Yamaha QT50 Owner'S Manual Download | Manualshive

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Summary of Contents for QT50

Page 1: ...OWNER S MANUAL LIT 11626 02 11 3L8 28199 11 ...

Page 2: ...f the front rack car rier is 3 kg 7 lbs The load capacity of the rear rack carrier is 5 kg 11 lbs 4 This bike is designed for on road use only It is not suitable for off road use 1 5 Gasoline is highly flammable Always turn off the engine when re fuelling Take care not to spill any gasoline on the engine or muffler w hen refuelling If any gasoline spills on the engine or muffler w ipe it off immed...

Page 3: ... 9 If you should swallow some gasoline or inhale to many gasoline vapors see your doctor immediately If any gasoline spills on your skin or clothing im mediately wash with soap and water and change your clothes 10 Do not run the engine in a closed un ventilated place Exhaust gases are harmful SAFETY RIDING POINTS 1 Give a clear signal in the following instances Turning left Turning right 2 ...

Page 4: ...rs A driver might not see you and open a door in your path 5 Street car rai ls iron plates on road con struction sites and man hole covers be come extremely slippery when wet Slow down and cross them with cau tion Keep the machine upright It could slide out from under you 6 The brake lining could get wet when you wash the machine After washing the machine check the brakes before riding 7 Always we...

Page 5: ...s about carrying luggage Use a strong cord to secure any luggage to the lug gage racks A loose load will affect the stability of the bike and could divert your attention from the road 4 9 Never ride with just one hand on the handlebars Always ride with both hands on the handlebars and both feet on the footrests ...

Page 6: ...s operation and basic maintenance and inspection items of this bike If you have any questions regarding the operation or mainte nance of your bike consult your Yamaha dealer NOTICE Some data in this manual may become outdated due to changes made to this model in the future If you have any question regarding this manual or your bike please consult your Yamaha dealer 5 ...

Page 7: ...ION A CAUTION indicates special procedures that must be fol lowed to avoid damage to the bike WARNING A WARNING indicates special procedures that must be followed to avoid injury to a bike operator or person inspect ing or repairing the bike OT50G OWNER S MANUAL FIRST PRINTING APRIL 1979 ALL RIGHTS RESERVED BY YAMAHA MOTOR COMPANY LTD JAPAN PRINTED IN JAPAN LIT 11626 01 96 6 ...

Page 8: ...ONTENTS MACHINE IDENTIFICATION 8 CONTROL FUNCTIONS 9 PRE OPERATION CHECKS 15 RIDING POINTS 21 PERIODIC MAINTENANCE 29 CONSUMER INFORMATION 32 WARRANTY INFORMATION 34 SPECIFICATIONS 36 WIRING DIAGRAM 40 7 ...

Page 9: ...ering head pipe 1 Frame serial number 8 Engine serial number The engine serial number is stamped into the left side of the engine lower of the crankcase 1 Engine serial number NOTE The first three digits of these numbers are for model identification the remaining digits comprise the unit production number ...

Page 10: ...nt wheel 3 Fuel tank 14 Footrest 4 Oil tank 15 Muffler 5 Rear wheel 16 Rear view mirror 6 Rear shock absorber 17 Rear brake lever 7 Kick crank 18 Left handle switches 8 Tail stop light 19 Speedometer 9 Flasher light 20 Engine stop switch 10 Rear rack 21 Front brake lever 11 Seat 22 Throttle grip 9 ...

Page 11: ...ter lights always come on automatically Headlight functions onlv when the engine is running _ i J I t IL 1 e YAMAHA fff f ti HORN switch Press the button to sound the horn TU RN SIGNAL switch This is a three way switch the center posi toin is off Turn to the L position for the left flasher and to the R position for the right flasher 10 LIGHTS switch dimmer Turn to the HI position for the high beam...

Page 12: ...h 11 OIL warning light Red The light comes on when the main switch position is or when there is little oil in the oil tank during operation If the oil warning light comes on during operation refill with Yamalube 2 cycle Oil or an equivalent im mediately When the tank is refilled the oil warning light will go off NOTE If the oil warning light will not come on while the key is on the position have y...

Page 13: ... 2 TUAN indicator light Starter lever 3 HIGH BEAM indicator light 4 Odometer When starting a cold engine turn the lever in 12 the direction of the arrow After a warm up run turn the lever to its home position I 1 Starter lever Fuel and oil tank To supply fuel and or engine oil lift up the seat Then remove the fuel tank filler cap and or oil tank filler cap by turning them counterclockwise ...

