Briggs & Stratton 250000 User Manual

0 (0)

Operating & Maintenance

Instructions

Model Series

Covered in

This Manual

190000

250000

Model

Type

Code

Note: General Model Series numbers noted above are inclusive of the specific model number found on your engine. To get replacement parts or technical assistance in the future, write your engine Model, Type, Code and date of purchase here.

Month Day Year

TABLE OF CONTENTS
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 3-5
Engine Information . . . . . . . . . . . . . . . . . . . . .	. 5-6
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 7
Fuel and Starting Information . . . . . . . . . . . .	. . . 8
Starting and Stopping . . . . . . . . . . . . . . . . . . .	9-10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . .	11-13
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 14
Parts and Service & Storage . . . . . . . . . . . .	15-16
Warranty Information . . . . . . . . . . . . . . . . . . .	. . 17

WARNING

Briggs & Stratton does not approve or authorize the use of these engines on 3-wheel All Terrain Vehicles (ATVs), motor bikes, aircraft products or vehicles intended for use in competitive events. Use of these engines in such applications could result in property damage, serious injury (including paralysis), or even death.

Need assistance? Go to www.briggsandstratton.com for detailed information regarding

Briggs & Stratton engines.

Or call, 1-800-233-3723, (U.S.A. and Canada) to hear a menu of pre-recorded messages offering engine maintenance information.

PRINTED IN U.S.A.

FORM NO. 274786-5/03

The Power That Works For You.

Look For Relevant Emissions Durability Period and Air Index Information

On Your Engine Emissions Label

Engines that are certified to meet the California Air Resources Board (CARB) Tier 2 Emission Standards must display information regarding the Emissions Durability Period and the Air Index. Briggs & Stratton makes this information available to the consumer on our emission labels. The engine emission label will indicate certification information.

The Emissions Durability Period describes the number of hours of actual running time for which the engine is certified to be emissions compliant, assuming proper maintenance in accordance with the Operating & Maintenance Instructions. The following categories are used:

Moderate: Engine is certified to be emission compliant for 125 hours of actual engine running time. Intermediate: Engine is certified to be emission compliant for 250 hours of actual engine running time. Extended: Engine is certified to be emission compliant for 500 hours of actual engine running time.

For example, a typical walk-behind lawn mower is used 20 to 25 hours per year. Therefore, the Emissions Durability Period of an engine with an intermediate rating would equate to 10 to 12 years.

The Air Index is a calculated number describing the relative level of emissions for a specific engine family. The lower the Air Index, the cleaner the engine. This information is displayed in graphical form on the emissions label.

After July 1, 2000, Look For Emissions Compliance Period On

Engine Emissions Compliance Label

After July 1, 2000 certain Briggs & Stratton engines will be certified to meet the United States Environmental Protection Agency (USEPA) Phase 2 emission standards. For Phase 2 certified engines, the Emissions Compliance Period referred to on the Emissions Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal emission requirements. For engines less than 225 cc displacement, Category C = 125 hours, B = 250 hours and A = 500 hours. For engines of 225 cc or more, Category C = 250 hours, B = 500 hours and A = 1000 hours.

The displacement of Model Series 190000 engines is 319 cc. The displacement of Model Series 250000 engines is 400 cc.

This is a generic representation of the emission label typically found on a certified engine.

274786

BEFORE OPERATING ENGINE

•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.

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.

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

Fire	Explosion	Moving Parts

Toxic Fumes

Hot Surface

Shock

Kickback

THE INTERNATIONAL SYMBOLS USED

ON THE ENGINE OR

IN THIS MANUAL INCLUDE:

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

*Briggs & Stratton does not necessarily know what equipment 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.

SAFETY

WARNING

Gasoline and its vapors are extremely

flammable and explosive.

Fire or explosion can cause severe burns

or death.

WHEN ADDING FUEL

•Turn engine OFF and let engine cool at least 2 minutes before removing gas cap.

•Fill fuel tank outdoors or in well-ventilated area.

•Do not overfill fuel tank. Fill tank to approximately 1-1/2 inches below top of neck to allow for fuel expansion.

•Keep gasoline away from sparks, open flames, pilot lights, heat, and other ignition sources.

•Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if necessary.

WHEN STARTING ENGINE

•Make sure spark plug, muffler, fuel cap and air cleaner are in place.

•Do not crank engine with spark plug removed.

•If fuel spills, wait until it evaporates before starting engine.

•If engine floods, set choke to OPEN/RUN position, place throttle in FAST and crank until engine starts.

WHEN OPERATING EQUIPMENT

•Do not tip engine or equipment at angle which causes gasoline to spill.

•Do not choke carburetor to stop engine.

WHEN TRANSPORTING EQUIPMENT

•Transport with fuel tank EMPTY or with fuel shut-off valve OFF.

WHEN STORING GASOLINE OR EQUIPMENT WITH FUEL IN TANK

•Store away from furnaces, stoves, water heaters or other appliances that have pilot light or other ignition source because they can ignite gasoline vapors.

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.

WARNING

Rapid retraction of starter cord (kickback) will

pull hand and arm toward engine faster than

you can let go.

