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Operating & Maintenance
Instructions
Model Series
Covered in
This Manual
405700
406700
407700
445700
Model Type Code
Note: General Model Series numbers noted above include many specific numbers
Month Day Year
like the ones on your engine. To get replacement parts or technical assistance in
the future, write your engine Model, Type, Code and date of purchase here.
TABLE OF CONTENTS
WARNING
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Briggs & Stratton does not appr
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THE POWER IN POWER EQUIPMENT Thank you for selecting a Briggs & Stratton engine to power your equipment. Briggs & Stratton is committed to producing a line of engines which will make your life’s chores easier to perform. We have, at the same time, improved the design of our engines so they are environmentally friendly. Since 1995, we have succeeded in reducing smog-forming exhaust emissions from our engines by 70%. Briggs & Stratton’s efforts have not stopped there. We are also committed to des
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274277 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 t
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SAFETY WARNING WARNING Gasoline and its vapors are extremely flammable Unintentional sparking can result in fire or electric and explosive. shock. Fire or explosion can cause severe burns or death. Unintentional start-up can result in entanglement, traumatic amputation, or laceration. WHEN ADDING FUEL • Turn engine OFF and let engine cool at least 2 BEFORE PERFORMING ADJUSTMENTS OR minutes before removing gas cap. REPAIRS • Fill fuel tank outdoors or in well-ventilated area. • Disconnect spark p
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SAFETY WARNING WARNING Engines give off carbon monoxide, an odorless, Rotating parts can contact or entangle hands, feet, colorless, poison gas. hair, clothing, or accessories. Breathing carbon monoxide can cause nausea, Traumatic amputation or severe laceration can fainting or death. result. • Start and run engine outdoors. • Operate equipment with guards in place. • Do not start or run engine in enclosed area, even if • Keep hands and feet away from rotating parts. doors or windows are open. •
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ENGINE PARTS 5 6 8 13 4 12 3 11 7 2 1 10 9 1. Spark plug wire 8. Blower housing 2. Oil drain plug 9. Oil filter 3. 12V electric starter 10. Emission label 4. Oil fill/Dipstick 11. Intake manifold 5. Rotating screen 12. Carburetor 6. Air cleaner 13. Engine Model Type Code xxxxxxxxxx xxxxxxxxxx 7. Fuel pump GENERAL INFORMATION THE INTERNATIONAL SYMBOLS USED ENGINE MODEL ON THE ENGINE OR This is a twin cylinder, overhead valve (OHV), air-cooled IN THIS MANUAL INCLUDE: engine. It is a low emissions
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274277 OIL SAE Viscosity Grades CAUTION: This engine is shipped from Briggs & Stratton without oil. Check oil level before starting engine. If you start the engine without oil, the engine ** will be damaged beyond repair and will not be * covered under warranty. OIL CAPACITY -20 0 20 32 40 60 80 100 Engine without oil filter holds approximately 1-7/8 quarts °F -30 -20 -10 0 10 20 30 40 °C (60 ounces; 1.8 liter). STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE Engine equipped with o
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FUEL • This engine is certified to operate on gasoline. Exhaust TYPE OF FUEL TO USE Emission Control System: EM (Engine Modifications). •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. CAUTION: Some fuels, called oxygenated or reformu- Purchase fuel in quantity that can be used within 30 days. lated gasoline, are gasoline blended with alcohols or • Do not use gasoline which contains
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STARTING AND STOPPING ELECTRIC (KEY) STARTER TO START ENGINE FULL Choke [2] Open fuel shut-off valve (if equipped). [4] Move throttle (if equipped) [3] Move choke control to to FAST. Operate engine [1] Check oil level (see p. 7). CHOKE or START. with throttle in FAST. [6] Let engine warm up. Choke Equipped: Move choke control lever toward RUN a short dis- tance at a time over sev- eral seconds in warm weather or minutes in cold weather. Let engine run smoothly before each [5] Insert key an
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MAINTENANCE MAINTENANCE EMISSION CONTROL Regular maintenance will improve the performance and Maintenance, replacement or repair of the emission extend the life of the engine. See any Authorized Briggs & control devices and systems may be performed by any Stratton Dealer for service. Use only genuine Briggs & nonroad engine repair establishment or individual. Stratton parts. Other parts may not perform as well, However, to obtain no charge repairs under the terms and may damage the engine, and m
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MAINTENANCE AIR CLEANER CHANGING OIL FILTER All engines have an air cleaner cartridge. In addition, some engines have a pre-cleaner. Change oil filter after every 100 hours or every season. CLEANING PRE-CLEANERS AND CARTRIDGES CAUTION: Do not use pressurized air or solvents to clean cartridge. Pressurized air can damage cartridge; solvents will dissolve cartridge. Pre-cleaner To clean pre-cleaner (if equipped), separate it from cartridge and wash in liquid detergent and water. Squeeze dry in a c
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MAINTENANCE ENGINE AND ENGINE PARTS 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. If you perform any maintenance on the engine, first disconnect the spark plug wires from the spark plugs, and disconnect the battery at the negative terminal (electric WARNING starter engines only) to prevent unintentional sparking. Unintentional sparking can result in fire or electri
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MAINTENANCE CLEANING DEBRIS ROTATING SCREEN CAUTION: Do not use water to clean engine parts. Water could contaminate fuel system. Use a brush or dry cloth. Engine parts should be kept WARNING clean to reduce the risk of overheating and ignition of accumulated debris. This is Rotating Screen especially important if cutting tall grass. Daily or before every use, clean accumulated debris from engine. Keep linkage, springs and controls clean. Keep area around and behind muffler free of any combus- t
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ADJUSTMENTS TO ADJUST REMOTE THROTTLE CONTROL CARBURETOR ADJUSTMENT If the engine does not start or if it runs roughly, the remote WARNING throttle control may need adjustment. See your authorized Briggs & Stratton dealer or follow the instructions below. The manufacturer of the equipment on which this engine is installed specifies top speed at which the THROTTLE engine will be operated. DO NOT EXCEED this speed. STOP Differences in fuel, temperature, altitude or load may require minor carbureto
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SERVICE & STORAGE An illustrated shop manual includes PARTIAL LIST OF GENUINE BRIGGS & common specifications and detailed in- STRATTON PARTS formation covering adjustment, tune-up and repair of Briggs & Stratton twin BRIGGS & STRATTON cylinder, OHV, 4 cycle engines. It is available for purchase from an Autho- PART PART NO. (or equivalent) rized Briggs & Stratton Service Dealer or you can order it from the factory. Write: Air cleaner cartridge 499486 Briggs & Stratton Corporation Air cleaner pre-
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SERVICE & STORAGE [2] While engine is still warm, change oil. STORAGE Engines stored over 30 days need special attention. [3] Remove spark plugs and pour about 1 oz. (30 ml) of [1] To prevent gum from forming in fuel system or on engine oil into each cylinder. Replace spark plugs and essential carburetor parts: crank slowly to distribute oil. a) if fuel tank contains oxygenated or reformulated gasoline (gasoline blended with an alcohol or an [4] Clean engine of surface debris, chaff or grass. et
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Briggs & Stratton Corporation (B&S), the California Air Resources Board (CARB) and the United States Environmental Protection Agency (U.S. EPA) Emission Control System Warranty Statement (Owner’s Defect Warranty Rights and Obligations) EMISSION CONTROL WARRANTY COVERAGE IS APPLICABLE TO CERTIFIED MODEL YEAR 1997 AND LATER ENGINES TO CERTIFIED ENGINES PURCHASED IN CALIFORNIA IN 1995 WHICH ARE PURCHASED AND USED ELSEWHERE IN THE AND THEREAFTER, WHICH ARE USED IN CALIFORNIA, AND UNITED STATES. Cali
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About your engine warranty: (see next page for statement of LIMITED WARRANTY). Briggs & Stratton welcomes warranty repair and apologizes 4. Parts which are scored or broken because an engine was to you for being inconvenienced. Any Authorized Service operated with insufficient or contaminated lubricating oil, Dealer may perform warranty repairs. Most warranty repairs or an incorrect grade of lubricating oil (check oil level daily are handled routinely, but sometimes requests for warranty or afte
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BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY effective July 1, 1999 Replaces all undated Warranties and all Warranties dated before July 1, 1999 LIMITED WARRANTY “Briggs & Stratton Corporation will repair or replace, free of charge, any part, or parts of the engine that are 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 the time periods and subject t
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