Yamaha MT-03 Service Manual

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3-6ENGINEThrottle body enda. Loosen the locknut “2” on the accelerator cable.b. Turn the adjusting nut “3” in direction “a” or“b” until the specified throttle cable free playis obtained.c. Tighten the locknut.NOTE:If the specified throttle cable free play cannotbe obtained on the throttle body end of the ca-ble, adjust the free play at the handlebar end ofthe cable using the adjusting nut.Handlebar enda. Loosen the locknut “1”.b. Turn the adjusting nut “2” in direction “a” or“b” until the specified throttle cable free playis obtained. 12 3b aDirection “a”Throttle cable free play is increased.Direction “b”Throttle cable free play is decreased.c. Tighten the locknut.WARNINGAfter 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.EAS00060CHECKING THE SPARK PLUG1. Disconnect:• Spark plug cap2. Remove:• Spark plugCAUTION:Before removing the spark plug, blow awayany dirt accumulated in the spark plug wellwith compressed air to prevent it fromfalling into the cylinder.3. Check:• Spark plug typeIncorrect → Change.21baSpark plug type (manufacturer)CR7E (NGK)4. Check:• Electrode “1”Damage/wear → Replace the spark plug.• Insulator “2”Abnormal color → Replace the spark plug.Normal color is medium-to-light tan.Direction “a”Throttle cable free play is increased.Direction “b”Throttle cable free play is decreased.2. Adjust:• Throttle cable free playNOTE:When the throttle is opened, the acceleratorcable “1” is pulled.a