Honda PC50 Owner'S Manual Download Page 29 | Manualshive

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REPLACING LIGHT BULBS

When changing the light bulbs, always replace the bulb with that of

the specified type and rating. This is important to prevent the electrical

lighting circuit from malfunctioning.

Proper rating of light bulbs are listed below :
Headlight bulb : 6V-15/1 5W

Stop/ta i 11 ig ht bulb :

6 V -1 8 /6 W

■ Headlight bulb replacement procedure.

(1) Remove the cross screw located on the bottom of the headlight and

separate the headlight rim from the headlight case.

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Summary of Contents for PC50

Page 1: ...1 MODEL PC50 OWNER S MANUAL HONDA MOTOR CO LTD 1973 ...

Page 2: ......

Page 3: ...l is to enable you to keep the PC50 in the best condition and also to provide you with the procedure for performing simple adjustments However have your Honda dealer perform the more difficult servicing and adjustments shown in the maintenance schedule of in this manual Finally thank you for purchasing the PC50 we are confident that it will meet with your full satisfaction of giving you many miles...

Page 4: ...CONTENTS OPERATING TIPS 3 TOOL KIT 13 MAINTENANCE SCHEDULE 15 MAINTENANCE PROCEDURE 16 WIRING DIAGRAM 41 TECHNICAL DATA 42 ...

Page 5: ...ENTS AND CONTROLS OPERATING TIPS_________________ Rear brakfe lever Head light beam control switch Decompression lever Lighting switch Tail stop light Speedometer Front brake lever Throttle grip Horn button Cycling pedal 3 ...

Page 6: ... I 0 Frame number Engine number 3 Fuel cock 0 Fuel tank 4 ...

Page 7: ...5 ...

Page 8: ...side of the engine By shifting this lever a selection can be made bet ween engine power drive and pedal ling Position the lever in position for cycling with the pedal and in position 3 when engine power is to be utilized Caution Always stop the engine before shifting the lever ...

Page 9: ...to travel approximately 270km 170 miles at 25 kph 15 mph cruising speed Use only quality gasoline with a rating of 85 octane or higher never use gasoline oil mixture fuel since this is a 4 cycle engine Fuel cock Fuel cock 5 is located at the left under side of the fuel tank When the fuel cock is in the S position fuel can not flow from the tank Turning the fuel cock to the ON position allows fuel ...

Page 10: ... to the ON position vertical position 4 Mount the motorcycle hold down the decompression lever with the thumb and start pedalling When a speed of approximately 5kph 3mph is reached twist the throttle grip approximately 1 4 open and then release the decompression lever the engine should start 5 Once the engine starts and is operating smoothly stop pedalling and gradually open the throttle by twisti...

Page 11: ...om press the cylinder to facilitate crank ing of the engine for starting It is also used to stop the engine Choke lever Choke lever 5 is mounted on the left side of the carburetor and is raised to choke the carburetor when starting is difficult in cold weather The engine can also be stopped by the use of the choke m m 9 ...

Page 12: ...outward Pedal assist When riding with a heavy load with a rear rider or when climbing a steep grade the cycling pedal may be used to assist the engine Speedometer The speedometer is located on the headlight case and indicates the riding speed further an odometer 2 is included in the speedometer to record the mileage travelled ...

Page 13: ...ition 2 is for normal riding and when switched to position 3 for night riding the headlight and taillight will be ON Headlight beam control switch is located on the left handle bar grip H is the high beam position high beam light and taillight on L is the low beam position low beam light and taillight on 11 ...

Page 14: ...iformly Hold down the decom pression lever to stop the engine Fuel cock Switch the fuel cock to the horizontal position when parking this will shut OFF the fuel flow Steering handle lock Steering handle lock is mounted on the front fork The steering handle is locked by first turning the handle to align the handle lock pin and the stopper hole and then inserting the key and turning 180 to the right...

Page 15: ... at the right side of the fuel tank Simple adjustments and parts replacement can be performed with the tool in this kit The more difficult adjustments and repairs which are beyond the scope of the tool kit should be referred to the service dealer 13 ...

Page 16: ...n o The wrench can be used as a spark plug wrench by inserting the screwdriver bit into hole o It can also be used to remove the axle nut by inserting the screwdriver bit into hole o The wrench can be used as a handle for the screwdriver bit by using the center hole 14 ...

Page 17: ...hown below Further refer to the succeeding section for the maintenance procedure 3 p e e d o m e te r reading __ mile 500 300 1 600 1 000 3 200 2 000 4 800 3 000 6 400 4 000 8 000 5 000 9 600 6 000 Change engine oii Adjust throttle cable Adjust decompression cable Adjust brakes Clean air cleaner Greasing Adjust drive chain Adjust vaWe clearance Adjust ignition timing Adjust carburetor Clean spark ...

Page 18: ...nd of the same type do not dilute the oil by mixing gasoline or kerosene to the oil Always maintain the engine oil at the proper level insufficient oil may cause damage to the engine therefore add oil when the oil level becomes low The proper oil level is between the upper level and lower level 3 marks on the dipstick oil gauge 0 ...

Page 19: ...Viscosity of the oil to be used will vary with the outdoor tempera ture Use the chart as a guide when selecting the oil 17 ...

Page 20: ...shown on page 15 Drain the oil while the engine is warm by unscrewing the filler cap and removing the drain plug from the bottom of the crankcase and drain completely 0 I servicing procedure is explained in the previous section Fill with approximately 0 75 lit 0 8 U S qt 0 67 Imp qt of oil 18 ...

Page 21: ... is approximately 10 When it is found to be excessive adjust the throttle cable adjuster To adjust the throttle cable slide back the rubber cap on the carburetor end of the cable Turn the adjuster in the direction to increase the play and turn the adjuster in the direction to decrease the play 19 ...

Page 22: ...of movement of the decompression lever is 1 1 5 cm 0 4 0 6 in In making the adjustment loosen the cable lock screw and perform the adjustment with the cable end 2 Honda dealer will be able to provide you with the most precise adjustment 20 ...

Page 23: ...t important safety items therefore they should always be maintained in the best of condition Raise the front wheel off the ground by stand spin the front wheel and measure the amount the front break lever must be moved before the brake starts to take 21 ...

Page 24: ...ould be 0 6 1 2 in 15 30 mm When adjustment is necessary make the adjustment with the front brake adjusting nut 3 Turning in the direction of will increase the free play and when turned in the direction of the play will decreatf 22 ...

Page 25: ...ar brake Raise the rear wheel off the ground and check the free play 2 of the rear brake lever in the same way as for the front brake the play should be 0 4 0 6 in 1 0 15mm Adjustment is made by the rear 23 ...

Page 26: ...brake adjusting nut 3 Turning in the direction of will increase the play while turning in the direction of 0 will reduce the play 24 ...

Page 27: ...o the right and left while raising Retighten the bolt after adjustment Caution 1 Do not loosen the steering handle lock bolt more than two turns because the internal locking nut will drop off into the steering stem 2 There are three height adjusting marks H M and L on the steering handle stem the adjustment should be made between the H and L marks 25 ...

Page 28: ... the servicing in accordance with the maintenance schedule 1 Remove air cleaner cover and air cleaner case 2 2 Disconnect the air cleaner con necting tube D and then remove the air cleaner 3 Tap the air cleaner lightly to loosen the dust and then blow compressed air from the inside to remove the dust ...

Page 29: ...ortant to prevent the electrical lighting circuit from malfunctioning Proper rating of light bulbs are listed below Headlight bulb 6V 15 1 5W Stop ta i1 1 ight bulb 6V 18 6W Headlight bulb replacement procedure 1 Remove the cross screw located on the bottom of the headlight and separate the headlight rim from the headlight case 27 ...

Page 30: ... to the left the bulb socket will disengage from the reflector 3 Headlight bulb can be removed from the reflector 4 The vertical and horizontal beam adjustment is made with beam adjuster and lock nut D which mounts the headlight assembly 28 ...

Page 31: ... Stop taillight replacement procedure 1 Remove the two screws retaining the stop taillight lens 2 Press the bulb in and twist to the left the bulb can be removed 3 Replace with a good bulb 29 ...

Page 32: ...asily performed by removing the wheel from the motorcycle Front wheel Raise the front wheel off the ground by placing a stand under the engine Disconnect the speedometer cable 0 and the front brake cable remove the axle nut 0 and pull out the axle the wheel will drop off 30 ...

Page 33: ...ive chain adjuster nuts remove the rear axle nut 2 and then disconnect the chain by unfastening the drive chain clip Remove the rear brake adjuster nuts and pull out the axle 3 The rear wheel drop off when pushed forward slightly 31 ...

