELY BEFORE OPERATING THIS SCOOTER. DO NOT ATTEMPT TO OPERATE THIS SCOOTER UNTIL YOU HAVE ATTAINED ADEQUATE KNOWL- EDGE OF ITS CONTROLS AND OPERATING FEATURES AND UNTIL YOU HAVE BEEN TRAINED IN SAFE AND PROPER RIDING TECHNIQUES.
EAU00009 TABLE OF CONTENTS SAFETY INFORMATION ......... 1-1 Seat ............... 3-9 Safe riding ............. 1-1 Helmet holder ..........3-9 Protective apparel .......... 1-2 Storage compartment ........3-10 Modifications ..........1-3 Carrier ............3-11 Loading and accessories ....... 1-3 Gasoline and exhaust gas ......1-5 PRE-OPERATION CHECKS ......
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TABLE OF CONTENTS Tires ............. 6-10 Riva limited warranty ........9-6 Adjusting the front and rear brake lever Yamaha extended service ......9-8 free play ............ 6-12 Checking the front and rear brake shoes ..6-13 Checking and lubricating the throttle grip and cable ..........
EAU00011 Q SAFETY INFORMATION SCOOTERS ARE SINGLE TRACK VEHICLES. THEIR SAFE USE AND OPERATION ARE DEPEN- DENT UPON THE USE OF PROPER RIDING TECHNIQUES AS WELL AS THE EXPERTISE OF THE OPERATOR. EVERY OPERATOR SHOULD KNOW THE FOLLOWING REQUIREMENTS BEFORE RIDING THIS SCOOTER. HE OR SHE SHOULD: 1.
Q SAFETY INFORMATION 4. Many accidents involve inexperienced operators. In fact, many operators who have been involved in accidents do not even have a current driver’s license. a. Make sure that you are qualified and that you only lend your scooter to other qualified opera- tors.
Always wear protective clothing that covers your legs, ankles, and feet. Modifications Modifications made to this scooter not approved by Yamaha, or the removal of original equipment, may render the scooter unsafe for use and may cause severe personal injury. Modifications may also make your scooter illegal to use.
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Accessories Genuine Yamaha accessories have been specifically designed for use on this scooter. Since Yamaha cannot test all other accessories that may be available, you must personally be responsible for the proper selection, installation and use of non-Yamaha accessories. Use extreme caution when select- ing and installing any accessories.
Q SAFETY INFORMATION c. Certain accessories can displace the operator from his or her normal riding position. This improper position limits the freedom of movement of the operator and may limit control ability, therefore, such accessories are not recommended. 2. Use caution when adding electrical accessories. If electrical accessories exceed the capacity of the scooter’s electrical system an electric failure could result, which could cause a dangerous loss of lights or engine power.
Q SAFETY INFORMATION EAU00023 Further safe-riding points 1. Make sure to signal clearly when making turns. 2. 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. 3.
Q SAFETY INFORMATION WARNING WARNING BEFORE YOU OPERATE THIS VEHICLE, READ NEVER sit on carrier. THE OWNER’S MANUAL AND ALL LABELS. CARRIER LOAD LIMIT. NEVER CARRY A PASSENGER. you increase your risk of losing control if you carry a passenger. 3 kg { 7 lbs ALWAYS WEAR AN APPROVED MOTORCYCLE...
EAU00026 DESCRIPTION Left view 1. Front wheel 6. Kickstarter (page 3-9) 2. Front fender 7. Air filter element (page 6-8) 3. Front turn signal light 8. Battery (page 6-14) 4. Rear turn signal light 5. Rear wheel...
EAU00027 INSTRUMENT AND CONTROL FUNCTIONS EAU00038 EAU00040 LOCK All electrical systems are off. The key The steering is locked, and all electri- can be removed. cal systems are off. The key can be removed. LOCK EAU04470 The 2-stroke engine oil level warning light should come on.
INSTRUMENT AND CONTROL FUNCTIONS OFF(PUSH) LOCK 1 2 3 1. Push. 1. 2-stroke engine oil level warning light 2. Turn. “ ” To lock the steering 2. Turn signal indicator light “5” EW000016 3. High beam indicator light “&” 1. Turn the handlebars all the way EAU03034 to the left.
