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Kohler Command V-Twin OHV Horizontal Engine with Electric Start — 674cc, 1 1/8in. x 4in. Shaft, Model# PA-CH620-3103

Item# 44599
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Kohler Command V-Twin OHV Horizontal Engine with Electric Start — 674cc, 1 1/8in. x 4in. Shaft, Model# PA-CH620-3103

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Only $1249.99
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  • Hydraulic valve lifters are oil pressurized, ensuring that push rods stay in constant contact with the rocker arms
  • Valve train is virtually maintenance-free and never requires adjustment
  • Full-pressure lubrication delivers continuous lube to critical engine components, even at 25° angle of operation
  • Optional oil cooler regulates the oil temperature, extending oil-change intervals
  •  Large capacity, in-line fuel filter provides extra protection against dirt particles that can clog fuel lines
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Estimated Delivery: 5 - 7 Business Days
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Product Summary

Kohler Command V-Twin OHV Horizontal Engine with Electric Start has a durable, long life design that delivers high power performance. Its hydraulic valve lifters are oil pressurized, ensuring that push rods stay in constant contact with the rocker arms. The valve train is virtually maintenance-free and never requires adjustment. In addition, full-pressure lubrication delivers continuous lube to critical engine components, even at 25° angle of operation. The optional oil cooler regulates the oil temperature, extending oil-change intervals. The large capacity, in-line fuel filter provides extra protection against dirt particles that can clog fuel lines. Overhead valve technology provides greater volumetric efficiency and a higher compression ratio. This produces more power, improved fuel economy and cooling and reduces oil consumption. In addition, there is virtually no carbon buildup, reducing overall maintenance costs. The variable speed mechanical governor provides smooth performance, regardless of application or fluctuating demands for power. Kohler Command PRO® electronic ignition system generates a stronger spark at low cranking speed.

What's Included
  •  (1) Engine

Features + Benefits

  • Hydraulic valve lifters are oil pressurized, ensuring that push rods stay in constant contact with the rocker arms
  • Valve train is virtually maintenance-free and never requires adjustment
  • Full-pressure lubrication delivers continuous lube to critical engine components, even at 25° angle of operation
  • Optional oil cooler regulates the oil temperature, extending oil-change intervals
  •  Large capacity, in-line fuel filter provides extra protection against dirt particles that can clog fuel lines
  • Overhead valve technology provides greater volumetric efficiency and a higher compression ratio for more power, improved fuel economy and cooling while reducing oil consumption
  • Virtually no carbon buildup, reducing overall maintenance costs
  • Variable speed mechanical governor provides smooth performance, regardless of application or fluctuating demands for power
  • Kohler Command PRO® electronic ignition system generates a stronger spark at low cranking speed
Key Specs
Item# 44599
Brand Kohler Engines
Manufacturer's Warranty 3 Yr Consumer Limited
Ship Weight 106.0 lbs
Engine Displacement (cc) 674
Start Type Electric
Application Garden tractor, zero-turn mower, skid steer loader, bale chopper, utility vehicle
Engine Type Command V-Twin OHV
Torque (ft./lbs.) 35 (47.5 Nm) at 3,600 RPM
Displacement (cu. in.) 41
Shaft Output Horizontal
Crankshaft Hardened
Shaft Diameter (in.) 1 1/8
Shaft Length (in.) 4
Shaft Keyway (in.) 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 1.5-in. deep 7/16-20 UNF
Shaft Rotation (From PTO Shaft Side) Counterclockwise
PTO Height (in.) 6 1/8
Bearing Type Parent material
Cylinders (qty.) 2
Cylinder Bore Cast iron
Bore x Stroke (in.) 3.1 x 2.6
Compression Ratio 8.5:1
Cooling System Air cooled
Air Cleaner Type Dual element
Fuel Type Gasoline
Fuel Pump Mechanical
Fuel Filter Large capacity in-line
Oil Capacity (qt.) 2
Lubrication System Full pressure
Low Oil Alert Yes
Low Oil Shutdown Oil Sentry, shipped disconnected
Ignition System Electronic
Governor System Variable speed
Carburetor Smart Choke
Throttle Control Remote
Choke Control Remote
Max. RPM 3,600
Charging System Amps 15
Muffler Included No
Auto Compression Release No
Bolt Circle (in.) 5 5/8, 7 3/4, 7 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 7/10 x 19
EPA/CARB Approval (California Air Resource Board) Yes

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Mechanix Men's Wear Utility 1.5 Gloves - Black, Large, Model# H15-05-010
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Call To Order: 1-800-657-0516

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Hide Similarities
Engine Displacement (cc)
674 674 674 725 747
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 Utility, construction, grain augers and pressure washers Stump grinders, construction equipment, grain augers Garden tractors, construction equipment, etc.
Engine Type Command V-Twin OHV Gasoline Gasoline Gasoline Air
Torque (ft./lbs.)
35 (47.5 Nm) at 3,600 RPM 35 (47.5 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM 38.4 (52.1 Nm) at 3,600 RPM 41.2 (55.9 Nm) at 3,600 RPM
Displacement (cu. in.)
41 - 41.1 725 45 1/2
Shaft Output
Horizontal Counterclockwise Horizontal CCW CCW
Crankshaft Hardened Hardened Hardened Hardened Hardened
Shaft Diameter (in.) 1 1/8 1 1/8 1 7/16 1.437 1 7/16
Shaft Length (in.) 4 4 4 1/2 4.453 4 29/64
Shaft Keyway (in.)
1/4 1/4 0.0375 0.375 3/8
Shaft End Tapped (Diameter (in.)/Threads per inch) 1.5-in. deep 7/16-20 UNF 7/16–20 UNF 1.5 x 5/8-18 UNF 5/8–18 UNF 5/8–18 UNF
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise CCW CCW
PTO Height (in.)
6 1/8 6 1/8 6 1/8 6.125 6 1/8
Bearing Type
Parent material Parent material Parent material Sleeve PTO sleeve bearing
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron sleeve Cast iron sleeve Cast iron liner Cast iron
Bore x Stroke (in.)
3.1 x 2.6 3 x 2.6 3 x 2.77 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 cooled Air cooled Air Air Air
Air Cleaner Type
Dual element Dual element Dual element Dual element Dual element
Fuel Type Gasoline Gasoline Gasoline Gasoline Gas
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
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 Yes Yes Yes
Low Oil Shutdown
Oil Sentry, shipped disconnected Oil Sentry, shipped disconnected Oil Sentry, shipped disconnected 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 Engine control - key switch, throttle, choke control Engine mounted w/keyswitch Remote
Choke Control
Remote Smart Choke Smart Choke Engine mounted w/keyswitch Remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps 15 15 15 20A regulated 25
Muffler Included No No Yes No -
Auto Compression Release No No No - -
Bolt Circle (in.)
5 5/8, 7 3/4, 7 pilot 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
Mounting Base 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 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 5 5/8, 7 3/4; 7 pilot 7 1/4 x 3 1/2 7.250 x 3.504 -
Dimensions L x W x H (in.)
14 x 17 7/10 x 19 14 x 17 7/10 x 19 17 4/5 x 17 7/10 x 14 1/10 14 x 17 3/4 x 19 14 x 17.7 x 22.4
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes