Poulan PP4620AVL User Manual - Page 7

Tip of Bar CUTTERS MUST FACE IN DIIRECTION OF ROTATION Cutters Depth Gauge Adjusting the tension: Chain tension is very important. Chain stretches during use. This is especially true during the first few times you use your saw. Always check chain tension each time you use and refuel your saw. An adjusting screw (located on the guide bar) is used to adjust the tension of the chain (see illustration). S Loosen the chain brake nuts. S Turn adjusting screw clockwise until chain solidly contacts bottom of guide bar rail. Guide bar Drive Links 6. Place the chain over and behind the clutch, fitting the drive links in the clutch drum sprocket. Place chain onto the sprocket 7. Fit bottom of drive links between the teeth in the sprocket in the nose of the guide bar. 8. Fit chain drive links in to bar groove. 9. Pull the bar forward until the chain is snug in the groove of the bar. Ensure all drive links are in the bar groove. 10. Hold guide bar against the saw frame and install the chain brake. 11. Replace the chain brake nuts and tighten finger tight. Once the chain is tensioned, you will need to tighten chain brake nuts. CHAIN TENSION (Including units with chain already installed) NOTE: When adjusting chain tension, make sure the chain brake nuts are finger tight only. Attempting to tension the chain when the chain brake nuts are tight can cause damage. Checking the tension: Use the screwdriver end of the chain adjustment tool (bar tool) to move the chain around the bar. If the chain does not rotate, it is too tight. If too loose, the chain will sag below the bar. Adjusting Screw S Using the screwdriver end of the bar tool, roll chain around guide bar to ensure all links are in bar groove. S Lift up tip of guide bar to check for sag. Release tip of guide bar, then turn adjusting screw until sag does not exist. S Tighten chain brake nuts securely with the bar tool. Chain Brake Nuts S Use the screwdriver end of the bar tool to move chain around guide bar. S If chain does not rotate, it is too tight. Slightly loosen chain brake nuts and loosen chain by turning the adjusting screw. Retighten chain brake nuts. S If chain is too loose, it will sag below the guide bar. DO NOT operate the saw if the chain is loose. WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in serious injury. Chain Brake Nuts Chain Adjustment Tool (Bar Tool) 7