Briggs & Stratton 5119B Tune-Up Kit It includes 4-cycle 30w oil 18 ounce 100005, 4-Cycle 30w oil 48 ounce 100028, Oil filter 492932s, air filter cartridge 394018s, pre-cleaner 272490s Also includes 2 spark plugs 491055s, fuel stabilizer 5041, fuel filter 6910365, 2 hose clamps 95162s and 1 oil drain bag Extends engine life and keeps it running powerfully Reduces costly repairs Protects warranty coverage Unscrew and remove cover (A). Remove air filter cartridge and pre-cleaner (B). Install dry pre-cleaner on filter cartridge (C). Do not oil the pre-cleaner. Install air filter assembly on base, then install cover and screw. Unscrew and remove cover (A). Remove air filter cartridge and pre-cleaner (B). Install dry pre-cleaner on filter cartridge (C). Do not oil the pre-cleaner. Install air filter assembly on base, then install cover and screw. Remove spark plug by disconnecting the spark plug lead and removing the plug using a spark plug socket. Clean any deposits from the plug with a wire brush or spray-on plug cleaner. Inspect the plug for heavy deposits, cracked porcelain, or burned away electrodes.  If any of these exists, replace the spark plug. Use a spark plug gauge to measure the gap between the two electrodes at the tip of your spark plug. (Many small engines require a .030&#034; gap. Check for the specifications for your model) If necessary, use a spark plug gauge to adjust the gap by gently bending the curved electrode. When the gap is correct, the gauge will drag slightly as you pull it through the gap. Reinstall the plug, taking care not to over-tighten (15 ft. lbs. MAXIMUM ). Then, attach the spark plug lead. Remove and retain screw (A) for later reassembly. Remove and discard the original cover (B), filter (C), filter cup (if equipped), base (D), and gasket (E). Install new gasket on carburetor, then install new base. Saturate new filter in clean engine oil, then squeeze to remove excess oil. Place filter in base. Install cover and secure the air filter assembly to the engine with the original screw. Remove and retain screw (A) for later reassembly. Remove and discard the original cover (B), filter (C), filter cup (if equipped), base (D), and gasket (E). Install new gasket on carburetor, then install new base. Saturate new filter in clean engine oil, then squeeze to remove excess oil. Place filter in base. Install cover and secure the air filter assembly to the engine with the original screw. Before starting any maintenance, be sure to consult your Briggs &amp; Stratton operator&#039;s manual and follow all safety precautions. Clean the main fuel jet (located in your carburetor&#039;s fuel bowl nut) with carburetor cleaner and compressed air to blow out loosened debris. After cleaning the carburetor, another key step for some float-type carburetors is adjusting the idle speed and mixture. Before starting any maintenance, be sure to consult your Briggs &amp; Stratton operator&#039;s manual and follow all safety precautions. Clean the main fuel jet (located in your carburetor&#039;s fuel bowl nut) with carburetor cleaner and compressed air to blow out loosened debris. After cleaning the carburetor, another key step for some float-type carburetors is adjusting the idle speed and mixture.