Page 14: ...n fuel will flow Normal riding is done with the lever in this position OFF With the lever in this position fuel wil l not flow Always set the lever in this position when the engine is not run ning RES If you run out of fuel while riding turn the lever to this position NOTE Set the fuel petcock lever to RES and have the fuel tank filled as soon as possible After refilling be sure to set the lever t...

Page 15: ...ON position OFF position 14 RES position Front brake lever The front brake lever is located on the right handlebar pull it toward the handlebar to activate the front brake ...

Page 16: ...k the fol lowing points NOTE If any of the following items are not function ing properly do not operate the vehicle until the items have been inspected and repaired If necessary ask or call your Yamaha dealer or other qualified service establishment Fuel level Make sure there is sufficient fuel in the tank Recommended fuel Regular leaded gasoline Fuel tank capacity 2 3 lit 0 6 U S gal ...

Page 17: ...oking or near an open fire Engine oil level Make sure there is sufficient oil in the oil tank Recommended oil Yamalube 2 cycle Oil or equivalent Oil tank capacity 0 8 lit 0 8 U S qt 16 CAUTION If the oil tank level lowers during opera tion the oil warning light comes on Re fill the tank immediately If not engine trouble could occur Brake front and rear Check for correct play in the brake levers an...

Page 18: ...le grip to see if it operates properly and whether the play is normal Make certain the throttle snaps closed when released 17 Lights Signals Check the headlight tail stoplight turn sig nal lights and all the indicator lights to make sure they are in working condition ...

Page 19: ... tire pressures Also check for nails fractions of glass or stones embedded in tire treads Check the run out of each tire rim and recondition as necessary Ask your Yamaha dealer or other qualified service establishment if required 18 ...

Page 20: ...t be damped and will be carried to the frame and handlebars thus adversely affecting riding comfort In addition machine stability will be poor when making a turn If tire pressures are too low tires will be deformed greatly thus shortening tire life When braking the wheels tires could slip over wheel rims and tire tubes could broken When turning the corner or the curve the bike could easily turn ov...

Page 21: ...lb If tire treads are excessively worn the bike tends to slip or skid on wet roads or even on paved roads covered with dirt Minimum depth of groove on tread Front 0 8 mm 0 03 in Rear 0 8 mm 0 03 in As a tire is worn heavily the SLIP SIGN wi ll appear on the tread If so replace the tire immediately 20 ...

Page 22: ... engine WARN ING Befor starting the engine be sure to use the mainstand for safety 1 Turn the fuel petcock lever to the ON position 2 Turn the ignition key to the ON posi 21 tion and turn the engine stop switch to the RUN position ...

Page 23: ...e kick crank push down lightly with your foot until the gears engage and then kick briskly downward 6 Run the engine for 10 30 seconds and return the starter lever to its home posi tion If the engine shows a sign of stalling open the throttle grip slightly and apply the starter lever two or three seconds ...

Page 24: ...life always warm up the engine about 1 3 minutes before rid ing the bike Never accelerate hard with a cold engine 23 Starting the bike After warmping up the engine 1 Hold the brake lever for the rear brake with your left hand and push the bike off the center stand while holding the rack carrier with your right hand ...

Page 25: ... before entering traffic 24 3 Turn out the throttle grip on the right handlebar slowly and you can now start off After starting off turn off the flasher Acceleration The speed can be adjusted by opening and closing the throttle grip Turning it out in creases the speed and turning it in de creases the speed ...

Page 26: ...ike to skid or over turn Apply the brakes carefully while lean ing over to one side Improper braking could lead to a skid Braking out a wet road will be very difficult Street car rails metal plates on road construction sites and man hole covers become particularly slipperly when they get wet Cross them slowly and cautiously Braking on a hill can be difficult Proceed slowly when riding downhill ...

Page 27: ...ike tends to over turn as a result of slippage or skidding Avoid the quick application of brakes while making a turn It may cause the bike to overturn 26 Turning left turning right Give a clear signa l in the following cases Turning left Apply the left flasher or raise your left hand ...

Page 28: ...Turning right Apply the right flasher or raise your left hand 27 Stopping 1 Turn up the right flasher 2 Turn the throttle grip in the direction shown in the figure ...

