ye video dekho kaam aayegi How to change oil in industrial sewing machine || how to change oil industrial sewing machine ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-c3b2IGbrRv0.html
Aap ki machine mein jo pump hai usmein jo jali lagi hai use theek se dekho usmein kahin kachra to nahin jama ho gaya hai agar usmein kachra jama Ho Gaya hoga to uska thik se saaf karo aur FIR machine chala kar dekho pump barabar kam Karega