Engine and Engine Parts, Muffler | Briggs & Stratton 407700, 406700

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
WARNING	muffler must be the same and
	installed in the same position
	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.

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

FUEL SYSTEM

WARNING

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

CARBURETOR

AIR INTAKE

SCREWS

FUEL FILTER (if equipped)

FILTER

SPARK PLUG

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

PART NO. 493629

Note: In some areas, local law requires using resistor

.030” (0.76 mm)

WIRE GAGE

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.

spark plug to suppress igni- tion signals. If this engine was originally equipped with resistor spark plug, use same type for replacement.

RESISTOR P/N 491055

Otherwise, fuel can leak

out, creating a fire/explo-

sion hazard.

VALVE CLEARANCE

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