它具有调节阀和浮针不锈钢气阀墨盒。
It features adjustable floating needle valves and stainless steel air valve cartridges.
附件中的位置规可以快速准确的调节机针和旋梭的位置。
The positioning block can regulate positions of the machine needle and the rotary book.
请特别注意：在一定周期内清洁化油器里面的燃油滤网，否则将引起油针调节失灵，发动机工作不稳等情况。
NOTICE: Please clean the fuel filter in the carburetor periodically, otherwise failure occurs with needle adjustment and the engine may work unsteadily etc.
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