Old bullet ko start karte vakt throttle kabhi nahi dena chahiye, start hone ke bad turant itna jyada race bhi nahi karna chahiye.... Zero accelerator pe start ho to man lo ke carb. aur timing ki tunning sahi he aur start hone ke bad 30 se 45 seconds halka accelerator dene se pure engine me oil circulate ho ke dry parts lubricate honge aur bike long life smooth chalti rahegi....