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    Professional Series™ (Single Cylinder)

    Professional Series Single Cylinder

    Professional Series™ (Single Cylinder)

    World-class performance – time after time. With commercial-grade power, easy starting and quiet operation, the Professional Series riding mower engine delivers great results for your toughest jobs. And it keeps delivering, because this mower engine is built to last with our exclusive Advanced Debris Management System, chrome-plated exhaust valves and other durable features.

    500 - 540

    Displacement (cc)
    Feature

    Features

    Professional Series™ Rider Mower Engines

    Single cylinder and V-twin engines offer the best of both worlds: world-class endurance and power.

    Advanced Debris Management System

    Keeps the engine clean by deflecting and ejecting grass and debris for a longer engine life.

    Anti-Vibration System - AVS®

    Provides a smoother ride and more comfort.

    ReadyStart® Engine Starting System

    No prime, no choke, no worries. Just pull for power.

    Specifications

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    Model Number
    31S9
    Engine Displacement (cc)
    500
    Cylinder
    Cast Iron Sleeve
    Bore (mm)
    90.5
    Stroke (mm)
    77.8
    Oil Capacity (L)
    1.4
    Weight (kg)
    29.5
    Length (mm)
    479
    Width (mm)
    411
    Height (mm)
    327
    Limited Consumer Warranty †
    2 Years
    Limited Commercial Warranty †
    1 Year
    Marketing Warranty
    2 Years
    Marketing Oil Capacity
    1.4
    Marketing Gross Horsepower
    17.5 - 19.0
    Gross Horsepower
    17.5
    Engine Description
    Single cylinder, 4-stroke, air cooled, OHV (Overhead Valve)

    *Power levels are stated gross horsepower at 3600rpm per SAE J1940 as rated by Briggs & Stratton.
    †See briggsandstratton.com for warranty details.

    Model Number
    33S8
    Engine Displacement (cc)
    540
    Cylinder
    Cast Iron Sleeve
    Bore (mm)
    94.0
    Stroke (mm)
    77.8
    Oil Capacity (L)
    1.4
    Weight (kg)
    29.5
    Length (mm)
    479
    Width (mm)
    411
    Height (mm)
    327
    Limited Consumer Warranty †
    2 Years
    Limited Commercial Warranty †
    1 Year
    Marketing Warranty
    2 Years
    Marketing Oil Capacity
    1.4
    Marketing Gross Horsepower
    17.5 - 19.0
    Gross Horsepower
    19.0
    Engine Description
    Single cylinder, 4-stroke, air cooled, OHV (Overhead Valve)

    *Power levels are stated gross horsepower at 3600rpm per SAE J1940 as rated by Briggs & Stratton.
    †See briggsandstratton.com for warranty details.

     

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