Briggs & Stratton 540000, 610000 ENGINE COMPONENTS, GENERAL INFORMATION, TECHNICAL INFORMATION, TUNE-UPSPECIFICATIONS, SAFETY SPECIFICATIONS

Note: (This note applies only to engines used in the U.S.A.) Maintenance, replacement or repair of the emission control devices and systems may be performed	GB
by any nonroad engine repair establishment or individual. However, to obtain no charge repairs under the terms and provisions of the Briggs & Stratton
warranty statement, any service or emission control part repair or replacement must be performed by a factory authorized dealer.

ENGINE COMPONENTS

Fig. 1

1Choke Control (if equipped)2Breather/Breather tube3Spark Plug (2 locations)4Engine Model LabelModel xxxxxx Type xxxxxx Code xxxxxxxx5Oil Pressure Sensor6Oil Filter7Oil Drain Plug (2 locations)8Rotating Screen9Cover − Carburetor

10	Carburetor or LPG/NG Mixer
11	Mechanical Fuel Pump
12	Air Cleaner
13	Oil Fill
14	Dipstick
15	Regulator/Rectifier
16	Starter Solenoid
17	Starter
18	Exhaust System/Muffler

GENERAL INFORMATION

This is a twin cylinder, overhead valve (OHV), air-cooled engine. It is a low emissions engine.

In the state of California, Model 540000 and 610000 engines are certified by the California Air Resources Board to meet emissions standards for 1000 hours. Such certification does not grant the purchaser, owner or operator of this engine any additional warranties with respect to the performance or operational life of this engine. This engine is warranted solely according to the product and emissions warranties stated elsewhere in this manual.

Model 540000

Bore . . . . . . . . . . . . . . . . . . . . . . . 85.5 mm (3.36 in.) Stroke . . . . . . . . . . . . . . . . . . . . . . . 78 mm (3.07 in.) Displacement . . . . . . . . . . . . . . . 895 cc (54.6 cu. in.)

Model 610000

Bore . . . . . . . . . . . . . . . . . . . . . . . 85.5 mm (3.36 in.) Stroke . . . . . . . . . . . . . . . . . . . . . 86.5 mm (3.04 in.) Displacement . . . . . . . . . . . . . . . 993 cc (60.6 cu. in.)

Note: For practical operation, the horsepower loading should not exceed 85% of rated horsepower. Engine power will decrease 3-1/2% for each 1,000 feet (300 meters) above sea level and 1% for each 10° F (5.6° C) above 77° F (25° C). Engine will operate satisfactorily at an angle up to 25°.

The safety alert symbol () is used to identify safety information about hazards that can result in personal injury.

A signal word (DANGER, WARNING, or CAUTION) is used with the alert symbol to indicate the likelihood and the potential severity of injury. In addition, a hazard symbol may be used to represent the type of hazard.

DANGER indicates a hazard which, if not avoided, will result in death or serious injury.

WARNING indicates a hazard which, if not avoided, could result in death or serious injury.

CAUTION indicates a hazard which, if not avoided, might result in minor or moderate injury.

CAUTION, when used without the alert symbol,indicates a situation that could result in damage to the engine.

WARNING

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Hazard Symbols and Meanings

19 Throttle control (2 locations)

Record your engine Model, Type and Code numbers here for future use.Record your date of purchase here for future use.

TECHNICAL INFORMATION

Engine Power Rating Information

The gross power rating for individual gas engine models is labeled in accordance with SAE (Society of Automotive Engineers) code J1940 (Small Engine Power & Torque Rating Procedure), and rating performance has been obtained and corrected in accordance with SAE J1995 (Revision 2002-05). Actual gross engine power will be lower and is affected by, among other things, ambient operating conditions and engine-to-engine variability. Given both the wide array of products on which engines are placed and the variety of environmental issues applicable to operating the equipment, the gas engine will not develop the rated gross power when used in a given piece of power equipment (actual on-site" or net horsepower). This difference is due to a variety of factors including, but not limited to, accessories (air cleaner, exhaust, charging, cooling, carburetor, fuel pump, etc.), application limitations, ambient operating conditions (temperature, humidity, altitude), and engine-to- engine variability. Due to manufacturing and capacity limitations, Briggs & Stratton may substitute an engine of higher rated power for this Series engine.

TUNE-UP SPECIFICATIONS

Armature air gap . . . 0.13 − 0.20 mm (0.005 − 0.008 in.) Spark plug gap . . . . . . . . . . . . . . . 0.76 mm (0.030 in.) Valve clearance with valve springs installed and piston 6 mm (1/4 in.) past top dead center (check when engine is cold). Intake . . . . . . . . . . . 0.10 − 0.15 mm (0.004 − 0.006 in.) Exhaust . . . . . . . . . 0.10 − 0.15 mm (0.004 − 0.006 in.)

SAFETY SPECIFICATIONS

BEFORE OPERATINGENGINE

•Read entire Operating & Maintenance Instructions AND the instructions for the equipment this engine powers.*

•Failure to follow instructions could result in serious injury or death.

* Briggs & Stratton does not necessarily know what equip- ment this engine will power. For that reason, you should carefully read and understand the operating instructions for the equipment on which your engine is placed.

THE OPERATING & MAINTENANCE INSTRUCTIONS CONTAIN SAFETY INFORMATION TO:

•Make you aware of hazards associated with engines

•Inform you of the risk of injury associated with those hazards, and

•Tell you how to avoid or reduce the risk of injury.

Fire	Explosion	Moving Parts
Toxic Fumes	Hot Surface	Kickback
Wear Eye Protection	Shock	Frostbite
		Frostbite

International Hazard Symbols and Meanings

Safety Alert	Read Operator’s			On Off
		Manual
Oil	Choke	Stop	Fuel	Fuel Shutoff

WARNING

Starting engine creates sparking.Sparking can ignite nearby flammable gases.Explosion and fire could result.•If there is natural or LP gas leakage in area, do not start engine.•Do not use pressurized starting fluids because vapors are flammable.