Ryobi RY3716 Operation Manual - Page 29

MAINTENANCE ADJUSTING THE CHAIN TENSION See Figures 43 - 45. WARNING: Never touch or adjust the chain while the engine is running. The saw chain is very sharp. Always wear protective gloves when performing maintenance on the chain. n Stop the engine before setting the chain tension. n Make sure the bar mounting nuts are loosened to finger tight. n Turn the chain tensioning screw clockwise to tension the chain. NOTE: A cold chain is correctly tensioned when there is no slack on the underside of the guide bar, the chain is snug, and it can be turned by hand without binding. n Retension the chain whenever the flats on the tie straps hang out of the bar groove. NOTE: During normal saw operation, the temperature of the chain increases. The tie straps of a correctly tensioned warm chain will hang approximately .050 in. out of the bar groove. The tip of the combination wrench can be used as a guide to help determine the correct warm chain tension. NOTE: New chains tend to stretch; check the chain tension frequently and tension as required. CAUTION: A chain tensioned while warm may be too tight upon cooling. Check the "cold tension" before next use. FLATS ON TIE STRAPS Fig. 40 Fig. 41 Fig. 42 Fig. 43 ≈ .050 in. (1.25 mm) ≈ .050 (1.25 mm) Fig. 44 Page 29 - English Fig. 45