Briggs & Stratton Snow Series, Snow 90000 Manual

Operator Safety

SAFETY AND CONTROL SYMBOLS

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, could result in minor or moderate injury.

NOTICE indicates a situation that could result in damage to the product.

Certain components in this product and its related accessories contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands after handling.

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

Briggs & Stratton does not approve or authorize the use of these engines on 3-wheel All Terrain Vehicles (ATVs), motor bikes, fun/recreational go-karts, 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.

NOTICE: This engine was shipped from Briggs & Stratton without oil. Before you start the engine, make sure you add oil according to the instructions in this manual. If you start the engine without oil, it will be damaged beyond repair and will not be covered under warranty.

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 the fuel cap.
• Fill fuel tank outdoors or in well-ventilated area.
• Do not overfill fuel tank. To allow for expansion of the gasoline, do not fill above the bottom of the fuel tank neck.
• 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
• If fuel spills, wait until it evaporates before starting engine.

When Starting Engine

• Ensure that spark plug, muffler, fuel cap and air cleaner (if equipped) are in place and secured.
• Do not crank engine with spark plug removed.
• If engine floods, set choke (if equipped) to OPEN/RUN position, move throttle (if equipped) to FAST position and crank until engine starts.

When Operating Equipment

• Do not tip engine or equipment at angle which causes gasoline to spill.
• Do not choke the carburetor to stop engine.
• Never start or run the engine with the air cleaner assembly (if equipped) or the air filter (if equipped) removed.

When Changing Oil

• If you drain the oil from the top oil fill tube, the fuel tank must be empty or fuel can leak out and result in a fire or explosion.

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.

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.

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.

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 the starter cord slowly until resistance is felt and then pull rapidly to avoid kickback.
• Remove all external equipment/engine loads before starting engine.
• Direct-coupled equipment components such as, but not limited to, blades, impellers, pulleys, sprockets, etc., must be securely attached.

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.

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 debris from muffler area and cylinder area.
• It is a violation of California Public Resource Code, Section 4442, to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the exhaust system is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order. Other states or federal jurisdictions may have similar laws. Contact the original equipment manufacturer, retailer, or dealer to obtain a spark arrester designed for the exhaust system installed on this engine.

Unintentional sparking can result in fire or electric shock.
Unintentional start-up can result in entanglement, traumatic amputation, or laceration.
Fire hazard

Before performing adjustments or repairs:

• Disconnect the spark plug wire and keep it away from the spark plug.
• Disconnect battery at negative terminal (only engines with electric start.)
• Use only correct tools.
• Do not tamper with governor spring, links or other parts to increase engine speed.
• Replacement parts must be the same and installed in the same position as the original parts.
• Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation.

When testing for spark:

• Use approved spark plug tester.
• Do not check for spark with spark plug removed.

General Information

For replacement parts or technical assistance, record the engine model, type, and code numbers along with the date of purchase. These numbers are located on your engine (see the Features and Controls).

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). Torque values are derived at 3060 RPM; horsepower values are derived at 3600 RPM. 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 power). 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.

Features and Controls

Compare the illustration with your engine to familiarize yourself with the location of various features and controls.

1. Engine Identification
   Model Type Code
2. Spark Plug
3. Choke Control
4. Starter Cord Handle
5. Oil Fill Cap
6. Dipstick/Oil Fill
7. Oil Drain Plug
8. Muffler
   Muffler Guard (optional)
   Muffler Deflector
9. Push Button Electric Start
10. Power Cord Receptacle
11. Electric Starter
12. Carburetor

Operation

Oil capacity (see the Specifications section)

Oil Recommendations

We recommend the use of Briggs & Stratton Warranty Certified oils for best performance. Other high-quality detergent oils are acceptable if classified for service SF, SG, SH, SJ or higher. Do not use special additives.
Outdoor temperatures determine the proper oil viscosity for the engine. Use the chart to select the best viscosity for the outdoor temperature range expected.

* Below 40°F (4°C) the use of SAE 30 will result in hard starting.
** Above 80°F (27°C) the use of 10W-30 may cause increased oil consumption. Check oil level more frequently.

How To Check/Add Oil

Before adding or checking the oil

• Place engine level.
• Clean the oil fill area of any debris.

Models with oil fill cap (Figure 2)

1. Remove the oil fill cap (A).
2. To add oil, pour the oil slowly into the engine oil fill (B). Fill to point of overflowing.
3. Replace and tighten the oil fill cap.

Models with extended dipstick (Figure 3)

1. Remove the dipstick (C) and wipe with a clean cloth.
2. Insert and tighten the dipstick.
3. Remove the dipstick and check the oil level. It should be at the top of the full indicator (D) on the dipstick.
4. To add oil, pour the oil slowly into the engine oil fill (B). Do not overfill. After adding oil, wait one minute and then recheck the oil level.
5. Replace and tighten the dipstick.

Fuel Recommendations

Fuel must meet these requirements:

• Clean, fresh, unleaded gasoline.
• A minimum of 87 octane/87 AKI (91 RON). High altitude use, see below.
• Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE (methyl tertiary butyl ether) is acceptable.

Do not use unapproved gasolines, such as E85. Do not mix oil in gasoline or modify the engine to run on alternate fuels. This will damage the engine components and void the engine warranty.

To protect the fuel system from gum formation, mix a fuel stabilizer into the fuel. See Storage. All fuel is not the same. If starting or performance problems occur, change fuel providers or change brands. This engine is certified to operate on gasoline. The emissions control system for this engine is EM (Engine Modifications).

High Altitude

At altitudes over 5,000 feet (1524 meters), a minimum 85 octane/85 AKI (89 RON) gasoline is acceptable. To remain emissions compliant, high altitude adjustment is required. Operation without this adjustment will cause decreased performance, increased fuel consumption, and increased emissions. See a Briggs & Stratton Authorized Dealer for high altitude adjustment information.
Operation of the engine at altitudes below 2,500 feet (762 meters) with the high altitude kit is not recommended.

How To Add Fuel

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 the fuel cap.
• Fill fuel tank outdoors or in well-ventilated area.
• Do not overfill fuel tank. To allow for expansion of the gasoline, do not fill above the bottom of the fuel tank neck.
• 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
• If fuel spills, wait until it evaporates before starting engine.

1. Clean the fuel cap area of dirt and debris. Remove the fuel cap (A) (Figure 4).
   
2. Fill the fuel tank (B) with gasoline. To allow for expansion of the gasoline, do not fill above the bottom of the fuel tank neck (C).
3. Reinstall the fuel cap.

How To Start The Unit

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 the starter cord slowly until resistance is felt and then pull rapidly to avoid kickback.
• Remove all external equipment/engine loads before starting engine.
• Direct-coupled equipment components such as, but not limited to, blades, impellers, pulleys, sprockets, etc., must be securely attached.

Gasoline and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.

When Starting Engine

• Ensure that spark plug, muffler, fuel cap and air cleaner (if equipped) are in place and secured.
• Do not crank engine with spark plug removed.
• If engine floods, set choke (if equipped) to OPEN/RUN position, move throttle (if equipped) to FAST position and crank until engine starts.

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.

Unintentional sparking can result in fire or electric shock.
Unintentional start-up can result in entanglement, traumatic amputation, or laceration.
Fire hazard

• Use a 3-wire extension cord.
• First attach extension cord to electric starter connector and then into a wall receptacle. If additional extension cord is required, use a 3-wire.
• If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard.

NOTICE: This engine was shipped from Briggs & Stratton without oil. Before you start the engine, make sure you add oil according to the instructions in this manual. If you start the engine without oil, it will be damaged beyond repair and will not be covered under warranty.
Note: Some engines and equipment have remote controls. See the equipment manual for location and operation of remote controls.

1. Check the oil level. See the How To Check/Add Oil section.
2. Make sure equipment drive controls, if equipped, are disengaged.
3. Turn the fuel shut-off valve, if equipped, to the on position.
4. Turn on the equipment switch (either a rocker (A) or a key (B) switch). See Figure 5.
   
