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Kohler Command Pro Horizontal Simplicity Replacement Engine with Electric Start — 624cc, 1.125in. x 2.79in. Shaft, Model# PA-CH640-3110
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Kohler Command Pro Horizontal Simplicity Replacement Engine with Electric Start — 624cc, 1.125in. x 2.79in. Shaft, Model# PA-CH640-3110

Item# 42557

Only $1949.99
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Factory Shipped —
Estimated Delivery: 7 - 12 Business Days
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Ships Truck 106.0 lbs
Unloading Requirements
Not Available in Stores

Manufacturer's Warranty: 3 Yr Consumer Limited

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Product Summary

Get relentless power and legendary performance from this Kohler Command Pro Horizontal Simplicity Replacement Engine with Electric Start. This engine has an overhead valve design for greater efficiency, improved power and reduced oil consumption. A variable-speed mechanical governor promises smooth performance. Its durable long life design incorporates oil-pressurized hydraulic valve lifters for a virtually maintenance-free valve train and full-pressure lubrication that continuously coats critical components, even at a 25° angle of operation. The large capacity in-line fuel filter provides extra protection against dirt particles.

What's Included

  •  (1) Engine, Model# PA-CH640-3110

Features + Benefits

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  • Excellent performance with high-performance spark plugs, 15 amp charging system, a large in-line fuel filter and OHV design
  • Reliable, long-life design with hardened crankshaft journals; a high-efficiency fan and screen; large dual-element air filter with foam pre-cleaner; iron cylinder liners; hydraulic valve lifters; full-pressure lubrication and a spin-on full-flow oil filter
  • Smooth operation thanks to an engineered material blower housing and a mechanical fuel pump
  • Easy, dependable starts thanks to the Smart Choke™ carburetor, the electronic ignition system and a solenoid shift starter
  • User-friendly maintenance with extended maintenance intervals, a yellow oil fill cap and dipstick handle, dual oil drains, an easy access oil-fill and dipstick

