1. Home
    2. Engines
    3. Single-Cylinder Horizontal Shaft

    Vanguard® 400

    Vanguard 400

    Vanguard® 400

    This 408cc single-cylinder engine was built to outperform the competition in overall performance, true power and maintenance.

    • Features standard Integrated Cyclonic Air Filtration that doubles your equipment’s air filter replacement intervals to 600 hours.
    • Includes 3-in-1 controls with the new TransportGuard® that controls throttle, ignition and fuel to prevent mixing of fuel and oil during transport.
    • Designed to deliver a lower total cost of ownership.

    14

    Horsepower (HP)

    408

    Displacement (cc)

    1

    No. of Cylinders

    Gas

    Fuel Type
    Feature

    Features

    Starts Down to -29° C

    Mechanical compression release and choke optimized for improved cold weather starting.

    Cyclonic Air Cleaner

    Standard feature on all Vanguard single-cylinder engines, 600 hour replacement interval.

    1-Pull Starting

    Starting sequence optimized for shorter rope pull with lower pull force.

    Nano Media Air Cleaner Filter Element with Autoshed Technology

    Proprietary self-cleaning filter media specially engineered to work with the Vanguard 400 engine.

    Commercial-style Carburetor

    Carburetor optimized to ensure reliable starting and smooth running operation over a wide range of loads.

    Liquid Cylinder Gasket

    Provides more durable seal and reliable lubrication.

    Stale Fuel Resistance

    Specially designed fuel system improves resistance to effects of stale fuel.

    Acoustically Designed Engine

    Air Cleaner, Fuel Tank and Muffler optimized to reduce noise and deliver improved tonal quality.

    Governed Idle

    Allows more usable power at idle, precise speed setting and better load response.

    TransportGuard® System

    Simultaneous fuel/ignition shut-off protects the engine from oil/fuel dilution during transport and allows for both on-engine and remote controls.

    High Inclination Package

    Optional feature allows continuous 45° operation in any direction.

    Engine Warranty**

    Three year limited commercial engine warranty for all applications.

    Engine Cooling

    Specially designed blower, rewind and shielding to help engine run cooler for longer.

    Easy Repower

    Accommodates leading competitor's controls and dimensions, making it an easy drop-in replacement.

    Universal Controls

    Easy to convert from manual friction to return-to-idle or fixed-speed without additional parts.

    Oil Sensor

    Protects the engine from low oil level conditions.

    Specifications

    At least one product must be displayed. Please select another option to remove this product

    Model
    25V3
    HP (gross) *
    14
    Engine Displacement (cc)
    408
    Engine Configuration
    Horizontal
    Bore (in)
    3.46
    Stroke (in)
    2.64
    Weight (lbs)
    78
    Oil Capacity (oz)
    32
    Lubrication System
    Splash Lubrication
    Air Filter
    Integrated Cyclonic Air Cleaner
    Ignition System
    CDI Ignition
    Fuel Tank Capacity (L)
    5.74
    Compression Ratio
    8.3:1
    Width (in)
    17.9
    Length (in)
    14.3
    Height (in)
    18.1
    Certified Power Rating
    Download Power Curve
    Commercial Engine Warranty**
    3 Year Limited
    Manuals
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual -
    DownloadsOperator's Manual -
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Bulgarian, Czech, Estonian, Croatian, Hungarian, Lithuanian, Latvian, Polish, Romanian, Russian, Slovak, Slovenian, Turkish
    DownloadsOperator's Manual - English, Spanish-Colombian, Portuguese-Brazilian, French-European, Arabic, Swahili
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Chinese-Simplified, Vietnamese, Indonesian, Thai, Khmer, Korean, Malay, Japanese
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Spanish-Colombian, French-Canadian
    DownloadsOperator's Manual - English, Danish, Dutch, Finnish, French-European, Greek, Italian, German, Norwegian, Portuguese-European, Spanish-European, Swedish

    *All power levels are stated gross HP at 3,600 RPM per SAE J1940
    **See operator's manual or dealer for complete warranty details

    Support

    Manuals

    Download the operator's manual or illustrated parts list for your Vanguard™ engine by searching your engine model number.

    Find Manuals >

    Tips & Troubleshooting

    Have a question? Search our Frequently Asked Questions to find answers related to model specifications, routine maintenance, repair or troubleshooting. 

    Search FAQs >

    Dealer Locator

    World class parts delivery, industry-leading global warranties and unparalleled service & training keeps your equipment out of the shop and on the jobsite. 

    Find a Dealer >

    Commercial Limited Warranty

    Three-year commercial engine warranty for all applications. See operator's manual or dealer for complete warranty details. 

    Learn More >

    Options

    12V Electric Start
    Alternators - 3.0 & 2.0 amp
    Threaded Crankshaft
    Tapered Crankshaft
    Metric Flange
    High Profile Air Cleaner with EVAP Port
    Low Profile Air Cleaner
    Clear Flange Muffler
    Wire Muffler Guard
    Tankless / Mufferless
    High Inclination Package (45° operation)

    Product Literature

    Get more detailed information on what you can expect from Vanguard® and our Single-Cylinder advantage by downloading our literature here.

    Vanguard Facebook Vanguard Instagram Vanguard YouTube Vanguard LinkedIn


    Copyright © 2025 Briggs & Stratton. All rights reserved.