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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
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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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Was $1749.99
Sale $1699.99

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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
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Estimated Delivery: 5 - 7 Business Days
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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

  • 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
Item# 24793
Brand Kohler Engines
Manufacturer's Warranty 3 Yr Consumer Limited
Ship Weight 108.0 lbs
Engine Displacement (cc) 725
Start Type Electric
Application Toro Exmark ZTR
Engine Type Air cooled
Torque (ft./lbs.) 39.2 (53.1 Nm) at 3,600 RPM
Displacement (cu. in.) 725
Shaft Output CCW
Crankshaft Hardened
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 Bore Cast iron liner
Bore x Stroke (in.) 3.3 x 2.6
Compression Ratio 9:1
Cooling System Air
Air Cleaner Type Canister
Fuel Type Gasoline
Fuel Pump Mechanical
Fuel Filter Yes
Oil Capacity (qt.) 2
Lubrication System Full pressure
Low Oil Alert Yes
Low Oil Shutdown Yes
Ignition System Electronic
Governor System Mechanical
Carburetor Smart choke
Throttle Control Remote
Choke Control Remote
Max. RPM 3,600
Charging System Amps 20A regulated
Muffler Included No
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

Customer Reviews

Product Question + Answer
Replacement Parts
Call To Order: 1-800-657-0516

Mon - Fri 7:00 AM - 6:00 PM (Central)
Sat 7:00 AM - 3:00 PM (Central)

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(Not Yet Rated - New)
Item# 44153
Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
Was $1279.99
Sale $1259.99
Save $20.00
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 $1,699.99.
Kohler Command OHV Horizontal Toro/Exmark Zero-Turn Mower Replacement Engine — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH740-3175
(Not Yet Rated - New)
Item# 24793
Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
Was $1749.99
Sale $1699.99
Save $50.00
5 / 5 (1)
Item# 44601
Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
Only $1699.99
(Not Yet Rated - New)
Item# 44598
Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
Only $1749.99
(Not Yet Rated - New)
Item# 24794
Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
Only $1849.99
Hide Similarities
Engine Displacement (cc)
674 725 674 674 747
Start Type
Electric Electric Electric Electric Electric
Application Utility vehicle, sand trap rake, grain auger, boring equipment, carpet cleaning machines, pressure washers and furnace vacs Toro Exmark ZTR Simplicity garden tractor Grasshopper zero-turn mower Garden tractors, construction equipment, etc.
Engine Type Gasoline Air cooled Gasoline Command Pro OHV Air
Torque (ft./lbs.)
35 (47.5 Nm) at 3,600 RPM 39.2 (53.1 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM 41.2 (55.9 Nm) at 3,600 RPM
Displacement (cu. in.)
- 725 41 41 45 1/2
Shaft Output
Counterclockwise CCW Horizontal Horizontal CCW
Crankshaft Hardened Hardened Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1 1/8 1 1/8 1 1/8 1 7/16
Shaft Length (in.) 4 2 3/4 2.79 3 11/32 4 29/64
Shaft Keyway (in.)
1/4 0.25 1/4 1/4 3/8
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16–20 UNF 7/16–20 UNF 1 1/2 deep x 7/16-20 UNF 17/16-20 UNF 5/8–18 UNF
Shaft Rotation (From PTO Shaft Side) Counterclockwise CCW Counterclockwise Counterclockwise CCW
PTO Height (in.)
6 1/8 6.125 6 1/8 6 1/8 6 1/8
Bearing Type
Parent material - Parent material Parent material PTO sleeve bearing
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron sleeve Cast iron liner Cast iron sleeve Cast iron sleeve Cast iron
Bore x Stroke (in.)
3 x 2.6 3.3 x 2.6 3 x 2.6 3 x 2.6 3.3 x 2.7
Compression Ratio
8.5:1 9:1 8.5:1 8.5:1 9.4 : 1
Cooling System
Air cooled Air Air cooled Air cooled Air
Air Cleaner Type
Dual element Canister Dual element Dual element Dual element
Fuel Type Gasoline Gasoline Gasoline Gasoline Gas
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
Large capacity Yes Spin-on In line 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
Oil Sentry, shipped disconnected Yes Oil Sentry, shipped disconnected Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Variable speed Mechanical Variable speed Mechanical Mechanical
Carburetor
Smart Choke Smart choke Smart Choke Smart choke Smart choke
Throttle Control
Engine mounted Remote Remote Remote Remote
Choke Control
Smart Choke Remote Remote Remote Remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 20A regulated 15 15 25
Muffler Included No No No Yes -
Auto Compression Release No - No No -
Bolt Circle (in.)
5 5/8, 7 3/4, 7 pilot 5.625 and 7.75, 7 in. pilot 5 5/8, 7 3/4; 7 pilot 5 5/8, 7 3/4, 7 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 1/4 x 3 1/2 7 1/4 x 3 1/2 7 1/4 x 3.504
Mounting Bolt Pattern L x W (in.) 5 5/8, 7 3/4; 7 pilot - 7 1/4 x 3 1/2 7 1/4 x 3 1/2 -
Dimensions L x W x H (in.)
14 x 17 7/10 x 19 14 x 17 x 26 1/2 14 x 18 x 19 14 x 17 7/10 x 19 14 x 17.7 x 22.4
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes