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Kohler Command OHV Horizontal Engine with Electric Start — 624cc, 1.125in. x 4in. Shaft, Model# PA-CH640-3004
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Kohler Command OHV Horizontal Engine with Electric Start — 624cc, 1.125in. x 4in. Shaft, Model# PA-CH640-3004

Item# 28065

Only $1699.99
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Factory Shipped —
Estimated Delivery: 7 - 12 Business Days
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Ships Truck 106.0 lbs
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Manufacturer's Warranty: 2 years consumer use / 1 year commercial use

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Product Summary

This Kohler Command OHV Horizontal Engine with Electric Start gives you high power performance with overhead valve technology and a durable, long-life design with full-pressure lubrication. U.S.A.

What's Included

  •  (1) Engine

Features + Benefits

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  •  Hydraulic valve lifters are oil-pressurized, ensuring that push rods stay in constant contract with the rocker arms
  •  The valve train is virtually maintenance-free and requires no adjustment
  • Full-pressure lubrication delivers continuous lube to critical engine components, even at 25° angle of operation
  • Large capacity, in-line fuel filter provides extra protection against fuel line-clogging dirt particles
  •  Overhead valve technology provides greater volumetric efficiency and a higher compression ratio, providing more power, improved fuel economy, reduced oil consumption and better cooling
  • Virtually no carbon buildup for reduced maintenance costs
  •  The variable speed mechanical governor promises smooth performance, regardless of application or fluctuating demands for power
  •  The Kohler Command® electronic ignition system generates a stronger spark at lower cranking speeds and the Automatic Compression Release (ACR) system allows compression to escape during cranking to reduce pull force for reliable starts
  •  Easy maintenance, thanks to easy-access oil fill cap and dipstick handle and dual oil drains
  •  High power performance, with high-performance spark plugs, a 15 Amp regulated alternator and a large in-line fuel filter
  • Reliable, long-life design with hardened crankshaft journals, high-efficiency fan and screen, large dual-element air filter with foam pre-cleaner, cast iron cylinder liners and a spin-on, full-flow oil filter
  •  Quiet, smooth operation thanks to an engineered material blower housing and a mechanical fuel pump
  •  CARB and EPA-emission certified
  •  Smart-Choke® carburetor
  •  Electronic ignition system
  •  Solenoid shift starter

Key Specs

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Item#28065
Ship Weight106.0 lbs
Engine Displacement (cc)624
Start TypeElectric
ApplicationSand trap rake, garden tractor, lawn tractor, pump, utility vehicle
Engine TypeAir cooled
Torque (ft./lbs.)32.7 at 2,400
Shaft OutputCCW
CrankshaftHardened
Shaft Diameter (in.)1.125
Shaft Length (in.)4
Shaft Keyway (in.)0.250
Shaft End Tapped (Diameter (in.)/Threads per inch)1.5 deep 5/8-18 UNF
Shaft Rotation (From PTO Shaft Side)CCW
Gear ReductionNo
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 dual element
Fuel TypeGasoline
Fuel PumpMechanical
Fuel FilterLarge capacity in-line
Oil Capacity (qt.)2
Lubrication SystemFull pressure
Low Oil AlertOil Sentry
Low Oil ShutdownOil Sentry
Ignition SystemElectronic
Governor SystemVariable speed
CarburetorSmart Choke
Throttle ControlEngine-mounted
Choke ControlSmart Choke
Max. RPM3,600
Charging System Amps20
Muffler IncludedNo
Bolt Circle (in.)7
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 17.7 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:
2 years consumer use / 1 year commercial use

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

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Extended Warranty Repair Plan
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Extended Warranty + Accidental Damage Repair Plan
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Kohler Command OHV Horizontal Engine with Electric Start — 624cc, 1.125in. x 4in. Shaft, Model# PA-CH640-3004 The price is $1,699.99.
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Hide Similarities
Engine Displacement (cc)
624 624 624 725 747
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 Garden tractors, construction equipment, etc.
Engine Type Air cooled OHV Horizontal Air cooled Air cooled Air
Torque (ft./lbs.)
32.2 @ 2,200 RPM 32.7 at 2,400 rpm 32.7 at 2,400 42.3 at 2,400 45 at 2,400 RPM
Displacement (cu. in.)
39.1 624 - 725 45 1/2
Shaft Output
CCW CCW CCW CCW CCW
Crankshaft Hardened - Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1.437 1.125 1 1/8 1 7/16
Shaft Length (in.) 4 4.453 4 2 3/4 4 29/64
Shaft Keyway (in.)
3/8 0.375 0.250 0.25 3/8
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 5/8-18 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
Bearing Type
- - - - PTO sleeve bearing
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 3.3 x 2.7
Compression Ratio
8.5 : 1 8.5:1 8.5:1 9:1 9.4 : 1
Cooling System
Air Air Air Air Air
Air Cleaner Type
Dual element Dual element Large capacity dual element Canister Dual element
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 25
Muffler Included Yes Yes, w/guard No No -
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 3.504
Mounting Bolt Pattern L x W (in.) 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 17.7 x 22.4
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes