piston bohot tight hai cyliner me boring theek nai hoi hai, aik pani ki bottle lo us kay cap me soorakh karo or thoray waqfay say bottle se cylinder or head pe pani dalo or bike ko kharay kar kay 6 din rawan karo is tarhan pani dal dal kar, hawa ki direction me bike khari karo. ya warna dobara cylinder ko piston kay mutabi bore kar wao.