2-stroke engine oil tank has been refilled, have a EAU00063 Yamaha dealer check the electrical High beam indicator light “&” circuit. This indicator light comes on when the high beam of the headlight is 1.
INSTRUMENT AND CONTROL FUNCTIONS EAU03889 Turn signal switch “4/6” To signal a right-hand turn, push this switch to “6”. To signal a left-hand turn, push this switch to “4”. When released, the switch returns to the center position. To cancel the turn signal lights, push the switch in after it has returned to the center position.
INSTRUMENT AND CONTROL FUNCTIONS EAU00143 FRONT REAR Start switch “,” Push this switch to crank the engine with the starter. EC000005 See page 5-1 for starting instruc- tions prior to starting the engine. 1. Front brake lever 1. Rear brake lever EAU03882 EAU00163 Front brake lever...
INSTRUMENT AND CONTROL FUNCTIONS EW000024 Make sure that the fuel tank cap is properly installed before riding. 1. Fuel tank cap lock cover 1. Match marks a. Unlock. To install the fuel tank cap EAU03447 1. Insert the fuel tank cap into the Fuel tank cap tank opening with the key insert- ed in the lock and with the marks...
INSTRUMENT AND CONTROL FUNCTIONS EAU00185 Your Yamaha engine has been designed to use regular unleaded Immediately wipe off spilled fuel gasoline with a pump octane number with a clean, dry, soft cloth, since [(R+M)/2] of 86 or higher, or a...
INSTRUMENT AND CONTROL FUNCTIONS EAU03969 Recommended oil: 2-stroke engine oil See page 8-1. Make sure that there is sufficient oil in Oil quantity: the 2-stroke engine oil tank. If neces- 1.4 L (1.23 Imp qt, 1.48 US qt) sary, add the recommended 2-stroke engine oil as follows.
INSTRUMENT AND CONTROL FUNCTIONS 1. Kickstarter a. Open. 1. Helmet holder EAU00214 EAU02978 EAU00262* Kickstarter Seat Helmet holder To start the engine, fold out the kick- The helmet holder is located under starter lever, move it down lightly with To open the seat the seat.
INSTRUMENT AND CONTROL FUNCTIONS EW000030 EC000010 Never ride with a helmet attached Keep the following points in mind to the helmet holder, since the hel- when using the storage compart- met may hit objects, causing loss ment. 8 Since the storage compart- of control and possibly an acci- dent.
INSTRUMENT AND CONTROL FUNCTIONS To store a helmet in the storage com- partment, place the helmet upside- down with the front facing forward. NOTE: 8 Some helmets cannot be stored storage compartment because of their size or shape. 8 Do not leave your scooter unat- 1.
• Lubricate cable if necessary. Rear brake 3-5, 6-12–6-13, 6-14 • Check lever free play. • Adjust if necessary. • Make sure that operation is smooth. Throttle grip • Check free play. 6-10 • If necessary, have Yamaha dealer make adjustment or lubricate.
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PRE-OPERATION CHECKS ITEM CHECKS PAGE • Check for damage. • Check tire condition and tread depth. Wheels and tires 6-10–6-12 • Check air pressure. • Correct if necessary. • Make sure that operation is smooth. Brake levers 3-5, 6-12–6-13, 6-14 •...
LOCK Consult Yamaha dealer be blocked and performance regarding any control or func- will suffer. 8 Make sure not to put anything tion that you do not thorough- ly understand.
If the 2-stroke engine oil level ECA00055 NOTE: warning light does not come on, Before starting off, allow the engine have a Yamaha dealer check the For maximum engine life, always to warm up. electrical circuit. warm the engine up before starting off.
OPERATION AND IMPORTANT RIDING POINTS 4. Check for oncoming traffic, and FRONT then slowly turn the throttle grip (on the right) in order to take off. 5. Switch the turn signal off. EAU00434 EAU00435 Acceleration and Braking deceleration 1. Close the throttle completely. The speed can be adjusted by open- 2.
