Yamaha YZF-R1 2007 Service Manual

ENGINE3-10c. Tighten the locknut “1”.WARNINGEWA4C81006After adjusting the throttle cable free play,start the engine and turn the handlebars tothe right and to the left to ensure that thisdoes not cause the engine idling speed tochange.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS20680CHECKING THE SPARK PLUGSThe following procedure applies to all of thespark plugs.1. Remove:• Side cowlings• Lower cowlingsRefer to "GENERAL CHASSIS" on page 4-1.2. Remove:• Radiator upper bolts• Radiator lower boltRefer to "RADIATOR" on page 6-1.3. Disconnect:• Ignition coils4. Remove:• Spark plugsCAUTION:ECA13320Before removing the spark plugs, blowaway any dirt accumulated in the sparkplug wells with compressed air to prevent itfrom falling into the cylinders.5. Check:• Spark plug typeIncorrect → Change.6. Check:• Electrode “1”Damage/wear → Replace the spark plug.• Insulator “2”Abnormal color → Replace the spark plug.Normal color is medium-to-light tan.7. Clean:• Spark plugs(with a spark plug cleaner or wire brush)8. Measure:• Spark plug gap “a”(with a wire thickness gauge)Out of specification → Regap.9. Install:• Spark plugs• Ignition coilsNOTE:Before installing the spark plug, clean thespark plug and gasket surface.10. Install:• Radiator upper bolts• Radiator lower boltRefer to "RADIATOR" on page 6-1.11. Install:• Side cowlings• Lower cowlingsRefer to "GENERAL CHASSIS" on page 4-1.Direction “a”Throttle cable free play is increased.Direction “b”Throttle cable free play is decreased.Manufacturer/modelNGK/CR9EKSpark plug gap0.6–0.7 mm (0.024–0.028 in)Spark plug13 Nm (1.3 m·kg, 9.4 ft·lb)Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk