Engine and Engine Parts, Muffler | Briggs & Stratton 440000, 400000

MAINTENANCE

ENGINE AND ENGINE PARTS

We recommend that you see an authorized Briggs & Stratton Service Dealer for all maintenance and service of the engine and engine parts. Use only genuine Briggs & Stratton parts.

WARNING

If you perform any maintenance on the engine, first disconnect the spark plug wires from the spark plugs, and disconnect the battery at the negative terminal (electric starter engines only) to prevent unintentional sparking. Unintentional sparking can result in fire or electric shock. Unintentional start-up can result in entanglement, traumatic amputation or laceration. Use only correct tools.

•Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation.

•Do not tamper with governor spring, links or other parts to increase engine speed.

MUFFLER

AIR COOLING SYSTEM

WARNING	Replacement parts		for the
	muffler must be the same and
	installed in the same position

	as the original parts, other-
	wise fire can occur.
	If muffler is equipped with spark
	arrestor	screen,	remove

screen for inspection. Replace screen if damaged or plugged.

FUEL SYSTEM

	Replacement	parts for fuel
WARNING	Replacement	parts for fuel
WARNING	system (cap,	hoses, tanks,
	filters, etc.) must be the same
	filters, etc.) must be the same
	as original parts, otherwise
	fire can occur.

Debris may clog the engine’s air cooling system. Remove blower housing and clean area shown to prevent overheat- ing and engine damage.

	CLEAN AREAS UNDER
AIR CLEANER	BLOWER HOUSING
KNOBS	OF ALL DEBRIS
	CARBURETOR
	AIR INTAKE
	SCREWS

FUEL FILTER (if equipped)

FILTER

SPARK PLUG

Use only Briggs & Stratton Spark Tester (part number 19368) to check for spark.

Note: In some areas, local	.030” (0.76 mm)
law requires using resistor	WIRE GAGE
spark plug to suppress igni-
tion signals. If this engine

WARNING

[1]Disconnect spark plug wires and keep away from spark plugs.

[2]Drain fuel tank or close fuel shut-off valve before replacing fuel filter. Otherwise, fuel can leak out, creating a fire/explo- sion hazard.

was originally equipped with

resistor spark plug, use

same type for replacement.

VALVE CLEARANCE

Check valve clearance yearly. (See Tune-up Specifications on page 6).