Yamaha TT-R50EY Owner's Manual

Also see for TT-R50E: Owner's manual Owner's manual Owner's service manual Owner's manual Owner's manual

Contents

PERIODIC MAINTENANCE AND ADJUSTMENT7-117EAU21362Adjusting the engine idlingspeedThe engine idling speed must bechecked and, if necessary, adjusted asfollows at the intervals specified in theperiodic maintenance and lubricationchart.TIPA diagnostic tachometer is needed tomake this adjustment.1. Attach the tachometer to the sparkplug lead.2. Start the engine and warm it up forseveral minutes at 1000–2000r/min while occasionally revving itto 4000–5000 r/min.TIPThe engine is warm when it quickly re-sponds to the throttle.3. Check the engine idling speedand, if necessary, adjust it to spec-ification by turning the throttle stopscrew. To increase the engineidling speed, turn the screw in di-rection (a). To decrease the en-gine idling speed, turn the screw indirection (b).TIPIf the specified idling speed cannot beobtained as described above, have aYamaha dealer make the adjustment.EAU21370Adjusting the throttle cablefree playThe throttle cable free play should mea-sure 3.0–5.0 mm (0.12–0.20 in) at thethrottle grip. Periodically check thethrottle cable free play and, if neces-sary, adjust it as follows.TIPThe engine idling speed must be cor-rectly adjusted before checking and ad-justing the throttle cable free play.1. Loosen the locknut.1. Throttle stop screwEngine idling speed:1600–1800 r/min1(a)(b)1. Throttle cable free playU1P614E0.book Page 11 Thursday, April 24, 2008 4:15 PM