8-22The throttle cable free play should measure 1.0–3.0 mm (0.04–0.12 in) at the throttle lever. Period-ically check the throttle cable free play and, if nec-essary, have a Yamaha dealer adjust it.Timing chainThe timing chain stretches with use, resulting in im-proper valve timing and engine noise. To preventthis from occurring, the timing chain tensionermust be adjusted by a Yamaha dealer at the inter-vals specified in the periodic maintenance and lu-brication chart.Valve clearanceThe valve clearance changes with use, resulting inimproper air-fuel mixture and/or engine noise. Toprevent this from occurring, the valve clearancemust be adjusted by a Yamaha dealer at the inter-vals specified in the periodic maintenance and lu-brication chart.1. Throttle lever free play1BrakesReplacement of brake components requiresprofessional knowledge.Brake service should beperformed by a Yamaha dealer.WARNINGOperating with improperly serviced or adjustedbrakes could lead to a loss in braking abilityand an accident.8Checking the front brake shoesThe front brake shoes must be checked for wear atthe intervals specified in the periodic maintenanceand lubrication chart. Front brake is provided with awear indicator on front brake lever, which allows you
