Ryobi RYi4022X Operation Manual - Page 21

MAINTENANCE CHANGING ENGINE LUBRICANT See Figure 13. For best performance, engine lubricant should be changed after every 100 hours or 6 months of operation. n Remove the oil fill cap/dipstick. n Unscrew the oil drain plug and remove.  Allow lubricant to drain completely into an approved container. NOTE: Drain the lubricant while the engine is still warm but not hot. Warm lubricant will drain quickly and more completely. WARNING: Do not change engine lubricant while it is hot. Accidental contact with hot engine lubricant could result in serious burns.  Reinstall the oil drain plug and tighten securely.  Refill with lubricant following the instructions in the ­Checking/Adding Lubricant section. For amount of ­lubricant needed to refill, see Product Specifications ­earlier in this manual or the accompanying engine manual, if applicable. n Replace and secure the oil cap/dipstick. NOTE: Used lubricant should be disposed of at an a­ pproved disposal site. See your local retailer for more information. SPARK PLUG REPLACEMENT See Figure 14. The spark plug must be properly gapped and free of deposits in order to ensure proper engine operation. To check: n Remove the spark plug cap. n Clean any dirt from around base of spark plug. n Remove spark plug using spark plug wrench or socket. n Inspect spark plug for damage, and clean with a wire brush before reinstalling. If insulator is cracked or chipped, spark plug should be replaced. For replacement spark plug, see Product Specifications earlier in this manual or the accompanying engine manual, if applicable. n Measure plug gap. The correct gap is 0.024−0.028 in. (0.60-0.70 mm). To widen gap, if necessary, carefully bend the ground (top) electrode. To lessen gap, gently tap ground electrode on a hard surface. n Seat spark plug in position; thread in by hand to prevent cross-threading. n Tighten with wrench to compress washer. If spark plug is new, use 1/2 turn to compress washer appropriate amount. If reusing old spark plug, use 1/8 to 1/4 turn for proper washer compression. NOTE: An improperly tightened spark plug will become very hot and could damage the engine. n Reintall the spark plug cap. SPARK ARRESTOR See Figure 15. NOTICE: This product is equipped with a spark arrestor that has been evaluated by the USDA Forest Service; however, product users must comply with Federal, State, and local fire prevention regulations. Check with appropriate authorities. Contact customer service or a qualified service center to purchase a replacement spark arrestor. 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. Contact customer service or a qualified service center for the location of the spark arrestor for your model. To clean the spark arrestor:  Loosen the screw on the spark arrestor cap. Remove the cap and spark arrestor.  Use a brush (not provided) to remove carbon deposits from the spark arrestor.  Replace the spark arrestor and cap, tighten screw securely. DRAINING FUEL TANK/CARBURETOR See Figure 16. To help prevent gum deposits in the fuel system, drain the fuel from the tank and carburetor before storing. DRAINING THE FUEL TANK  Place the easy start lever in the OFF position.  Remove the fuel line from the hose barb by squeezing the ends of the retaining clip and sliding the fuel line off. NOTE: Make sure you are removing the fuel line that runs between the fuel valve and the carburetor, NOT the line that runs between the fuel valve and the fuel tank.  Install one end of a drain line (not provided) over the hose barb, and place the other end in a fuel container large enough to catch the fuel being drained from the tank.  Place the easy start lever in the RUN position.  When the fuel has drained from the tank, place the easy start lever in OFF position and reinstall fuel line securely onto the hose barb. DRAINING THE CARBURETOR  Place the easy start lever in the OFF position.  Position a suitable container under the carburetor drain screw to catch fuel; loosen the screw.  Allow fuel to drain completely into container.  Retighten drain screw. NOTE: Consult hazardous waste management guidelines in your area for the proper way to dispose of used fuel. 17 - English