Service 5. Install spark plug. Reinstalling used plug: Tighten 1/8 - 1/4 turn after spark plug seats to compress washer. Installing new plug: Use NGK BPR6ES ADJUSTING RPM 1. Start engine. Allow it to warm to normal operating temperature. 2. Move throttle lever to its minimum position. 3. With engine idling, turn throttle stop screw (A) to obtain standard idle speed. A NOTE: Standard idle speed is 1250 - 1550 RPM. NOTE: Idle should be serviced every 300 hours by an authorized dealer. Operator should adjust only if mechanically proficient and using proper tools. CLEANING SEDIMENT CUP CAUTION:
CLEAN SEDIMENT CUP IN A WELL VENTILATED AREA, AWAY FROM SPARKS OR FLAME, INCLUDING ANY APPLIANCE WITH A PILOT LIGHT. DO NOT USE GASOLINE OR A LOW FLASH-POINT SOLVENT TO CLEAN THE FUEL VALVE. A FIRE OR EXPLOSION COULD RESULT. 1. Turn fuel valve (A) to left as illustrated to shut off the fuel flow. NOTE:Clean sediment cup after every 100 hours of use. 2. Remove cap screw (B) with a 10mm wrench. Remove sediment cup (C) and o-ring. 3. Remove any sediment or other foreign matter and wash in nonflammable or high flash point solvent. Dry thoroughly. A 4. Install o-ring and sediment cup with cap screw. C 5. Turn fuel valve right to “ON” position and check for fuel leaks.
B Centrifugal Pump Operator's Manual 15