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Kohler OHV Horizontal Exmark Zero-Turn Mower Replacement Engine with Electric Start — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH730-3225

Item# 24791
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Kohler OHV Horizontal Exmark Zero-Turn Mower Replacement Engine with Electric Start — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH730-3225

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Only $1999.99
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  •  Full-pressure lubrication system with spin-on oil filter
  • Flywheel PTO
  • Mechanical fuel pump
  • Cast iron cylinder sleeve for extended life
  • OHV design for cooler operation and longer valve life
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Estimated Delivery: 5 - 7 Business Days
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Product Summary

This Kohler® OHV Horizontal Engine is designed to be used as a replacement engine for an Exmark Zero-Turn Mower. U.S.A.

What's Included
  •  (1) Engine

Features + Benefits

  •  Full-pressure lubrication system with spin-on oil filter
  • Flywheel PTO
  • Mechanical fuel pump
  • Cast iron cylinder sleeve for extended life
  • OHV design for cooler operation and longer valve life
  • Oil Sentry®, shipped wired
Key Specs
Item# 24791
Brand Kohler Engines
Manufacturer's Warranty 3 Yr Consumer Limited
Ship Weight 108.0 lbs
Engine Displacement (cc) 725
Start Type Electric
Application Exmark ZTR mowers
Engine Type Horizontal
Torque (ft./lbs.) 38.4 (52.1 Nm) at 3,600 RPM
Displacement (cu. in.) 44
Shaft Output CCW
Crankshaft Hardened
Shaft Diameter (in.) 1 1/8
Shaft Length (in.) 2 3/4
Shaft Keyway (in.) 0.250
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20 unf
Shaft Rotation (From PTO Shaft Side) CCW
PTO Height (in.) 6 1/8
Cylinders (qty.) 2
Cylinder Bore Cast iron
Compression Ratio 9:1
Cooling System Air
Air Cleaner Type Heavy-duty canister
Fuel Type Gas
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 20
Muffler Included Yes
Bolt Circle (in.) 5 5/8 and 7 3/4, 7 in. pilot
Mounting Base L x W (in.) 7 1/4 x 3 1/2
Mounting Bolt Pattern L x W (in.) 7 1/4 x 3 1/2
Dimensions L x W x H (in.) 14 x 17 3/4 x 26 1/2
EPA/CARB Approval (California Air Resource Board) Yes

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Replacement Parts
Call To Order: 1-800-657-0516

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Kohler OHV Horizontal Exmark Zero-Turn Mower Replacement Engine with Electric Start — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH730-3225 The price is $1,999.99.
Kohler OHV Horizontal Exmark Zero-Turn Mower Replacement Engine with Electric Start — 725cc, 1 1/8in. x 2 3/4in. Shaft, Model# PA-CH730-3225
(Not Yet Rated - New)
Item# 24791
Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
Only $1999.99
Hide Similarities
Engine Displacement (cc)
674 674 725 747 725
Start Type
Electric Electric Electric Electric Electric
Application Garden tractor, zero-turn mower, skid steer loader, bale chopper, utility vehicle Utility vehicle, sand trap rake, grain auger, boring equipment, carpet cleaning machines, pressure washers and furnace vacs Construction, farm Garden tractors, construction equipment, etc. Exmark ZTR mowers
Engine Type Command V-Twin OHV Gasoline Gasoline Air Horizontal
Torque (ft./lbs.)
35 (47.5 Nm) at 3,600 RPM 35 (47.5 Nm) at 3,600 RPM 39.2 (53.1 Nm) at 3,600 RPM 41.2 (55.9 Nm) at 3,600 RPM 38.4 (52.1 Nm) at 3,600 RPM
Displacement (cu. in.)
41 - 725 45 1/2 44
Shaft Output
Horizontal Counterclockwise CCW CCW CCW
Crankshaft Hardened Hardened Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1 1/8 1.437 1 7/16 1 1/8
Shaft Length (in.) 4 4 4.453 4 29/64 2 3/4
Shaft Keyway (in.)
1/4 1/4 0.375 3/8 0.250
Shaft End Tapped (Diameter (in.)/Threads per inch) 1.5-in. deep 7/16-20 UNF 7/16–20 UNF 5/8–18 UNF 5/8–18 UNF 7/16-20 unf
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise CCW CCW CCW
PTO Height (in.)
6 1/8 6 1/8 6.125 6 1/8 6 1/8
Bearing Type Parent material Parent material Sleeve PTO sleeve bearing -
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron sleeve Cast iron liner Cast iron Cast iron
Bore x Stroke (in.) 3.1 x 2.6 3 x 2.6 3.3 x 2.6 3.3 x 2.7 -
Compression Ratio
8.5:1 8.5:1 9:1 9.4 : 1 9:1
Cooling System
Air cooled Air cooled Air Air Air
Air Cleaner Type
Dual element Dual element Dual element Dual element Heavy-duty canister
Fuel Type Gasoline Gasoline Gasoline Gas Gas
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
Large capacity in-line Large capacity 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
Oil Sentry, shipped disconnected Oil Sentry, shipped disconnected Yes Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Variable speed Variable speed Mechanical Mechanical Mechanical
Carburetor
Smart Choke Smart Choke Smart choke Smart choke Smart choke
Throttle Control
Remote Engine mounted Engine mounted Remote Remote
Choke Control
Remote Smart Choke Engine mounted w/keyswitch Remote Remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 15 20A regulated 25 20
Muffler Included
No No - - Yes
Auto Compression Release No No - - -
Bolt Circle (in.)
5 5/8, 7 3/4, 7 pilot 5 5/8, 7 3/4, 7 pilot 5.625 and 7.75, 7 in. pilot 5 5/8 and 7 3/4, 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 1/4 x 3 1/2 7.250 x 3.504 7 1/4 x 3.504 7 1/4 x 3 1/2
Mounting Bolt Pattern L x W (in.) 7 1/4 x 3 1/2 5 5/8, 7 3/4; 7 pilot - - 7 1/4 x 3 1/2
Dimensions L x W x H (in.)
14 x 17 7/10 x 19 14 x 17 7/10 x 19 14 x 17 3/4 x 26 1/2 14 x 17.7 x 22.4 14 x 17 3/4 x 26 1/2
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes