... the chain,the space of chain and guide is 1cm)during the installing process,or else it will influence the effects.3 ... may be screw loose,tighten it according to the instructions before using,in general,disassembling is not recommended.7.Before using,carburetor ... if blunt,or else it will affect the effects and the chainsaw life cycle.10.When not in use,it is better to be packed ...