Ryobi P5452BTL Operation Manual - Page 24

MAINTENANCE DEPTH GAUGE CLEARANCE See Figure 29 - 31.  The depth gauge should be maintained at a clearance of .025 in. Use a depth gauge tool for checking the depth gauge clearances.  Every time the chain is filed, check the depth gauge clearance. Use a flat file and a depth gauge jointer to lower all gauges uniformly. Depth gauge jointers are available in .020 in. to .035 in. Use a .025 in. depth gauge jointer. After lowering each depth gauge, restore original shape by rounding the front. Be careful not to damage adjoining drive links with the edge of the file. Depth gauges must be adjusted with the flat file in the same direction the adjoining cutter was filed with the round file. Use care not to contact cutter face with flat file when adjusting depth gauges. MAINTAINING THE GUIDE BAR See Figure 32. CAUTION: Make sure the chain has stopped and the battery pack has been removed before you do any work on the saw to avoid accidental starting or contact with the moving chain that may result in injury. Proper maintenance will maximize the useful life of the guide bar. Each day of use: Clean the bar and check for wear and damage. Feathering or burring of the bar rails is a normal process of bar wear, but such faults should be smoothed with a file as soon as they occur. Each week of use: n Reverse the guide bar on the saw to distribute the wear. n Lubricate the socket at the end of the guide bar using a grease syringe in the lubricating hole. n Turn the guide bar and check that the lubrication holes and chain groove are free from impurities. RESTORE ORIGINAL SHAPE BY ROUNDING THE FRONT Fig. 31 SPROCKET LUBRICATION HOLE LUBRICATION HOLES Fig. 32 A bar with any of the following faults should be replaced immediately: n Wear inside the bar rails that permits the chain to lay over sideways n Bent guide bar n Cracked or broken rails n Spread rails MAINTAINING THE SAFE-T-TIP™ NOSE GUARD See Figures 33 - 34. WARNING: This saw comes without the Safe-T-Tip antikickback device installed. Install the Safe-T-Tip prior to using the saw and check the tightness of the mounting screw each time the saw is used. Use the following instructions to tighten the mounting screw of the nose guard. These are specially hardened screws. If you cannot install the screw tightly, replace both the screw and the SAFE-T-TIP™ before further operation. NOTE: Do not replace the screw with an ordinary screw. Use only identical replacement parts from the manufacturer when replacing parts. In addition to preventing chain contact with solid objects at the nose of the bar, the SAFE-T-TIP™ also 24 - English