OPERATION AND IMPORTANT RIDING POINTS EAU00436 EAU04385 REAR Engine break-in 0–150 km (0–90 mi) 8 Avoid prolonged operation above There is never a more important peri- od in the life of your engine than the 1/3 throttle. 8 After every hour of operation, period between 0 and 1,000 km (600 mi).
1,000 km (600 mi) and beyond Avoid prolonged full-throttle opera- tion. Vary the engine speed occa- sionally. EC000049 If any engine trouble should occur during the engine break-in period, immediately have a Yamaha dealer Incorrect. Incorrect. check the vehicle. EAU00461 EW000058 Parking...
PERIODIC MAINTENANCE AND MINOR REPAIR EAU00473 Periodic maintenance and lubrication chart EVERY INITIAL 2,000 mi 4,000 mi ITEM ROUTINE 300 mi (3,000 km) or (6,000 km) or (500 km) 6 months 12 months • Check condition. √ √ √ Spark plug •...
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√ √ Centerstand • Repair if necessary. *Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service. **Lithium-soap-based grease EAU04316 NOTE: From 6,000 mi (9,000 km) or 18 months, repeat the maintenance intervals starting from 2,000 mi (3,000 km) or 6 months.
PERIODIC MAINTENANCE AND MINOR REPAIR 1. Panel A 1. Screw (×2) 1. Panel A 2. Screw EAU01777 EAU04475 Removing and installing the 2. Remove the screw, and then pull Panel A panel the panel off as shown. To remove the panel The panel shown above needs to be 1.
1. Spark plug cap 1. Spark plug wrench spark plug can reveal the condition of To remove the spark plug 2. Remove spark plug the engine. 1. Remove the spark plug cap. shown, with a spark plug wrench available at a Yamaha dealer.
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To install the spark plug such problems yourself. Instead, estimate of the correct torque is 1. Measure the spark plug gap with have a Yamaha dealer check the 1/4–1/2 turn past finger tight. a wire thickness gauge and, if scooter.
18 Nm (1.8 m·kgf, 13 ft·lb) ride. If any leakage is found, have a 6. Add the specified amount of the Yamaha dealer check and repair the recommended final transmission scooter. In addition, the final trans- oil, and then install and tighten mission oil must be changed as fol- the oil filler cap.
PERIODIC MAINTENANCE AND MINOR REPAIR 1. Air filter case cover 1. Clamp 1. Air filter sponge material 2. Screw (×3) 2. Carburetor intake 3. Pull the air filter sponge material EAU04349 2. Remove the air filter case cover out, clean it with solvent, and Cleaning the air filter sponge by removing the screws, then then squeeze the remaining sol-...
Therefore, all car- 5. Insert the air filter sponge materi- buretor adjustments should be left to al into the air filter case. a Yamaha dealer, who has the nec- ECA00112 essary professional knowledge and experience. 8 Make sure that the air filter...
Periodically check regarding the specified tires. EW000089 the throttle cable free play and, if necessary, have a Yamaha dealer Because loading has an enormous adjust it. impact on the handling, braking, performance and safety character-...
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Rear cargo, and accessories does fragments in it, or if the sidewall is 150 kPa 175kPa not exceed the specified maxi- cracked, contact a Yamaha dealer (1.50 kgf/cm (1.75 kgf/cm mum load for the vehicle. 22 psi) 25 psi) immediately...
PERIODIC MAINTENANCE AND MINOR REPAIR EW000079 EAU00682 Front Rear 8 Have a Yamaha dealer replace 8 It is dangerous to ride with a excessively worn tires. worn-out tire. When a tire Besides being illegal, operat- tread begins to show cross-...
If a brake shoe has worn to the point that the wear indicator reaches the wear limit line, have a Yamaha dealer replace the brake shoes as a set. 6-13...
There engine, which must be adjusted by a is no need to check the electrolyte or Yamaha dealer at the intervals speci- to add distilled water. fied in the periodic maintenance and EW000116 lubrication chart.
