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Assembly is not needed on these models. See Saw Chain Tension Adjustment. 1. Lay chain out flat. 2. Loosen and remove guide bar nuts and sprocket cover. 3. Loosen and remove drive sprocket screw or remove E-ring from shaft (see Figure 4). Remove sprocket support. 4. Install guide bar onto saw body. Assemble center slot of guide bar onto guide bar bolts. 5. To replace sprocket support, repeat step 3 in reverse order. Firmly tighten drive sprocket screw with #2 Phillips screwdriver (if applicable)