Page 29: ... the bike at the desired position 4 Turn the ignition key to OFF 28 5 Set the fuel petcock lever to OFF Parking WARNING I The muffler and exhaust pipe are heated up Park the bike in a place where pedestrians or children are not likely to touch the vehicle ...

Page 30: ...le in the safest and most efficient condition possible Safety is an obligation of the motorcycle owner The most important points of motorcycle inspec tion adjustment and lubrication are ex plained on the following pages CAUTION 29 If the owner is not familiar with motor cycle service this work should be done by a Yamaha dealer or other qualified service establishment ...

Page 31: ...gs 0 0 0 Clean Refit Adjust 0 Autolube pump Check Adjust Air bleeding 0 0 0 0 Brake system complete Check Adjust as required Repair as required 0 0 0 3 Months Wheels and tires Check pressure Wear Balance Run out 0 0 0 0 Suspension system Check operation Repair as required 0 0 0 0 Fuel petcock Clean Flush tank as required 0 0 0 0 Battery Top up Check specific gravity and breather 0 0 0 0 pipe Light...

Page 32: ...ium base grease 0 0 housing Brake lever Apply lightly lithium base grease 0 0 0 Brake cam shaft Apply lightly Lithium base grease 0 0 0 Steering bearings Inspect thoroughly pack Medium weight wheel bearing Check 2 moderately grease Years Speedometer gear Inspect thoroughly pack Lithium base grease 2 housing morterately Years Wheel bearings Do not over pack Medium weight wheel bearing 0 yearly or g...

Page 33: ...ented represents results obtainable by skilled drivers under controlled road and vehicle conditions and the information may not be correct under other conditions Description of vehicles to which this table applies Yamaha motorcycle QT50G A Fully Operational Service Brake Load 02s 2 Light Maximum I I I NOTE The statement above is required by U S Fe 0 100 200 300 deral law Partial failures of the br...

Page 34: ... by skilled drivers under controlled road and vehicle conditions and the information may not be correct under other conditions Description of vehicles to w hich this table applies Yamaha motorcycle QT50G Summary table Low speed pass 61 8 8 feet 16 36 seconds High speed pass Not capable IN ITIAL SPEED 20 mi h LOW SPEED LIM ITING SPEED 35 mi h TOTAL PASSING DISTANCE FEET TOTAL PASSING TIME SECONDS 4...

Page 35: ...turning radius 1 500 mm 59 1 in Climbing capacity 9 6 Engine Type 2 stroke gasoline Cylinder Single forward inclined Displacement 49 cc 3 0 cu in Bore and stroke 40 0 x 39 2 mm 1 57 x 1 54 in Compression ratio 6 0 1 Starting system Kick Ignition system C D I Gasoline tank capacity 2 3 lit 0 6 US gal Oil tank capacity 0 8 lit 0 8 US qt Lubrication system Separate lubrication Yamaha Autolube 36 ...

Page 36: ...nsmission Primary reduction system Gear Primary reduction ratio 63 33 1 909 Secondary reduction system Gear Shaft drive Secondary reduction ratio 19 15 x 57 10 7 220 Clutch type Wet centrifugal automatic Steering Caster 25 Trail 75 mm 2 95 in Tire size Front 2 00 14 4PR Rear 2 25 14 4PR Suspension Front Telescopic fork Rear Unit swing 37 ...

Page 37: ...ring Rear Coil spring oil damper Frame Steel tube underbone Electrical Headlight 6V 20W 20W Tail Stop light 6V 3W 17W Flasher light 6V 17W Flasher pilot light 6V 3W High beam indicator light 6V 3W Oil warning light 6V 3W Meter light 6V 3W 38 ...

Page 38: ...LASHER mr lJ 1 LIGHT L 6V17W 111 I ffiEE REARSTOP L d L p g SWITCH r L o Lo N ON DIMMER SWITCH FLASHER HORN SWITCH HORN SWITCH 40 C D I MAGNETO 6V3W 17W lAIL STOP LIGHT 0 m Tl AR FLASH o J LIGHT L R 6V17W 0 SPARK PLUG ...

Page 39: ...COLOR CODE R Red Dg Dark green L Blue Ch Dark brown B Black Gy Gray P Pink Br Brown Y Yellow G Y Green Yellow G Groon B R Black Red O Orange W R White Red W Wh1to Br W Brown White L W Blue White 41 ...

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