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Kohler Command OHV Horizontal Engine with Electric Start — 674cc, 1in. x 3in. Shaft, Model# PA-CH620-3104

Item# 44600
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Kohler Command OHV Horizontal Engine with Electric Start — 674cc, 1in. x 3in. Shaft, Model# PA-CH620-3104

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Only $1249.99
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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
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Factory Shipped —
Estimated Delivery: 5 - 7 Business Days
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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.

What's Included
  •  (1) Engine

Features + Benefits

  • 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
  • Easy maintenance, thanks to easy-access oil fill cap and dipstick handle and dual oil drains
  • 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
Item# 44600
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, sand trap rake, utility vehicle
Engine Type Gasoline
Torque (ft./lbs.) 35 (47.5 Nm) at 3,600 RPM
Displacement (cu. in.) 41
Shaft Output Horizontal
Crankshaft Hardened
Shaft Diameter (in.) 1
Shaft Length (in.) 3
Shaft Keyway (in.) 3/8
Shaft End Tapped (Diameter (in.)/Threads per inch) 1 x 3/8-24 UNF
Shaft Rotation (From PTO Shaft Side) CCW
PTO Height (in.) 6 1/8
Bearing Type No
Cylinders (qty.) 2
Cylinder Bore Cast iron
Bore x Stroke (in.) 3 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 In line
Oil Capacity (qt.) 2
Lubrication System Full-pressure lubrication w/full-flow filter
Low Oil Alert Oil Sentry, shipped disconnected
Low Oil Shutdown Yes
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
Flywheel Brake No
Auto Compression Release No
Bolt Circle (in.) 5, 6 1/2, 7 3/4; 5 3/4 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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Product Question + Answer
Replacement Parts
Call To Order: 1-800-657-0516

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Sat 7:00 AM - 3:00 PM (Central)

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Kohler Command OHV Horizontal Engine with Electric Start — 674cc, 1in. x 3in. Shaft, Model# PA-CH620-3104 The price is $1,249.99.
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Hide Similarities
Engine Displacement (cc)
674 674 725 674 674
Start Type
Electric Electric Electric Electric Electric
Application Garden tractor, zero-turn mower, sand trap rake, utility vehicle Utility vehicle, sand trap rake, grain auger, boring equipment, carpet cleaning machines, pressure washers and furnace vacs Stump grinders, construction equipment, grain augers Simplicity garden tractor Grasshopper zero-turn mower
Engine Type Gasoline Gasoline Gasoline Gasoline Command Pro OHV
Torque (ft./lbs.)
35 (47.5 Nm) at 3,600 RPM 35 (47.5 Nm) at 3,600 RPM 38.4 (52.1 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM 35.7 (48.4 Nm) at 3,600 RPM
Displacement (cu. in.)
41 - 725 41 41
Shaft Output
Horizontal Counterclockwise CCW Horizontal Horizontal
Crankshaft Hardened Hardened Hardened Hardened Hardened
Shaft Diameter (in.) 1 1 1/8 1.437 1 1/8 1 1/8
Shaft Length (in.) 3 4 4.453 2.79 3 11/32
Shaft Keyway (in.)
3/8 1/4 0.375 1/4 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 1 x 3/8-24 UNF 7/16–20 UNF 5/8–18 UNF 1 1/2 deep x 7/16-20 UNF 17/16-20 UNF
Shaft Rotation (From PTO Shaft Side) CCW Counterclockwise CCW Counterclockwise Counterclockwise
PTO Height (in.)
6 1/8 6 1/8 6.125 6 1/8 6 1/8
Bearing Type
No Parent material Sleeve Parent material Parent material
Cylinders (qty.)
2 2 2 2 2
Cylinder Bore
Cast iron Cast iron sleeve Cast iron liner Cast iron sleeve Cast iron sleeve
Bore x Stroke (in.)
3 x 2.6 3 x 2.6 3.3 x 2.6 3 x 2.6 3 x 2.6
Compression Ratio
8.5:1 8.5:1 9:1 8.5:1 8.5:1
Cooling System
Air cooled Air cooled Air Air cooled Air cooled
Air Cleaner Type
Dual element Dual element Dual element Dual element Dual element
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Pump
Mechanical Mechanical Mechanical Mechanical Mechanical
Fuel Filter
In line Large capacity Yes Spin-on In line
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, shipped disconnected Yes Yes Yes Yes
Low Oil Shutdown
Yes Oil Sentry, shipped disconnected Yes Oil Sentry, shipped disconnected Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Variable speed Variable speed Mechanical Variable speed Mechanical
Carburetor
Smart Choke Smart Choke Smart choke Smart Choke Smart choke
Throttle Control
Remote Engine mounted Engine mounted w/keyswitch 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 15 15
Muffler Included
No No No No Yes
Flywheel Brake No - - - -
Auto Compression Release
No No - No No
Bolt Circle (in.)
5, 6 1/2, 7 3/4; 5 3/4 pilot 5 5/8, 7 3/4, 7 pilot 5.625 and 7.75, 7 in. pilot 5 5/8, 7 3/4; 7 pilot 5 5/8, 7 3/4, 7 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 1/2 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 7.250 x 3.504 7 1/4 x 3 1/2 7 1/4 x 3 1/2
Dimensions L x W x H (in.)
14 x 17 7/10 x 19 14 x 17 7/10 x 19 14 x 17 3/4 x 19 14 x 18 x 19 14 x 17 7/10 x 19
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes