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Фрагмент инструкции
Remove the oil fill plug. Pour the oil out of the oil fill hole and into a container by tipping the unit to a vertical position (Fig. 25). Allow ample time for complete drainage. Wipe up any oil residue on the unit and clean up any oil that may have spilled. Dispose of the oil according to Federal, State and local regulations. Refill the crankcase with 3.04 fluid ounce (90 ml) of SAE 30 SF, SG, SH oil. NOTE: Use the bottle and spout saved from initial use to measure the correct amount of oil. The top of the label on the bottle measures approximately 3.04 ounces (90 ml) (Fig. 26). Check the level; See Checking the Oil Level. If the level is low, add a small amount of oil and recheck. Do not overfill (Fig. 26). -Fig. 26 6. Replace the oil fill plug. 7. Reconnect the spark plug boot. AIR FILTER MAINTENANCE WARNING: To avoid serious personal injury, always turn the unit off and allow it to cool before you clean or service it. Cleaning the Air Filter Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain your air filter properly can result in poor performance or can cause permanent damage to your Air Filter Cover Air Filter Fig. 27 Tab engine. 1. Open the air filter cover. Push the tab on the under side of the cover inward. Then pull the air filter cover out and up. (Fig. 27). Remove the air filter (Fig. 30). Wash the filter in detergent and water (Fig. 28). Rinse the filter thoroughly and allow it to dry. Apply enough clean SAE 30 motor oil to lightly coat the filter (Fig. 29). Squeeze the filter to spread and remove excess oil (Fig. 30). Replace the filter (Fig. 27). NOTE: If the unit is operated without the air filter, you will VOID the warranty. Reinstall the air filter cover. Position the slots on the top of the air filter cover onto the tabs at the top of the back 4. 5. 6. 7. Fig. 29 11 MAINTENANCE AND REPAIR INSTRUCTIONS plate (Fig. 31). A WARNING: The cutting head may spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury. 8. Swing the cover down until the tab on the air filter backplate snaps into place in the slot on the air filter cover (Fig. 32). IDLE SPEED ADJUSTMENT The idle speed of the engine is adjustable. An idle adjustment screw is between the air filter cover and the engine starter housing (Fig. 33). NOTE: Careless adjustments can seriously damage your unit. Aside from the idle speed, only a Sears or other qualified service dealer should make carburetor adjustments. 1. Check Fuel Idle Adjustment Screw Fig. 33 Old fuel is usually the reason for idle speed problems. Drain and WARNING: To prevent serious personal injury, make sure the cutting attachment has stopped rotating before you turn it off and set it down. refill the tank with fresh fuel prior to making any adjustments. Refer to Oil and Fuel Information. 2. Clean Air Filter The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow. This is often mistaken for WARNING: The cutting attachment may spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury. an out of adjustment idle. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance. 3. Adjust Idle Speed Screw If, after checking the fuel and cleaning the air filter, the engine still will not idle, adjust the idle speed screw as follows: 1. Start the engine and let it run at a high idle for a minute to warm up. Refer to Starting/Stopping Instructions. 2. Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips screwdriver in between the Air Filter Cover and the Engine Cover (Fig. 33). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly. NOTE: The cutting head should not rotate when the engine idles. 3. If the cutting attachment rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), until the head stops turning. Checking the fuel, cleaning the air filter, and adjusting the idle speed should solve most engine problems. If not and all of the following are true: • the engine will not idle • the engine hesitates or stalls on acceleration • there is a loss of engine power Have the carburetor serviced by a Sears or other qualified service dealer. ROCKER ARM CLEARANCE This requires disassembly of the engine. If you feel unsure or unqualified to perform this, take the unit to a Sears or other qualified service dealer NOTE: Inspect the valve to rocker arm clearance with a feeler gauge after the first 10 hours of operation and every 25 hours of operation. • The engine must be cold when checking or adjusting the valve View Of The Rear Engine Cover clearance. This ta...