Yamaha YFM660RN Service Manual

Contents

3 - 14CHKADJADJUSTING THE SPEED LIMITERADJUSTING THE SPEED LIMITERThe speed limiter keeps the carburetor throttlefrom becoming fully-opened even when thethrottle lever is applied to the maximum posi-tion. Screwing in the adjuster stops the enginespeed from increasing.1.Check: Speed limiter length aOut of specification → Adjust.Speed limiter length:12 mm (0.47 in)2.Adjust: Speed limiter length***********************************************Speed limiter length adjustment steps: Loosen the locknut 1. Turn the adjuster 2 in or out until the speci-fied speed limiter length is obtained. Tighten the locknut.WARNING Particularly for a beginner rider, thespeed limiter should be screwed in com-pletely. Screw it out little by little as theirriding technique improves. Never removethe speed limiter for a beginning rider. For proper throttle lever operation do notturn out the adjuster more than 12 mm(0.47 in). Also, always adjust the throttlelever free play to 3 ~ 5 mm (0.12 ~ 0.20 in).***********************************************Turning in Speed limiter length isdecreased.Turning out Speed limiter length isincreased.