5. Turn the choke control (C) to the choke position.
   Note: Choke is usually unnecessary when restarting a warm engine.
6. Push the primer (D) two times.
   Note: Priming is usually unnecessary when restarting a warm engine.
7. Rewind Start: Firmly hold the starter cord handle (E). Pull the starter cord handle slowly until resistance is felt, then pull rapidly.
   Note: If the engine does not start after repeated attempts, go to BRIGGSandSTRATTON.COM or call 1-800-233-3723 (in USA).

Rapid retraction of the starter cord (kickback) will pull your hand and arm toward the engine faster than you can let go. Broken bones, fractures, bruises or sprains could result. When starting engine, pull the starter cord slowly until resistance is felt and then pull rapidly to avoid kickback.

8. Electric Start: First connect the extension cord to the power cord receptacle (F, Figure 6) and then into a wall receptacle. If an additional extension cord is required, make sure it is a 3-wire.
   

If the extension cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard.

9. Electric Start: Depress the push button (G). After the engine starts, first disconnect the extension cord from the wall receptacle and then from the power cord receptacle (F).
   Note: If the engine does not start after repeated attempts, go to BRIGGSandSTRATTON.COM or call 1-800-233-3723 (in USA).
   NOTICE: To extend the life of the starter, use short starting cycles (five seconds maximum). Wait one minute between starting cycles.
10. Allow the engine to warm up for several minutes. Then, slowly move the choke control to the run position.

How To Stop The Unit

Gasoline and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.

• Do not choke the carburetor to stop engine.

1. Turn off the equipment switch (either a rocker (A) or a key (B) switch). See Figure 5.
2. After the engine stops, turn the fuel shut-off valve, if equipped, to the closed position.

Maintenance

Use only original equipment replacement parts. Other parts may not perform as well, may damage the unit, and may result in injury. In addition, use of other parts may void your warranty.
We recommend that you see any Briggs & Stratton Authorized Dealer for all maintenance and service of the engine and engine parts.
NOTICE: All the components used to build this engine must remain in place for proper operation.

Emissions Control

Maintenance, replacement, or repair of the emissions control devices and systems may be performed by any non-road engine repair establishment or individual.
However, to obtain "no charge" emissions control service, the work must be performed by a factory authorized dealer. See the Emissions Warranty.

Unintentional sparking can result in fire or electric shock. Unintentional start-up can result in entanglement, traumatic amputation, or laceration.
Fire hazard

Before performing adjustments or repairs:

• Disconnect the spark plug wire and keep it away from the spark plug.
• Use only correct tools.
• Do not tamper with governor spring, links or other parts to increase engine speed.
• Replacement parts must be the same and installed in the same position as the original parts.
• Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation.

When testing for spark:

• Use approved spark plug tester.
• Do not check for spark with spark plug removed.

Maintenance Chart

First 5 Hours

• Change oil

Every 8 Hours or Daily

• Check engine oil level

Every 50 Hours or Annually

• Change engine oil
• Check muffler and muffler guard

Annually

• Replace spark plug
• Replace fuel filter (if equipped)
• Check valve clearance **

** Not required unless engine performance problems are noted.

Carburetor Adjustment

Never make adjustments to the carburetor. The carburetor was set at the factory to operate efficiently under most conditions. However, if adjustments are required, see any Briggs & Stratton Authorized Dealer for service.
NOTICE: The manufacturer of the equipment on which this engine is installed specifies the top speed at which the engine will be operated. Do not exceed this speed.

How To Replace The Spark Plug

Check the gap (A, Figure 7) with a wire gauge (B). If necessary, reset the gap. Install and tighten the spark plug to the recommended torque. For gap setting or torque, see the Specifications section.
Note: In some areas, local law requires using a resistor spark plug to suppress ignition signals. If this engine was originally equipped with a resistor spark plug, use the same type for replacement.

Inspect Muffler And Spark Arrester

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 debris from muffler area and cylinder area.
• It is a violation of California Public Resource Code, Section 4442, to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the exhaust system is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order. Other states or federal jurisdictions may have similar laws. Contact the original equipment manufacturer, retailer, or dealer to obtain a spark arrester designed for the exhaust system installed on this engine.

