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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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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

Only $2299.99
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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

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

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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
  • Oil Sentry®, shipped wired

Key Specs

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Item#24791
Ship Weight108.0 lbs
Engine Displacement (cc)725
Start TypeElectric
ApplicationExmark ZTR mowers
Engine TypeHorizontal
Torque (ft./lbs.)42.7
Displacement (cu. in.)44
Shaft OutputCCW
CrankshaftHardened
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 BoreCast iron
Compression Ratio9:1
Cooling SystemAir
Air Cleaner TypeHeavy-duty canister
Fuel TypeGas
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
Muffler IncludedYes
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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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!

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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 $2,299.99.
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: 7 - 12 Business Days
Only $2299.99
Hide Similarities
Engine Displacement (cc)
624 624 624 725 725
Start Type
Electric Electric Electric Electric Electric
Application Grain augers, boring equipment, post hole augers and more Contstruction, farm Sand trap rake, garden tractor, lawn tractor, pump, utility vehicle Toro Exmark ZTR Exmark ZTR mowers
Engine Type Air cooled OHV Horizontal Air cooled Air cooled Horizontal
Torque (ft./lbs.)
32.2 @ 2,200 RPM 32.7 at 2,400 rpm 32.7 at 2,400 42.3 at 2,400 42.7
Displacement (cu. in.)
39.1 624 - 725 44
Shaft Output
CCW CCW CCW CCW CCW
Crankshaft Hardened - Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1.437 1.125 1 1/8 1 1/8
Shaft Length (in.) 4 4.453 4 2 3/4 2 3/4
Shaft Keyway (in.)
3/8 0.375 0.250 0.25 0.250
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16 - 20 1 1/2 x 5/8-18 1.5 deep 5/8-18 UNF 7/16–20 UNF 7/16-20 unf
Shaft Rotation (From PTO Shaft Side) CCW CCW CCW CCW CCW
Gear Reduction - - No - -
PTO Height (in.)
6 1/8 - 6.125 6.125 6 1/8
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron liner Cast iron Cast iron liner Cast iron
Bore x Stroke (in.) 3 x 2.6 3 x 2.77 3 x 2.6 3.3 x 2.6 -
Compression Ratio
8.5 : 1 8.5:1 8.5:1 9:1 9:1
Cooling System
Air Air Air Air Air
Air Cleaner Type
Dual element Dual element Large capacity dual element Canister Heavy-duty canister
Fuel Type Gasoline Gasoline Gasoline Gasoline Gas
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
Large capacity Large capacity in-line Large capacity in-line 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 Oil Sentry Yes Yes
Low Oil Shutdown
Yes, wired not connected Yes Oil Sentry Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Manual Variable speed Variable speed Mechanical Mechanical
Carburetor
Smart choke Smart choke Smart Choke Smart choke Smart choke
Throttle Control
Engine mounted Remote control Engine-mounted Remote Remote
Choke Control
Engine mounted Smart choke carburetor Smart Choke Remote Remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 15 20 20 A regulated 20
Muffler Included
Yes Yes, w/guard No No Yes
Flywheel Brake - No - - -
Bolt Circle (in.)
5 5/8 x 7 3/4 7 7 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 1/4 x 3 1/2 7.250 x 3.504 7 1/4 x 3 1/2
Mounting Bolt Pattern L x W (in.) 7 1/4 x 3 1/2 - 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 x 19 14 x 17 3/4 x 19 14 x 17.7 x 19 14 x 17 x 26 1/2 14 x 17 3/4 x 26 1/2
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes