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Kohler Command OHV Horizontal Toro/Exmark Zero-Turn Mower Replacement Engine — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH740-3175
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Kohler Command OHV Horizontal Toro/Exmark Zero-Turn Mower Replacement Engine — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH740-3175

Item# 24793

Only $1999.99
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Factory Shipped —
Estimated Delivery: 7 - 12 Business Days
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Ships Truck - (108.0 lbs)
Unloading Requirements
Not Available in Stores

Manufacturer's Warranty: 3 Yr Consumer Limited

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Product Summary

The Kohler 725cc Command OHV Horizontal Engine is a replacement engine for the Toro/Exmark Zero-Turn Mower. The perfect choice when you're looking for fast starts, increased power and unequaled performance.

What's Included

  • (1) Engine
  • (1) Owner's manual

Features + Benefits

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  • 5 5/8in. and 7 3/4in. bolt circles, 7in. dia. pilot
  • 7 1/4in. x 3 1/2in. mounting base
  • Electric start
  • Full-pressure lube with spin-on oil filter
  • Heavy-duty canister air cleaner system
  • 1in. x 2.53in. front PTO shaft
  • Cast iron cylinder liners
  • Mechanical fuel pump
  • Remote controls
  • Hydraulic valve lifters
  • Oil Sentry®, shipped wired
  • 50-state compliant engine
  • Air cleaner ships separately
  • Muffler not included

Key Specs

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Item#24793
Ship Weight108.0 lbs
Engine Displacement (cc)725
Start TypeElectric
ApplicationToro Exmark ZTR
Engine TypeAir cooled
Torque (ft./lbs.)42.3 at 2,400
Displacement (cu. in.)725
Shaft OutputCCW
CrankshaftHardened
Shaft Diameter (in.)1 1/8
Shaft Length (in.)2 3/4
Shaft Keyway (in.)0.25
Shaft End Tapped (Diameter (in.)/Threads per inch)7/16–20 UNF
Shaft Rotation (From PTO Shaft Side)CCW
PTO Height (in.)6.125
Cylinders (qty.)2
Cylinder BoreCast iron liner
Bore x Stroke (in.)3.3 x 2.6
Compression Ratio9:1
Cooling SystemAir
Air Cleaner TypeCanister
Fuel TypeGasoline
Fuel PumpMechanical
Fuel FilterYes
Oil Capacity (qt.)2
Lubrication SystemFull pressure
Low Oil AlertYes
Low Oil ShutdownYes
Ignition SystemElectronic
Governor SystemMechanical
CarburetorSmart choke
Throttle ControlRemote
Choke ControlRemote
Max. RPM3,600
Charging System Amps20 A regulated
Muffler IncludedNo
Bolt Circle (in.)5.625 and 7.75, 7 in. pilot
Mounting Base L x W (in.)7.250 x 3.504
Dimensions L x W x H (in.)14 x 17 x 26 1/2
EPA/CARB Approval (California Air Resource Board)Yes

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
3 Yr Consumer Limited

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
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Extended Warranty + Accidental Damage Repair Plan
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Kohler Command OHV Horizontal Toro/Exmark Zero-Turn Mower Replacement Engine — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH740-3175 The price is $1,999.99.
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Hide Similarities
Engine Displacement (cc)
624 624 725 725 747
Start Type
Electric Electric Electric Electric Electric
Application Grain augers, boring equipment, post hole augers and more Contstruction, farm Toro Exmark ZTR Stump grinders, construction equipment, grain augers Garden tractors, construction equipment, etc.
Engine Type Air cooled OHV Horizontal Air cooled Gasoline Air
Torque (ft./lbs.)
32.2 @ 2,200 RPM 32.7 at 2,400 rpm 42.3 at 2,400 40.9 @ 2,800 RPM 45 at 2,400 RPM
Displacement (cu. in.)
39.1 624 725 725 45 1/2
Shaft Output
CCW CCW CCW CCW CCW
Crankshaft Hardened - Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1.437 1 1/8 1.437 1 7/16
Shaft Length (in.) 4 4.453 2 3/4 4.453 4 29/64
Shaft Keyway (in.)
3/8 0.375 0.25 0.375 3/8
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16 - 20 1 1/2 x 5/8-18 7/16–20 UNF 5/8–18 UNF 5/8-18 unf
Shaft Rotation (From PTO Shaft Side) CCW CCW CCW CCW CCW
PTO Height (in.)
6 1/8 - 6.125 6.125 6 1/8
Bearing Type
- - - Sleeve PTO sleeve bearing
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron liner Cast iron liner Cast iron liner Cast iron
Bore x Stroke (in.)
3 x 2.6 3 x 2.77 3.3 x 2.6 3.3 x 2.6 3.3 x 2.7
Compression Ratio
8.5 : 1 8.5:1 9:1 9:1 9.4 : 1
Cooling System
Air Air Air Air Air
Air Cleaner Type
Dual element Dual element Canister Dual element Dual element
Fuel Type Gasoline Gasoline Gasoline Gasoline Gas
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
Large capacity Large capacity in-line Yes Yes Yes
Oil Capacity (qt.)
2 2 2 2 2
Lubrication System
Full pressure Full pressure Full pressure Full pressure Full pressure
Low Oil Alert
Yes Yes Yes Yes Yes
Low Oil Shutdown
Yes, wired not connected Yes Yes Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Manual Variable speed Mechanical Mechanical Mechanical
Carburetor
Smart choke Smart choke Smart choke Smart choke Smart choke
Throttle Control
Engine mounted Remote control Remote Engine mounted w/keyswitch Remote
Choke Control
Engine mounted Smart choke carburetor Remote Engine mounted w/keyswitch Remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 15 20 A regulated 20 A regulated 25
Muffler Included Yes Yes, w/guard No Yes -
Flywheel Brake - No - - -
Bolt Circle (in.)
5 5/8 x 7 3/4 7 5.625 and 7.75, 7 in. pilot 5.625 and 7.75, 7 in. pilot 5 5/8 and 7 3/4, 7 in. pilot
Mounting Base L x W (in.)
7 1/4 x 3 1/2 7.250 x 3.504 7.250 x 3.504 7.250 x 3.504 7 1/4 x 3.504
Mounting Bolt Pattern L x W (in.) 7 1/4 x 3 1/2 - - 7.250 x 3.504 -
Dimensions L x W x H (in.)
14 x 17.7 x 19 14 x 17 3/4 x 19 14 x 17 x 26 1/2 14 x 17 3/4 x 19 14 x 17.7 x 22.4
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes