301 lack of revs

Forums Technical Two Stroke: Hints and Tips 301 lack of revs

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    • #5101

      looking for information as to why my 301 is unwilling to rev beyond 4500 have changed gearbox sprocket from 22 to 20 teeth with no real difference my wilf green 300 would rev out no bother just as all my other mzs in the past i think there was mention in an old mag about the porting being different? cheers mick hill

    • #5108
      Michael Lovegrove

      Hi, sounds like the exhaust could be blocked?

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