Page 34: ...n Loosen the rear axle nut allowing the ends of the drive chain to be connected with a joint clip The joint clip should be installed in the way that the open end will face in the direction opposite to rotation of the chain 32 ...

Page 35: ...e lower loop of the chain To make the chain adjustment first loosen the rear axle nut on the left side and then turn the adjusting nuts page 34 on both sides by equal amount to obtain the proper adjustment Retighten the lock nuts after adjustment When loosening chain tension push the rear wheel to permit the axle to slide forward after the adjusting nuts have been loosened 33 ...

Page 36: ... is in alignment by checking to see if the alignment mark 3 on the drive chain adjusters on both th tight and left sides are in the same position in reference to the alignment m grks 2 on the rear fork Rear wheel which is out of alignment will cause poor road holding 34 ...

Page 37: ... piston may either be in the compression or the exhaust stroke The adjustment must be made with the piston at the end of the compression stroke when both the inlet and exhaust valves are closed This condition can be determined by checking the tappets If the tappets are free it is cn indication that the valves are closed and that the piston is on compression If the tappets are tight and the valvesa...

Page 38: ...er a slight resistance when the thickness gauge is inserted After completing the adjustment retighten the adjusting screw lock nut while holding the adjusting screw to prevent turning Finally recheck the clearance again to make sure that the adjustment had not been disturbed Note The valve clearance must be checked when the engine is cold 36 ...

Page 39: ...r 2 Revolve the flywheel in the counterclockwise direction and align the F mark 5 on the flywheel to the index mark on the case At this time ideally the contact breaker point should just start to open 3 If adjustment is necessary loosen the contact breaker point screw 37 ...

Page 40: ...ate slot and make the adjustment by moving either to the right or left 4 Upon completion of adjustment retighten the contact breaker point screw and check to make sure that the contact breaker point gap at maximum opening is 0 012 0 016 in 0 3 0 4mm 38 ...

Page 41: ...arburetor adjustment after the engine has attained operating temperature First adjust the engine idle speed to approximately 1 500 rpm with the throttle stop screw and then turn the air screw 2 slowly back and forth to obtain the point of the highest engine rpm If this causes the idle speed to rise excessively reduce the speed vyith the throttle stop screw and in which case check the air screw aga...

Page 42: ...r is not available clean with a pin or wire to remove deposits from around the tip of electrode and then wash with gasoline and wipe with a dry rag Do not attempt to clean the plug by burning the carbon from the electrode 3 The standard plug originally installed is C 6HB 4 The plug gap 0 should be measured with the thickness gauge and adjusted to 0 024 0 028 in 0 6 0 7 mm by bending the ground ele...

Page 43: ...WIRING DIAGRAM HEADLIGHT CONTROL SWITCH ARRANGEMENT FLYWHEEL A C GENERATOR 41 ...

Page 44: ...0 terall length Overall width Overall he ght Wheelbase Min ground clearance i Steering angle Curb weight 42 1755 mm 69 2 in 600 mm 23 6 in 1035 mm 40 7 in 1130 mm 44 4 in 140 mm 5 5 in 65 right and left from center 50 kg 110 2 1b ...

Page 45: ...akes Fuel tank capacity Trail Caster Tire size pressure Tire size pressure Bottom link Swinging arm Internal expansion 3 0 lit 0 8 U S gal 0 66 Imp gal 60 mm 2 36 in 65 F 2 00 19 2 0 kg cm2 28 4 lbs in2 R 2 25 19 2 0 kg cm2 28 4 Ibs infy ...

Page 46: ... upfrom horizontal Overhead valve 42X35 6 mm 1 654x1 401 in 8 5 Displacement Carburetor Oil capacity jt Lubrication Reduction ratio 49 cc 3 0 cu in Side draft piston valve 0 75 lit 1 6 U S pt 1 3 lmp pt Wet sump Primary 3 000 Secondary 1 933 Gear ratio 3 214 Clutch Automatic centrifugal wet shoe type 44 ...

Page 47: ... ELECTRICAL Ignition Spark plug Headlight Stop taillight Flywheel magneto NGK C 7HS 6 V 1 5 1 5 W 6 V 18 6 W v 5 45 ...

Page 48: ...O IAI 3 IAI ...

Page 49: ...1 a r t b O 1 A 13 1 A 1 ...

Page 50: ......

Page 51: ...O 1 A I 3 IAI ...

Page 52: ...HONDA MOTOR CO LTD K1 H 5000803 PRINTED IN JAPAN ...

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