Broken bones, fractures, bruises or sprains

could result.

•When starting engine, pull cord slowly until resistance is felt, then pull rapidly.

•Remove all external equipment/engine loads before starting engine.

•Direct coupled equipment components such as, but not limited to, blades, impellors, pulleys, sprockets, etc., must be securely attached.

WARNING

Rotating parts can contact or entangle hands, feet, hair, clothing, or accessories.

Traumatic amputation or severe laceration can result.

•Operate equipment with guards in place.

•Keep hands and feet away from rotating parts.

•Tie up long hair and remove jewelry.

•Do not wear loose-fitting clothing, dangling drawstrings or items that could become caught.

WARNING

Engines give off carbon monoxide, an

odorless, colorless, poison gas.

Breathing carbon monoxide can cause

nausea, fainting or death.

•Start and run engine outdoors.

•Do not start or run engine in enclosed area, even if doors or windows are open.

WARNING

Running engines produce heat. Engine parts, especially muffler, become extremely hot.

Severe thermal burns can occur on contact.

Combustible debris, such as leaves, grass, brush, etc. can catch fire.

•Allow muffler, engine cylinder and fins to cool before touching.

•Remove accumulated combustibles from muffler area and cylinder area.

•Install and maintain in working order a spark arrester before using equipment on forest-covered, grass-covered, brush-covered unimproved land. The state of California requires this (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal land.

TECHNICAL INFORMATION

POWER RATINGS: The power ratings for an individual engine model are initially developed by starting with SAE (Society of Automotive Engineers) code J1940 (Small Engine Power & Torque Rating Procedure) (Revision 2002-05). Given both the wide array of products on which our engines are placed, and the variety of environmental issues applicable to operating the equipment, it may be that the engine you have purchased will not develop the rated horsepower when used in a piece of power equipment (actual “onsite” power). This difference is due to a variety of factors including, but not limited to, the following: differences in altitude, tempera-

SAFETY

WARNING

Unintentional sparking can result in fire or electric shock.

Unintentional start-up can result in entanglement, traumatic amputation, or laceration.

BEFORE PERFORMING ADJUSTMENTS OR REPAIRS

•Disconnect spark plug wire and keep it away from spark plug.

•Disconnect battery at negative terminal (only engines with electric start).

WHEN TESTING FOR SPARK

•Use approved spark plug tester.

•Do not check for spark with spark plug removed.

ENGINE INFORMATION

ture, barometric pressure, humidity, fuel, engine lubrication, maximum governed engine speed, individual engine to engine variability, design of the particular piece of power equipment, the manner in which the engine is operated, engine run-in to reduce friction and clean out of combustion chambers, adjustments to the valves and carburetor, and other factors. The power ratings may also be adjusted based on comparisons to other similar engines utilized in similar applications, and will therefore not necessarily match the values derived using the foregoing codes.

ENGINE INFORMATION

					7	16
					7
						15	12
							12
			2		8
			2
1.	Rope handle		1		9	14
2.	Blower housing		1
2.	Blower housing						13
3.	Carburetor				10.	Spark plug wire	13
4.	Air cleaner				11.	Extended oil fill/Dipstick (if equipped)
5.	Stop switch (if equipped)				12.	Muffler/(Muffler guard, if equipped)/
6.	Fuel fill				13.	(Spark arrester, if equipped)
7.	Fuel tank				13.	Oil fill plug
8.	OIL GARD (if equipped)				14.	Oil drain plug
9.	Engine	Model	Type	Code	15.	12 V electric starter (if equipped)
		xxxxx	xxxx xx	xxxxxxxx	16.	Fuel shut-off valve
GENERAL INFORMATION						MODEL SERIES 190000
ENGINE MODEL						Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3 in. (76.20 mm)
This is a single cylinder, L-head, air-cooled engine. It is a							3 in. (76.20 mm)

low emissions engine.

In the state of California, the 190000 and 250000 series engines covered in this manual are certified by the California Air Resources Board to meet emissions standards for 125 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.

Stroke . . . . . . . . . . . . . . . . . . . . . . . . . 2-3/4 in. (69.85 mm)

Displacement . . . . . . . . . . . . . . . . 19.44 cu. in. (318.5 cc)

MODEL SERIES 250000

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7/16 in. (87.31 mm)

TUNE-UP SPECIFICATIONS

Armature air gap . . . 0.010 – 0.014 in. (0.25 – 0.36 mm) Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)

Valve clearance with valve springs installed and piston 1/4 in. (6 mm) past top dead center (check when engine is cold). See Repair Manual P/N 270962.

Intake . . . . . . . . . . . . . 0.005 – 0.007 in. (0.13 – 0.18 mm) Exhaust . . . . . . . . . . . 0.007 – 0.009 in. (0.18 – 0.23 mm)

Stroke . . . . . . . . . . . . . . . . . . . . . . . . . 2-5/8 in. (66.68 mm)

Displacement . . . . . . . . . . . . . . . . 24.36 cu. in. (399.3 cc)

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 15°.

+ 14 hidden pages