Operator’s Manual Model 90000 Classic 450 Series Sprint 475 Series Quattro 475 Series Model 100000 Sprint 500 Series Quattro 500 Series LX 500 Series SQ 500 Series Q 500/550 Series Quick Start Guide on page 4 BRIGGSandSTRATTON.com ECopyright Briggs & Stratton Corporation Milwaukee, Wisconsin 53201 U.S.A. Form No. 277038-9/06 Printed in U.S.A.
Safety References 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.
Know Your Engine Starter Handle Air Cleaner Governor Control Lever (if equipped) Fuel Fill Spark Plug Wire Carburetor Primer Bulb Oil Fill/Dipstick Engine Model Type XXXXX XXXX XX Code XXXXXXXX Muffler/Muffler Guard (if equipped)/Spark Arrester (if equipped) Oil Drain Plug 3
This manual contains safety information to make you aware of the hazards and risks associated with engines. Read the Operating Manual before starting your engine. 1 3 2 4 ADD OIL WHAT KIND ? High quality SAE 30 detergent oil rated SF, SG, SH or higher. HOW MUCH ? To FULL line on dipstick. Engine holds about 18 oz. HOW ? Unscrew and remove oil cap. Pour in oil. Replace cap. SPECIAL CONCERNS ? FULL Do not overfill. Do not tip enigine. See page 9 for details. 1 2 3 WIPE DIPSTICK.
1 2 3 4 PUSH PRIMER HOW MANY TIMES ? Press 5 times the FIRST TIME you start engine. For all future starts, press 3 times. HOW ? Locate primer bulb. Press with finger. Wait two seconds between each press. SPECIAL CONCERNS ? Pressing primer too many times can flood engine with gas. A flooded engine will not start. See Troubleshooting section. 1 2 3 4 PULL STARTER HANDLE HOW ? Stand behind equipment. Close bail, or operator control bar, on equipment with this feature.
Troubleshooting Starter handle will not pull. r The proper equipment handle is not engaged which releases the brake from the flywheel allowing the engine to turn over. r Place equipment on flat level surface. WARNING • Ensure all external equipment/engine loads are removed before starting engine. Direct coupled equipment components must be securely attached such as, but not limited to, blades, impellers, pulleys, sprockets, etc. Engine will not start. r Oil Level is OVER FULL mark on dipstick.
Starting [1] Check oil level. Ensure level is at FULL mark on dipstick. Use the correct oil type for expected starting temperature. WARNING • • • • Make sure spark plug, muffler, fuel cap and air cleaner are in place. Do not crank engine with spark plug removed. DO NOT start engine if there is a natural or LP gas leak in area. Do not use pressurized starting fluids because vapors are flammable. WARNING [2] Fill with fresh gasoline. Move throttle to FAST.
Operating WARNING WARNING Engines give off carbon monoxide, an odorless, colorless, poison gas. Running engines produce heat. Engine parts, especially muffler, become extremely hot. Breathing carbon monoxide can cause nausea, fainting or death. After engine has started, let it warm up several seconds to several minutes, depending on outside temperature. For maximum performance and life, operate engine with throttle in FAST. Severe thermal burns can occur on contact.
Oil Oil Capacity Oil Recommendation The engine holds approximately 18 oz. or 0.5 liter. • Use a high quality detergent oil classified “For Service SF, SG, SH, SJ” or higher, such as Briggs & Stratton SAE 30. • Do not use special additives. • Choose a viscosity according to the table opposite. Note: Synthetic oil meeting ILSAC GF-2, API certification mark and API service symbol (shown at left) with “SJ/CF ENERGY CONSERVING” or higher, is an acceptable oil at all temperatures.
Changing Oil Change oil after first 5 to 8 hours of use, then every 50 hours or every season. Change oil every 25 hours when operating the engine under heavy load or in high temperatures. [1] Run engine until it runs out of fuel. Otherwise, fuel can leak out, creating a fire/explosion hazard, when you tip engine in Step 4. [2] Disconnect spark plug wire and keep it away from spark plug. [3] With engine OFF but still warm remove dipstick. [4] Top oil drain, keep spark plug side up.
Fuel Type of Fuel to Use CAUTION • Use clean, fresh, regular unleaded gasoline with a minimum of 85 octane. Fresh fuel prevents gum from forming in the fuel system or on essential carburetor parts. Purchase fuel in quantity that can be used within 30 days. • Do not use gasoline which contains Methanol. • Do not mix oil with gasoline. • For engine protection use Briggs & Stratton Gasoline Additive available from your Authorized Briggs & Stratton Dealer.
Specifications Technical Information 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. Engine Power Rating Information This is a single cylinder, L-head, air-cooled engine. It is a low emissions engine. In the state of California, model 90000 / 100000 engines covered in this manual are certified by the California Air Resources Board to meet emissions standards for 125 hours.
WARNING Maintenance Unintentional sparking can result in fire or electric shock. Regular maintenance will improve the performance and extend the life of the engine. See any Authorized Briggs & Stratton Dealer for service. Use only genuine Briggs & Stratton parts. Other parts may not perform as well, may damage the engine, and may result in injury. In addition, use of other parts may void your warranty.
Air Cleaner All engines have a foam air cleaner element. CAUTION Replace element if very dirty or damaged. Air cleaner filter element must be oiled or engine damage will occur. COVER CUP FILTER ELEMENT Style 1 BASE Style 2 TO REPLACE FILTER: • • • • • Remove screw. Carefully remove air cleaner to prevent debris from falling into carburetor. Take air cleaner apart and clean all parts. Wash Oil-Foam element in liquid detergent and water. Squeeze dry in a clean cloth.
Spark Plug Use only Briggs & Stratton Spark Tester (part number 19368) to check for spark. .030” (0.76 mm) WIRE GAUGE Combustion Deposits We recommend that after every 100-300 hours you have an authorized Briggs & Stratton Service Dealer remove combustion deposits from the cylinder, cylinder head, top of piston, and around valves. Muffler WARNING Replacement parts for the muffler must be the same and installed in the same position as the original parts, otherwise fire can occur.
Storage Engines stored over 30 days need special attention. [1] To prevent gum from forming in fuel system or on essential carburetor parts: a) if fuel tank contains oxygenated or reformulated gasoline (gasoline blended with an alcohol or an ether), run engine until it stops from lack of fuel, or b) if fuel tank contains gasoline, either run engine until it stops from lack of fuel, or add a gasoline additive to the gas in the tank. (See parts list.
Warranty Information Briggs & Stratton Corporation (B&S), the California Air Resources Board (CARB) and the United States Environmental Protection Agency (U.S. EPA) Emissions Control System Warranty Statement (Owner's Defect Warranty Rights and Obligations) The California Air Resources Board (CARB), U.S. EPA and B&S are pleased to explain the Emissions Control System Warranty on your small off-road engine (SORE).
ABOUT YOUR ENGINE WARRANTY Briggs & Stratton welcomes warranty repair and apologizes to you for being inconvenienced. Any Authorized Service Dealer may perform warranty repairs. Most warranty repairs are handled routinely, but sometimes requests for warranty service may not be appropriate. For example, warranty would not apply if engine damage occurred because of misuse, lack of routine maintenance, shipping, handling, warehousing or improper installation.
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY Effective September 1, 2006 LIMITED WARRANTY Briggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defective in material or workmanship or both. Transportation charges on parts submitted for repair or replacement under this warranty must be borne by purchaser. This warranty is effective for and is subject to the time periods and conditions stated below.
