Do you have a question about the Echo CS-3700ES and is the answer not in the manual?
Read operator's manual, be familiar with controls, contact dealer if questions.
Be in good physical and mental health; do not operate when fatigued, ill, or under influence of alcohol/drugs.
Install guide bar and chain as follows. Stop engine before operation. Move chain brake lever to remove clutch cover.
Place saw on ground, accelerate engine, operate brake by turning wrist. Chain must stop immediately.
Pull front hand guard towards operator. If chain does not stop immediately, take saw to dealer.