Homelite UT10589 User Manual - Page 36

MAINTENANCE CHECKING THE FUEL FILTER See Figure 69. Check the fuel filter periodically. If contaminated or damaged, have fuel filter replaced by an authorized service center. REPLACING THE SPARK PLUG See Figure 70. This engine uses a Champion RCJ-6Y with 0.025 in. electrode gap. Use an exact replacement and replace every 50 hours or more frequently, if necessary. n Loosen the spark plug by turning it counter- clockwise with a wrench. n Remove the spark plug. n Hand thread the new spark plug, turning it clockwise. Tighten securely with wrench. NOTE: Be careful not to cross-thread the spark plug. Cross-threading will seriously damage the cylinder. CLEANING THE EXHAUST PORT, MUFFLER, AND SPARK ARRESTOR NOTE: Depending on the type of fuel used, the type and amount of lubricant used, and/or your operating conditions, the exhaust port, muffler, and/ or spark arrestor screen may become blocked with carbon deposits. If you notice a power loss with your gas powered tool, you may need to remove these deposits to restore performance. We highly recommend that only qualified service technicians perform this service. The spark arrestor must be cleaned or replaced every 50 hours or yearly to ensure proper performance of your product. Spark arrestors may be in different locations depending on the model purchased. Please contact your nearest service dealer for the location of the spark arrestor for your model. WARNING: To avoid a fire hazard, never run the chain saw without the spark arrestor in place. FUEL FILTER Fig. 69 CLEAN THE CHAIN BRAKE Fig. 70 Fig. 71 INSPECTING AND CLEANING CHAIN BRAKE See Figure 71. n Always keep the chain brake mechanism clean and lightly brush the linkage. n Always test the chain brake performance after cleaning. Refer to Operating Chain Brake for additional information. Page 36 - English