Piston cleaning. Remove carbon and varnish from piston surfaces. Do not use a caustic cleaning solution or a wire Brush. These could damage the piston-skirt finish.
绝不能使用苛性溶液或金属刷清除活塞表面的积碳和漆膜。因为这样会损坏活塞裙部的粗糙度。
2
If you use colour stain, can say take alcohol solution dye 6 points, alcohol 70 points and shellac varnish 24 points, mixed evenly, with manual brush or spraying dyeing.