Poulan ES400 User Manual - Page 13

Tighten chain Loosen chain Adjusting Wheel 5. Using screwdriver, move chain around guide bar to ensure all links are in bar groove. 6. While lifting tip of guide bar, tighten bar knob securely (clockwise). Hand tighten only! Bar Knob CHECK CHAIN SHARPNESS A sharp chain makes wood chips. A dull chain makes a sawdust powder and cuts slowly. See CHAIN SHARPENING in the SERVICE AND ADJUSTMENTS section. CHECK GUIDE BAR Conditions which require guide bar maintenance: S Saw cuts to one side or at an angle. S Saw has to be forced through the cut. S Inadequate supply of oil to the bar and chain. Check the condition of the guide bar each time the chain is sharpened. A worn guide bar will damage the chain and make cutting difficult. After each use, with unit disconnected from power source, clean all sawdust from the guide bar and sprocket hole. To maintain guide bar: S Disconnect the chain saw from the pow- er source. S Loosen and remove bar clamp nuts. Remove bar and chain from saw. S Clean the oil holes and bar groove after each 5 hours of operation. Remove Sawdust From Guide Bar Groove Oil Holes TIGHTEN 7. Push lever on bar knob down to return lever to closed/locked position. WARNING: Failure to push lever on bar knob down to closed/locked position could result in serious personal injury or damage to your chain saw. 8. Use a screwdriver to move chain around guide bar. 9. If chain does not rotate, it is too tight. Loosen bar knob 1 turn (counterclockwise); then, loosen chain by turning the adjusting wheel 1/4 turn (upward direction). Retighten bar knob. 10. If chain is too loose, it will sag below the guide bar. DO NOT operate the saw if the chain is loose. S Burring of guide bar rails is a normal process of rail wear. Remove these burrs with a flat file. S When rail top is uneven, use a flat file to restore square edges and sides. File Rail Edges and Sides Square Worn Groove Correct Groove Replace the guide bar when the groove is worn, the guide bar is bent or crack--ed, or when excess heating or burring of the rails occurs. If replacement is necessary, use only the guide bar specified for your saw in the repair parts list or on the decal located on the chain saw. LUBRICATION Bar Oil Fill Cap WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in serious injury. 13