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Briggs & Stratton Commercial Turf Series OHV Engine — 27 HP, 1in. x 3 5/32in. Shaft, Model# 44Q977-0037-G5
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Briggs & Stratton Commercial Turf Series OHV Engine — 27 HP, 1in. x 3 5/32in. Shaft, Model# 44Q977-0037-G5

Item# 41329

Only $1199.99
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Factory Shipped —
Estimated Delivery: 6 - 11 Business Days
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Ships Truck 94.0 lbs
Unloading Requirements
Not Available in Stores

Manufacturer's Warranty: 24 months parts / 24 months labor

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Product Summary

Briggs & Stratton®'s Commercial Turf™ Series OHV Engine is purpose-built for use in zero-turn mowers and designed to perform under the harsh, demanding conditions where these workhorse machines do their job. With dust and particle filtration, an advanced debris management system and beefed-up cylinder block structure, this engine has what it takes to make a day's work of the toughest mowing jobs. U.S.A.

What's Included

  •  (1) Engine

Features + Benefits

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  •  Overhead valve design runs cooler and delivers more power, longer engine life and improved fuel economy
  •  Advanced debris management system deflects dirt and debris from the engine
  • High-capacity dual-sealing air cleaner cartridge catches any remaining debris
  • Patented cyclonic air filter system forces debris away from the air cleaner element to be ejected through a one-way valve
  • Dura-Bore™ cast iron sleeve withstands wear and abuse while providing improved oil control
  • Dynamically balanced V-twin crankshaft minimizes engine vibration
  •  Tool-less air cleaner cover for easy air filter changes
  • 12V gear-drive starter and 16 Amp alternator with starter panel assembly

Key Specs

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Item#41329
Ship Weight94.0 lbs
Engine Displacement (cc)724
Start TypeElectric w/recoil backup
ApplicationZero-turn mower, commercial lawn tractor
Engine TypeCommercial Turf Series
Rated Power (HP)27
Shaft OutputVertical
Crankshaft1 in. dia. x 3 5/32 in.L, 1/4-in. keyway
Shaft Diameter (in.)1
Shaft Length (in.)3 5/32
Shaft Keyway (in.)Tapped 7/16-20
Shaft End Tapped (Diameter (in.)/Threads per inch)7/16-20
Shaft Rotation (From PTO Shaft Side)CCW
Bearing TypeBall
Cylinders (qty.)2
Cylinder BoreCast iron
Bore x Stroke (in.)3.12 x 2.89
Cooling SystemAir cooled
Air Cleaner TypeCyclonic
Fuel TankNo
Fuel TypeGasoline
Fuel PumpYes, impluse
Fuel FilterYes
Oil Capacity (qt.)2
Lubrication SystemPressure
Low Oil AlertNo
Low Oil ShutdownNo
Ignition SystemElectronic
Governor SystemMechanical
CarburetorFloat
Throttle ControlRemote
Choke ControlRemote
Max. RPM3,300
Charging System Amps16
Muffler IncludedNo
Flywheel BrakeNo
Auto Compression ReleaseNo
Dimensions L x W x H (in.)23 x 21 x 22
EPA/CARB Approval (California Air Resource Board)Yes

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
24 months parts / 24 months labor

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Extended Warranty Repair Plan
Only $99.99
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Only $169.99
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Extended Warranty + Accidental Damage Repair Plan
Only $149.99
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Only $249.99
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Briggs & Stratton Commercial Turf Series OHV Engine — 27 HP, 1in. x 3 5/32in. Shaft, Model# 44Q977-0037-G5 The price is $1,199.99.
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Hide Similarities
Engine Displacement (cc)
724 810 724 627 627
Start Type
Electric Electric Electric w/recoil backup Electric Electric
Application Commercial mower, zero-turn mower, lawn tractor Zero-turn mower, commercial application Zero-turn mower, commercial lawn tractor Commercial mower, lawn tractor Riding lawn mowers, lawn tractors
Engine Type Professional Series V-Twin Commercial Turf Series Commercial Turf Series Vanguard V-Twin OHV Vanguard V-Twin OHV
Rated Power (HP)
- - 27 23 23
Shaft Output
Vertical Vertical Vertical Vertical Vertical
Crankshaft 1 x 3 5/32 1 1/8 x 4 5/16 1 in. dia. x 3 5/32 in.L, 1/4-in. keyway - -
Shaft Diameter (in.) 1 1 1/8 1 1 1 1/8
Shaft Length (in.) 3 5/32 4 5/16 3 5/32 3 5/32 3 5/32
Shaft Keyway (in.) 1/4 1/4 Tapped 7/16-20 1/4 -
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20 7/16-20 7/16-20 7/16–20 7/16–20
Shaft Rotation (From PTO Shaft Side) CCW CCW CCW Counterclockwise Counterclockwise
Gear Reduction No No - - -
Bearing Type
Ball Ball Ball Plain Plain
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron Cast iron Cast iron Cast iron
Bore x Stroke (in.)
3.12 x 2.89 3.30 x 2.89 3.12 x 2.89 2.97 x 2.76 2.97 x 2.76
Compression Ratio 8.5:1 8.5:1 - - -
Cooling System
Air cooled Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type
Dual element Cyclonic Cyclonic Dual element Dual element
Fuel Tank Not included Not included No Not included Not included
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Pump Yes Yes Yes, impluse - -
Fuel Filter Yes Yes Yes - -
Oil Capacity (qt.)
2 2 2 1.5 (48 oz.) 1.5 (48 oz.)
Lubrication System
Full pressure Pressure Pressure Full pressure Full pressure
Low Oil Alert No No No No -
Low Oil Shutdown No No No - -
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Mechanical Mechanical Mechanical Mechanical Mechanical
Carburetor
Float Float Float Float Float
Throttle Control
Remote Remote Remote Remote Remote
Choke Control Choke-A-Matic Remote Remote - -
Max. RPM
3,300 3,600 3,300 3,300 3,600
Charging System Amps 16 16 16 16 -
Muffler Included
No No No No No
Flywheel Brake No No No - -
Auto Compression Release No No No - -
Bolt Circle (in.)
10 10 - 10 10
Dimensions L x W x H (in.)
18 x 19 1/16 x 14 5/16 23 x 21 x 19 23 x 21 x 22 18 x 16 x 13 1/2 18 x 16 x 13 1/2
EPA/CARB Approval (California Air Resource Board) Yes Yes Yes Yes -