Main features
Trouble shooting

Cleaning parts

Cleaning times Remark
1£©The air filter of step motor¡¯s drive box  Once a week  
2£©Air filter of power supply box  Once a week  
3£©Frame guide rails  Once a week (before oil)  
4£©Needle bar case slide rails   Before oiling  
5£©Rotary hooks  Before oiling  With a brush
6£©Thread take-up springs  Every day  
7£©Other parts  oil properly ¡¡