Ryobi RY10519 Operator's Manual - Page 27
Adjusting, Bar Studs, Guide Bar, Plate, Clutch, Cover, Sprocket, Mounting, Chain, Tensioning, Screw
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MAINTENANCE n Replace the clutch cover and bar mounting nuts. n Fingertighten the bar mounting nuts. The bar must be free to move for tension adjustment. n Remove all slack from the chain by turning the chain tensioning screw clockwise until the chain seats snugly against the bar with the drive links in the bar groove. n Lift the tip of the guide bar up to check for sag. n Release the tip of the guide bar and turn the chain tensioning screw 1/2 turn clockwise. Repeat this process until sag does not exist. n Hold the tip of the guide bar up and tighten the bar mounting nuts securely. The chain is correctly tensioned when there is no sag on the underside of the guide bar, the chain is snug, but it can be turned by hand without binding. Ensure that the chain brake is not set. NOTE: If chain is too tight, it will not rotate. Loosen the bar nuts slightly and turn the tension adjuster 1/4 turn counterclockwise. Lift the tip of the guide bar up and retighten the bar nuts securely. Ensure that the chain will rotate without binding. BAR STUDS ADJUSTING PIN GUIDE BAR PLATE SPROCKET BAR MOUNTING CLUTCH NUTS COVER Fig. 39 Page 27 - English CHAIN TENSIONING SCREW Fig. 40