Assessments - 3, GPA: 4.7
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per min.) to prolong starter life. Extended cranking can damage starter motor. STOPPING Fig. 3 Do not move choke control to CHOKE position to stop engine. Backfire or engine damage may occur. Move throttle control . to IDLE or SLOW position, if equipped. Then turn key . to OFF. or move stop control to OFF position. Close fuel shut-off valve . Note: Always remove key from switch when equipment is not in use or left unattended. Note: When engine is transported, close fuel shut-off valve to prevent leakage. MAINTENANCE Fig. 4 WARNING • To prevent accidental starting, remove spark plug wire and ground it before servic- ing,and disconnect battery at negative terminal, if equipped. See Maintenance Schedule. Follow the hourly or calendar intervals, whichever occur first. More frequent service is required when operating in adverse conditions. Oil service Fig. 2 Check oil level regularly. Be sure correct oil level is maintained. Check every 8 hours or daily, before starting engine. See oil filling procedure under Oil Recommendations. Change oil. Change oil after first 5 hours of operation. Change oil while engine is warm. Refill with new oil of recommended SAE viscosity grade. Air cleaner service Fig. 6 Replace pre-cleaner , and/or cartridge . if very dirty or damaged. 1. Loosen screws. Remove cover and air cleaner assembly from base. 2. Remove cartridge retainer , (if equipped) and pre-cleaner. To service pre-cleaner, wash in liquid detergent and water. Squeeze dry in a clean cloth. Saturate in engine oil. Squeeze in clean, absorbent cloth to remove ALL EXCESS oil. To service cartridge, clean by tapping gently on a flat surface. Do not use petroleum solvents, e.g., kerosene, which will cause cartridge to deteriorate. Do not use pressurized air, which can damage cartridge. Do not oil cartridge. 3. Reinstall pre-cleaner on retainer, if equipped. 4. Install pre-cleaner in cover with mesh side toward cartridge. Install cartridge in cover or on base. 5. Seat cover and air cleaner assembly squarely onto base (tabs into slots , if equipped). 6. Tighten cover screws securely. Check valve clearance: intake is .05 mm and exhaust .10 mm. Spark plug service Fig. 5 WARNING • DO NOT check for spark with spark plug removed. Use only Briggs & Stratton Spark Tester , to check for spark. • DO NOT crank engine with spark plug removed. If engine is flooded, place throttle in FAST and crank until engine starts. Spark plug gap should be .76 mm or 0.030 in. Replace spark plug every 100 hours or every season, whichever occurs first. Spark tester and spark plug wrench are available from any Authorized Briggs & Stratton Service Dealer. Note: In some areas, local law requires using a resistor spark plug to suppress ignition signals. If this engine was originally equipped with resistor spark plug, use same type of spark plug for replacement. Keep engine clean Fig. 7 Periodically remove chaff and debris build-up from engine. Do not spray engine with water to clean because water could contaminate fuel. Clean with a brush or compressed air. To assure smooth operation, k...
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