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PERIODIC MAINTENANCE AND MINOR REPAIR 8 Batteries produce explosive hydrogen gas. Therefore, keep sparks, flames, cigarettes, etc., away from the battery and provide sufficient ventilation when charging enclosed space. 8 KEEP THIS AND ALL BATTER- IES OUT OF THE REACH OF 1.
PERIODIC MAINTENANCE AND MINOR REPAIR EC000102 To charge the battery Have a Yamaha dealer charge the 8 Always keep battery battery as soon as possible if it charged. Storing a discharged seems to have discharged. Keep in battery can cause permanent mind that the battery tends to dis- battery damage.
Use only genuine Yamaha replace- ment parts. Imitation parts may look like Yamaha parts, but they are often inferior, have a shorter service life and can lead to expensive repair bills. 6-17...
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.
EAU03434 SCOOTER CARE AND STORAGE Before cleaning Cleaning Care 1. Cover the muffler outlet with a ECA00011 While the open design of a scooter plastic bag after the engine has reveals the attractiveness of the tech- 8 Avoid using strong acidic cooled down.
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SCOOTER CARE AND STORAGE 8 Do not use any harsh chemical 8 For scooters equipped with a After riding in the rain, near the sea products on plastic parts. Be windshield: Do not use strong or on salt-sprayed roads sure to avoid using cloths or cleaners or hard sponges as Since sea salt or salt sprayed on the sponges which have been in...
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NOTE: ing chrome- and nickel-plated, Consult a Yamaha dealer for advice surfaces. on what products to use. 4. Use spray oil as a universal cleaner to remove any remaining dirt.
SCOOTER CARE AND STORAGE Long-term c. Install the spark plug cap onto Storage Before storing your scooter for sever- the spark plug, and then place al months: the spark plug on the cylinder Short-term 1. Follow all the instructions in the head so that the electrodes Always store your scooter in a cool, “Care”...
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SCOOTER CARE AND STORAGE 5. Lubricate all control cables and NOTE: the pivoting points of all levers Make any necessary repairs before and pedals as well as of the storing the scooter. sidestand/centerstand. 6. Check and, if necessary, correct the tire air pressure, and then lift the scooter so that both of its wheels ground.
40.0 × 39.2 mm (1.57 × 1.54 in) Manufacturer TEIKEI Compression ratio 7.3:1 Model × quantity Y14P × 1 Starting system Electric and kick starter Spark plug Lubrication system Separate lubrication (Yamaha autolube) Manufacturer/model NGK/BPR7HS 0.6–0.7 mm (0.024–0.028 in) Clutch type Dry, centrifugal automatic...
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SPECIFICATIONS Transmission Tire air pressure (measured on cold tires) Primary reduction system Helical gear Front 150 kPa (1.50 kgf/cm , 22 psi) Primary reduction ratio 3.692 Rear 175 kPa (1.75 kgf/cm , 25 psi) Secondary reduction system Spur gear Wheels Secondary reduction ratio 3.230 Front...
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SPECIFICATIONS Wheel travel Front 52 mm (2.05 in) Rear 46 mm (1.81 in) Electrical system Ignition system DC. C.D.I. Charging system Type A.C. magneto Standard output 14 V, 120 W @ 5,000 r/min Battery Model GT4B-5 Voltage, capacity 12 V, 2.5 Ah Headlight type Halogen bulb Bulb voltage, wattage ×...
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. 1. KEY IDENTIFICATION 1. Key identification number 1.
(See page 3-10 for storage compart- ment opening and closing proce- dures.) Record the information on this label in the space provided. This information will be needed when ordering spare parts from a Yamaha dealer.
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should imme- diately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying Yamaha Motor Corporation, U.S.A. If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign.
CONSUMER INFORMATION EAU01055 Scooter noise regulation TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person other than for purposes of maintenance, repair, or replacement of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or (2) the use of the vehicle after such device or ele- ment of design has been removed or rendered inoperative by any person.
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PROTECT YOUR INVESTMENT Use Genuine YAMAHA Parts And Accessories. See your Authorized YAMAHA Dealer for a Genuine YAMAHA Service Manual. YAMAHA MOTOR CO., LTD. PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 2001·11–1.8×1(E)