25.0 Gross HP* EFI/ETC

25.0 Gross HP* EFI/ETC


EFI & ETC Technology

5-Step Debris Management System


Horsepower (HP)


Displacement (cc)


No. of Cylinders


Fuel Type


V-Twin OHV Technology

Superior balance, low vibration, lower emissions, improved valve life, better fuel economy and higher HP/Weight.

Patented 5-Step Debris Management system

Extended durability under heavy debris conditions and long service intervals

Dura-Bore Cast Iron Cylinder Sleeve

Withstands wear while providing improved oil control.

Engine Warranty**

Three year commercial engine warranty for all applications

Full Pressure Lubrication with Spin-On Oil Filter

Cleans oil and protects engine components to ensure maximum lubrication and long life.

Centrally Located Oil Pump and Pickup

Faster priming and allows for a higher angle of operation.

Oil Cooler

Reduces oil temperature, improves lubrication and extends oil change intervals.

Enhanced Cylinder & Sump

Engine block designed to provide superior durability

High Efficiency Head Design

Angled ports optimizes tumble and mixture preparation for improved efficiency, smoother idle, lower emissions and more power.

Dynamically Balanced Crankshaft

Minimizes engine noise and vibration.

Integral Cyclonic Air Filter

Filters out debris and keeps it clean and running smooth.

Innovative Debris Chopper Fan

Excellent debris management and up to 30-degree cooler engine temperatures.

Electronic Ignition

Quick dependable starts with no maintenance required

Cooling Fin Inspection Panels

Enables quick debris inspection and cleaning

Heavy-Duty Starting System & MCR

Reliable cold starting under high inertia loads

Electronic Throttle Control

Adjusts engine power to load and provides consistent quality of cut

High Pressure Fuel Pump Module

Alcohol & Stale Fuel Resistance

CAN J1939 Communication

Easier interface within industry standard ECU communication protocol

Electric Control Module (ECU)

Allows for altitude compensation and optimized starting

Service Solution

Suite of support and diagnostic tools allows for minimizing potential downtime


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*All power levels are stated horsepower per SAE J1940 as rated by Briggs & Stratton.
**See operator's manual or dealer for complete warranty details.
***Three-year commercial limited warranty applies to engines manufactured after June 30, 2017.



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

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Tips & Troubleshooting

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

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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.

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Commercial Limited Warranty

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

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Alternators (16 & 20 amp)
Oil Pressure Switch
Straight Keyed Cranks (1" & 1-1/8" Diameters)
Flexible Oil Drain Extension
Exhaust Mounting Studs
CARB Compliant EVAP Purge Ports

Product Literature

Get more detailed information on what you can expect from Vanguard® and our CXi Series V-Twin engines by downloading our literature here.

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