User manual YAMAHA YSR50T SERVICE MANUAL

[. . . ] @YAM AHA Service YS R5OT SERVICE MANUAL 01987 by Yamaha Motor Corporation, U. S. A. 1st Edition, March 1987 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, U. S. A. LIT-Il616-O6-05 NOTICE This manual was written by the Yamaha Motor Company primarily for use by Yamaha dealers and their qualified mechanics. [. . . ] Install: @Shiftshaft e sure the shift lever correctly en KlCK AXLE I . Install: @Kickaxle assembly : 1 eMake sure that the kick stopper is sto n epf the crankcase. at the kick clip is engaged with the crankcase hole. 2. Hook the kick spring @). 3, Install: @Kickidle gear @Washers@ a @ @ @ Circlip Shift lever Rotor @ Return spring @ Pin Oil seal @ Kick crank @ 0 Collar @ Return spring 0 Kick axle Kick idle gear IMAWY DRIVE GEAR I . Install: primary drive gear @ oThrust washer @ ~Gonical spring washer NOTE: e sure to install the conical spring was as shown. oApply the transmission oil onto the collars. ------- , 2. Tighten: o N u k (Primary drive gear) NOTE: - - etween the teeth of the - 3. Install: @Thrust washer @Clutchboss Q a 13 e sure to install the conical spring washer as shown. 4. Tighten: nut (Clutch boss) niversal Clutch clutch boss. a older @ to hold 5. Install: lutch damper Q and f r i c t i ~ n plate alter- friction plate and second clutch damper. . Tighten the bolts in stages, using a crisscross pattern. @Gasket(Crankcase cover-New) @ Tighten the screws in stages, using a crisscross A @ @ @ @ Straight key @ Clutch boss @ @ @ @ @ Primary drive gear 0 Clutch damper Friction plate Clutch plate Cushion spring Conical spring washer Push rod # 1 Pressure plate Conical spring washer Push rod # 2 Ball @ Thrust washer Collar @ O-ring @ Clutch housing a @ 0 To the small end bearin bearing. the crankcase. - Asways use a new piston pin d i p . 4. Install: Install the cylinder with one ha d while compressing the piston rings wit the other hand. Tighten the nuts in stages, using a crisscross 7. Install: a Cylinder(Cylinder head) head @ Gasket @ @ @ Spark plug Cylinder Gasket (Cylinder) Vkl A Note the following points. Install: Engine assembly Q efore installing t e drive sprocket, loosen the rear wheel axle and push forward the rear wheel. - Tighten the screws in stages, using a crisscross pattern. . , p - P rive chain slack @ ENT" section. Adjust: @Throttle cable free play @ @ @ @ a Spring (Throttle valve) Jet needle assembly Throttle valve Throttle stop screw Pilot screw Starter plunger Pilot jet @ Main jet @ Valve seat assembly 0 Float @ Pin (Float) @ Float chamber @ Drain screw Float height REb?QOAk MOTE : - -- , . The fallov2;ir-g parts can be cleaned and inspected without carburetor disassern "Pilot screw 0 Lower cowling Refer s "'CHA o sectioja. 2 , Turn the fuel cock to "OFF" piaskion and disconnect the fuel hose a. 3, Loosen: Screws (Carburetor joint) 4" Eernove: srburetor assembly a DiSASSEMBL?!Remove: ~Throttie valve assembly oSpring (Throttle valve) @ 2. Remove: tarter plunger throttle stop screw @ pilot screw g ] I . Inspect: @Carburetorbody @Fuelpassage Contamination-~Clean indicated. (Do not use any caustic carburetor cleaning solution). low out all passages and jets with compressed air. P . 2. Inspect @Float amage+ Replace. Inspect: o Needle va!ve @Valveseat @ @Gasket@ amage/Wear/Contamination+ Replace. [. . . ] Lead+Brown @) Lead Battery ( Battery ( - 1 Lead-+Black/Red @ Lead I ELEC 1 I 1 s + INDICATOR LIGHT DOES NOT COME ON. "OIL" warning indicator light (L. E. D. ) is faulty, replace it. II I1 INDICATOR LIGHT COMES ON. 2. Oil level switch check ( 1 ) *Remove the oil level switch from the oil tank. . Connect the Pocket Tester (M x 1) to the oil level switch lead. Tester ( + 1 Lead+Black/Red @) Lead Tester ( - 1 Lead-+Sky blue @ Lead ( ( . Check the oil level switch for continuity. [. . . ]