Briggs & Stratton 30473 NOTE:, Adjust Valve Clearance, Inspect Muffler and Spark Arrester, Clean and inspect the spark arrester as f ll ws:

2. Remove screw (Figure 12) that attaches spark arrester screen muffler. Remove spark arrester screen.

Inspect Muffler and Spark Arrester

Inspect the muffler for cracks, corrosion, or other damage. Remove the spark arrester, if equipped, and inspect for damage or carbon blockage.

	WARNING Exhaust heat/gases could ignite combustibles
		or structures resulting in death, serious
		injury and/or property damage.
		Contact with muffler area could cause
		burns resulting in serious injury.
•	DO NOT touch hot parts and AVOID hot exhaust gases.
•	Allow equipment to cool before touching.
•	DO NOT install the generator closer than 5 feet (1.5m)
	from any combustibles or structures with combustible
	walls having a fire resistance rating of less than 1 hour.
					Figure 12
•	Keep at least minimum distances shown in General
	Location Guidelines to insure for proper generator cooling				3. Inspect screen and obtain a replacement if torn,
	and maintenance clearances.
•	It is a violation of California Public Resource Code,				perforated, or otherwise damaged. DO NOT use a
					defective screen. If screen is not damaged, clean it with
	Section 4442, to use or operate the engine on any forest-
					a brush.
	covered, brush-covered, or grass-covered land unless
	the exhaust system is equipped with a spark arrester, as				4. Reattach screen to muffler. Reattach muffler guard.
	defined in Section 4442, maintained in effective working
	order. Other states or federal jurisdictions may have
	similar laws.
	Contact the original equipment manufac urer, retailer, or				Adjust Valve Clearance
	dealer to obtain a spark arrester designed for the exhaust
					NOTE: Check valve clearance while the engine is cold.
	system installed on this engine.
•	Replacement parts must be the same and installed in the				1. Turn crankshaft counterclockwise until piston is at top
	same position as the original parts.				ead center on the compression stroke. This prevents
		Not			the compression release from holding the valves open.
Clean and inspect the spark arrester as f ll ws:					2. Insert a narrow screwdriver or rod into the spark plug as a
1.	To remove muffler guard, remove ur screws that
					gauge, then slowly turn crankshaft counterclockwise until
	connects guard to generator (Figure 11).				the piston has moved down the bore by 1/4” (6 mm).
			for		3. Using feeler gauge, check valve clearance. Clearance
					should be as listed in Specifications.
					4. If not, adjust jam nut until correct clearance is obtained.
				Reproduction

Figure 11

14 BRIGGSandSTRATTON.COM