Inspect the muffler (A, Figure 8) for cracks, corrosion, or other damage. Remove the muffler deflector (B), if equipped, and inspect for damage or carbon blockage. If replacement parts are required, make sure to use only original equipment replacement parts.

Replacement parts must be the same and installed in the same position as the original parts or fire could result.

Air Filter

This engine is not equipped with an air filter. DO NOT use this engine for anything other than snow removal.

How To Change The Oil

Used oil is a hazardous waste product and must be disposed of properly. Do not discard with household waste. Check with your local authorities, service center, or dealer for safe disposal/recycling facilities.

Remove Oil

1. With engine off but still warm, disconnect the spark plug wire (A, Figure 9) and keep it away from the spark plug.
   
2. Remove the oil drain plug (E, Figure 2). Drain the oil into an approved receptacle.
   Note: Any of the oil drain plugs (F) shown may be installed in the engine.
3. After the oil has drained, install and tighten the oil drain plug.

Add oil

• Place engine level.
• Clean the oil fill area of any debris.
• See the Specifications section for oil capacity.

Models with oil fill cap

1. Remove the oil fill cap (A, Figure 2).
2. Pour the oil slowly into the engine oil fill (B). Fill to point of overflowing.
3. Replace and tighten the oil fill cap.

Models with extended dipstick

1. Remove the dipstick (C, Figure 3) and wipe with a clean cloth.
2. Pour the oil slowly into the engine oil fill (B). Do not overfill. After adding oil, wait one minute and then recheck the oil level.
3. Install and tighten the dipstick.
4. Remove the dipstick and check the oil level. It should be at the top of the full indicator (D) on the dipstick.
5. Install and tighten the dipstick.

Storage

Gasoline and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.

When Storing Gasoline Or Equipment With Fuel In Tank

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

Fuel System
Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum deposits to form in the fuel system or on essential carburetor parts. To keep fuel fresh, use Briggs & Stratton FRESH START ® fuel stabilizer, available as a liquid additive or a drip concentrate cartridge.
There is no need to drain gasoline from the engine if a fuel stabilizer is added according to instructions. Run the engine for 2 minutes to circulate the stabilizer throughout the fuel system. The engine and fuel can then be stored up to 24 months.
If gasoline in the engine has not been treated with a fuel stabilizer, it must be drained into an approved container. Run the engine until it stops from lack of fuel. The use of a fuel stabilizer in the storage container is recommended to maintain freshness.

Engine Oil
While the engine is still warm, change the engine oil.

Troubleshooting

Need Assistance? Go to BRIGGSandSTRATTON.COM or call 1-800-233-3723.

Specifications

Engine Specifications
Model	90000
Displacement	9.02 ci (148 cc)
Bore	2.562 in (65.08 mm)
Stroke	1.750 in (44.45 mm)
Oil Capacity	18 -- 20 oz (0.54 -- 0.59 L)
Tune-up Specifications *
Model	90000
Spark Plug Gap	0.030 in (0.76 mm)
Spark Plug Torque	180 lb-in (20 Nm)
Armature Air Gap	0.006 - 0.010 in (0.15 - 0.25 mm)
Intake Valve Clearance	0.005 - 0.007 in (0.13 - 0.18 mm)
Exhaust Valve Clearance	0.007 - 0.009 in (0.18 - 0.23 mm)
* Engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level and 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 operating limits on slopes.
Common Service Parts
Service Part	Part Number
Fuel Additive	5041, 5058
Resistor Spark Plug	802592
Long Life Platinum Spark Plug	5062
Spark Plug Wrench	89838, 5023
Spark Tester	19368

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

LIMITED WARRANTY

For warranty service, find the nearest Authorized Service Dealer in our dealer locator map at BRIGGSandSTRATTON.COM, or by calling 1-800-233-3723, or as listed in the 'Yellow Pages'.

If you have any questions regarding your warranty rights and responsibilities, you should contact B&S at (414) 259-5262.

Briggs & Stratton Corporation,
Milwaukee, WI, USA.
BRIGGSandSTRATTON.COM

Documents / Resources

References

• Lawn Mower Engines | Outdoor Power Equipment | Backup Power Solutions | Briggs & Stratton

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