Briggs & Stratton 277110TRI, 520000, 580000 ecifications, WARNING, Storage, WARNING, WARNING, Troubleshooting, How To Service The Air Filter - Figure, How To Replace The Fuel Filter - Figure, NOTICE:

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How To Service The Air Filter - Figure			7		4. Tighten the alternator mounting bolts.
					Torque bolt (D) to 14 ft-lbs (19 Nm).
	WARNING				Torque bolt (E) to 45 ft-lbs (61 Nm).
					Storage
	Fuel and its vapors are extremely flammable and explosive.
	Fire or explosion can cause severe burns or death.
						WARNING
•	Never start or run the engine with the air cleaner assembly or the air filter					Fuel and its vapors are extremely flammable and explosive.
	removed.					Fire or explosion can cause severe burns or death.
NOTICE: Do not use pressurized air or solvents to clean the filter. Pressurized air can
damage the filter and solvents will dissolve the filter.					When Storing Fuel Or Equipment With Fuel In Ta k
See the Maintenance Chart for service requirements.
					•	Store away from furnaces, stoves, water heaters or other applia ces that have
1.	Open the latches (A) and remove the cover (B). See Figure 7.
						pilot lights or other ignition sources because they can ig ite fuel vapors.
2.	Remove the air filter (C).
3.	To loosen debris, gently tap the air filter on a hard surface. If the air filter is				Fuel System
	excessively dirty, replace with a new air filter.
4.	Install the air filter.				Draining the fuel tank is not recommended for s		rage. Instead, fill the fuel tank to
5.	Install the cover and close the latches.				prevent condensation, then add a iesel fuel m cro-b				c de additive to prevent bacteria
					and fungi from growing in the tank. Run he eng ne f				r several minutes to circulate the
					additive through the system.
How To Replace The Fuel Filter - Figure 8					Engine Oil
					While the engine is still warm, hange he engine oil.
	WARNING
	Fuel and its vapors are extremely flammable and explosive.
	Fire or explosion can cause severe burns or death.				Troubleshooting
					Need Assistance? Go to BRIGGSandSTRATTON.COM or call 1-800-233-3723.
• Disconnect battery at negative terminal (only engines with electric start.)
• Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition
	sources.
• Check fuel lines, tank, cap, and fittings frequently for cracks or leaks.					S	ecifications
	Replace if necessary.
•	Before replacing the fuel filter, drain the fuel tank or close the fuel shut-off valve.
•	Replacement parts must be the same and installed in the same position as the
					Engine Specifications
	original parts.
					Model		520000
• If fuel spills, wait until it evaporates before starting engine.
					Dis	lacement		51.87 ci (850 cc)
If the fuel filter warning light illuminates while the engine is running, stop the ngine and
					Bore			2.677 in (68 mm)
drain water from fuel filter as follows:					Stroke			3.071 in (78 mm)
Replace fuel filter
					Oil Capacity			3.5 qt (3.3 L)
1.	Disconnect the sensor wire (D).
2.	Remove the drain plug (B) and discard the O-ring (E).
					Engine Specifications
3.	Remove the fuel filter (A) with a filter wrench.
					Model		580000
4.	Install a new fuel filter by hand until gasket (F) contacts the housing. Then tighten an
	additional 1/3 turn.				Displacement			58.09 ci (953 cc)
5.	Install the drain plug with new O-ring.			Reproduction
					Bore			2.835 in (72 mm)
6.	Connect the sensor wire.
					Stroke			3.071 in (78 mm)
7.	Activate the primer pump (C) until resistance is		elt.
					Oil Capacity			3.5 qt (3.3 L)
8.	Start the engine and check for leaks.
Drain water from fuel fil er
					Tune-up Specifications *
1.	Stop the engine.
					Model		520000, 580000
2.	Place a drain pan under	he fuel fil er (A) and loosen drain plug (B) approximately
	one turn.				Intake Valve Clearance Y			0.008 in (0.2 mm)
3.	Water should drain fr m	he fuel fil er. If necessary, operate the primer pump (C) to			Exhaust Valve Clearance Y			0.008 in (0.2 mm)
	drain water, but nly until fuel fl ws from the fuel filter.
4.	Tighten the drain plug.				* Engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level and
5.	Start the engine. Make sure that the warning light is off. Check for leaks.				1% for each 10° F (5.6° C) above 77° F (25° C). The engine will operate satisfactorily at
					an angle up to 15°. Refer to the equipment operator’s manual for safe allowable
How To Check/Adjust The Fan Belt - Figure 9					operating limits on slopes.
					Y Check when engine is cold.
Check Fan Belt
					Common Service Parts n
1.	Check the condition of the fan belt (A, Figure 9). If the fan belt has cracks or is
	damaged, replace with a new belt.				Service Part			Part Number
2.	Check the tension of the fan belt. Press on the center (C) of the fan belt. If tension is				Air Filter		820263
	correct, the belt will move 3/8 -- 1/2 in (10 -- 12 mm) if 22 lbs (10 kg) of force is
					Oil Filter		820314
	applied to the center of the belt. If the tension is too loose, adjust as follows.
Adjust Fan Belt Tension					Fuel Filter		820311
1.	Loosen the alternator mounting bolts (D) and (E). See Figure 9.				V-Belt (940 mm)		821075
2.	Position a pry bar (F) against the alternator (G) and the side of the engine block. To				V-Belt (970 mm)			820893
	tighten the fan belt, pull on the pry bar. Temporarily tighten the alternator mounting
	bolts.				n We recommend that you see any Briggs & Stratton 3/LC Authorized Dealer for all
3.	Check the tension of the fan belt. See Check Fan Belt section. If necessary, repeat				maintenance and service of the engine and engine parts. Use only genuine Briggs &
	the procedure.				Stratton parts.

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