Key Specs

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Item#42557
Ship Weight106.0 lbs
Engine Displacement (cc)624
Start TypeElectric
ApplicationConveyor, two-wheeled tractor, bale chopper, utility vehicle, feeder
Engine TypeCommand Pro
Rated Power (HP)20
Torque (ft./lbs.)32.7 @ 2,400 RPM
Displacement (cu. in.)38
Shaft OutputHorizontal
CrankshaftHardened
Shaft Diameter (in.)1.125
Shaft Length (in.)2.79
Shaft Keyway (in.)0.25
Shaft End Tapped (Diameter (in.)/Threads per inch)1 1/2 deep 7/16-20
Shaft Rotation (From PTO Shaft Side)CCW
PTO Height (in.)6.125
Cylinders (qty.)2
Cylinder BoreCast iron
Bore x Stroke (in.)3 x 2.6
Compression Ratio8.5:1
Cooling SystemAir
Air Cleaner TypeLarge capacity in-line
Fuel TankNot included
Fuel TypeGasoline
Fuel PumpMechanical
Fuel FilterLarge capacity in-line
Oil Capacity (qt.)2
Lubrication SystemFull pressure
Low Oil AlertYes
Low Oil ShutdownOil Sentry
Ignition SystemElectronic
Governor SystemVariable speed
CarburetorSmart Choke
Throttle ControlRemote
Choke ControlRemote
Max. RPM3,600
Charging System Amps15
Muffler IncludedYes
Auto Compression ReleaseYes
Bolt Circle (in.)7-in. dia. pilot
Mounting Base L x W (in.)5.65, 7.75 PTO face with 7-in. dia. pilot
Mounting Bolt Pattern L x W (in.)5.65, 7.75 PTO face with 7-in. dia. pilot
Dimensions L x W x H (in.)14 x 18 x 19
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
Only $129.99
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Only $229.99
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Extended Warranty + Accidental Damage Repair Plan
Only $199.99
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Only $299.99
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Kohler Command Pro Horizontal Simplicity Replacement Engine with Electric Start — 624cc, 1.125in. x 2.79in. Shaft, Model# PA-CH640-3110 The price is $1,949.99.
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Estimated Delivery: 7 - 12 Business Days
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Hide Similarities
Engine Displacement (cc)
624 674 624 725 725
Start Type
Electric Electric Electric Electric Electric
Application Aerator, edger, dethatcher, sand trap rake, utility vehicle Utility vehicle, sand trap rake, grain auger, boring equipment Conveyor, two-wheeled tractor, bale chopper, utility vehicle, feeder Toro Exmark ZTR Stump grinders, construction equipment, grain augers
Engine Type Horizontal Gasoline Command Pro Air cooled Gasoline
Rated Power (HP) - - 20 - -
Torque (ft./lbs.)
32.2 at 2,200 32.2 @ 2,200 RPM 32.7 @ 2,400 RPM 42.3 at 2,400 40.9 @ 2,800 RPM
Displacement (cu. in.)
- - 38 725 725
Shaft Output
CCW Counterclockwise Horizontal CCW CCW
Crankshaft - Hardened Hardened Hardened Hardened
Shaft Diameter (in.) 1 1 1/8 1.125 1 1/8 1.437
Shaft Length (in.) 3 4 2.79 2 3/4 4.453
Shaft Keyway (in.)
0.375 1/4 0.25 0.25 0.375
Shaft End Tapped (Diameter (in.)/Threads per inch) 1 x 3/8-24 UNF 7/16–20 UNF 1 1/2 deep 7/16-20 7/16–20 UNF 5/8–18 UNF
Shaft Rotation (From PTO Shaft Side) CCW Counterclockwise CCW CCW CCW
Gear Reduction No - - - -
PTO Height (in.)
6.125 6 1/8 6.125 6.125 6.125
Bearing Type
- - - - Sleeve
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron sleeve Cast iron Cast iron liner Cast iron liner
Bore x Stroke (in.)
3 x 2.6 3 x 2.6 3 x 2.6 3.3 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 cooled Air Air Air
Air Cleaner Type
Dual element Dual element Large capacity in-line Canister Dual element
Fuel Tank - - Not included - -
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
Large capacity in-line Large capacity Large capacity in-line Yes Yes
Oil Capacity (qt.)
2 2 2 2 2
Lubrication System
Full-pressure lubrication w/full-flow filter Full pressure Full pressure Full pressure Full pressure
Low Oil Alert
Oil Sentry Yes Yes Yes Yes
Low Oil Shutdown
Oil Sentry Oil Sentry, shipped disconnected Oil Sentry Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Variable speed Variable speed Variable speed Mechanical Mechanical
Carburetor
Smart Choke Smart Choke Smart Choke Smart choke Smart choke
Throttle Control
Remote Engine mounted Remote Remote Engine mounted w/keyswitch
Choke Control
Smart Choke Smart Choke Remote Remote Engine mounted w/keyswitch
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 15 15 20 A regulated 20 A regulated
Muffler Included
No Yes Yes No Yes
Auto Compression Release Yes No Yes - -
Bolt Circle (in.)
5, 6 1/2, 7 3/4 5 5/8, 7 3/4, 7 pilot 7-in. dia. pilot 5.625 and 7.75, 7 in. pilot 5.625 and 7.75, 7 in. pilot
Mounting Base L x W (in.)
7 1/4 x 3 1/2 7 1/4 x 3 1/2 5.65, 7.75 PTO face with 7-in. dia. pilot 7.250 x 3.504 7.250 x 3.504
Mounting Bolt Pattern L x W (in.) 7 1/4 x 3 1/2 5 5/8, 7 3/4; 7 pilot 5.65, 7.75 PTO face with 7-in. dia. pilot - 7.250 x 3.504
Dimensions L x W x H (in.)
14 x 17.7 x 19 14 x 17 7/10 x 19 14 x 18 x 19 14 x 17 x 26 1/2 14 x 17 3/4 x 19
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes