37.0 Gross HP* EFI


Vanguard EFI

Advanced Debris Management


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

Advanced Debris Management

Keeps engine clean and cool for enhanced durability and performance

Dura-Bore Cast Iron Cylinder Sleeve

Withstands wear while providing improved oil control

Engine Warranty

Three year commercial engine warranty for all applications

Oxygen Sensor - Closed loop System

Enables up to 25% fuel savings ***

High Pressure Fuel Pump Module

Alcohol & Stale Fuel Resistance

Electric Control Module (ECU)

Allows for altitude compensation and optimized starting.

Service Solution

Suite of support and diagnostic tools allows for minimizing potential downtime

Full Pressure Lubrication w/ 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

Heavy-Duty Cylinder and 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

Five-Inch Centrifugal Multi-Stage Air Cleaner

Provides maximum engine protection, especially under dirty and dusty conditions

Industrial Grade Solenoid Shift Starter

Quick reliable starts

Magnetron® Electronic Ignition

Quick dependable starts with no maintenance required

Engineered Resin Blower Housing, Phase Modulated Flywheel Fan & Large Volume Super Lo-Tone Muffler

Lowers noise level and improves sound quality

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


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61E8 & 61E9
Engine Displacement (cc)
Bore (in)
Weight (lbs)
Compression Ratio
Ignition System
Computer Controlled Battery Ignition
Length (in)
Height (in)
Certified Power Rating
HP (gross) *
Engine Configuration
Stroke (in)
Oil Capacity (oz)
Air Cleaner
Five-Inch Cyclonic Air Cleaner
Lubrication System
Full Pressure Lubrication System with Oil Cleaner
Width (in)
Warranty **
3 Year Limited

*All power levels are stated gross HP at 3,600 RPM per SAE J1940.
**See operator's manual or dealer for complete warranty details.
†Fuel savings may vary based on cutting conditions and other factors.


Key Switch
Alternators (20 & 20-50 amp)
Oil Pressure Switch
Straight Keyed Cranks (1-1/8" & 1-7/16" Diameters)
CDI Ignition with Rev Limiter
Engine Mounted Choke and Throttle Control
Flywheel Stub Shaft
Low Profile Air Cleaner
High & Mid Mounted Mufflers
High Speed 4750rpm Package
Direct Throttle Control
Tach/Hour Meter with Check Engine Light
Low Idle Speed Control

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