Ryobi TS1144 Operation Manual - Page 30

MAINTENANCE WARNING: When servicing, use only identical replacement parts. Use of any other parts can create a hazard or cause product damage. WARNING: Always wear eye protection with side shields marked to comply with ANSI Z87.1. Failure to do so could result in objects being thrown into your eyes, resulting in possible serious injury. WARNING: Before performing any adjustment, make sure the tool is unplugged from the power supply. Failure to heed this warning could result in serious personal injury. GENERAL MAINTENANCE Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc. WARNING: Do not at any time let brake fluids, gasoline, petroleumbased products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which can result in serious personal injury. LUBRICATION All of the bearings in this tool are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. Therefore, no further lubrication is required. BRUSH REPLACEMENT See Figure 35. The saw has externally accessible brush assemblies that should be periodically checked for wear. Proceed as follows when replacement is required:  Unplug the saw.  Remove brush cap with a screwdriver. Brush assembly is spring loaded and will pop out when you remove brush cap.  Remove brush assembly.  Check for wear. Replace both brushes when either has less than 1/4 in. length of carbon remaining. Do not replace one side without replacing the other.  Reassemble using new brush assemblies. Make sure curvature of brush matches curvature of motor and that brush moves freely in brush tube.  Make sure brush cap is oriented correctly (straight) and replace.  Tighten brush cap securely. Do not overtighten. BRUSH CAP Electric tools used on fiberglass material, wallboard, spackling compounds, or plaster are subject to accelerated wear and possible premature failure because the fiberglass chips and grindings are highly abrasive to bearings, brushes, commutators, etc. Consequently, we do not recommend using this tool for extended work on these types of materials. However, if you do work with any of these materials, it is extremely important to clean the tool using compressed air. BRUSH ASSEMBLY BRUSH ASSEMBLY BRUSH CAP Fig. 35 30 - English